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Poster Session 2 - Student

Tue, 6/2: 10:00 AM - 11:00 AM CDT
Poster Sessions 
Ernest N. Morial New Orleans Convention Center 

Core Competencies

Chemical Hazards
Engineering Controls and Ventilation
Ergonomics
Radiation (Ionizing and Nonionizing)
Administrative Controls
Chemical Sampling and Instrumental Analysis
Biological Hazards
Biostatistics and Epidemiology
Chemical Hazards
Community Exposure
Engineering Controls and Ventilation
Ergonomics
Exposure Assessment
Hazard Communication
Health Regulations
IH/OH Program Management
Indoor Air Quality
Laboratory Quality Assurance/Quality Management
Personal Protective Equipment
Psychosocial hazards
Radiation (Ionizing and Nonionizing)
Risk Assessment
Risk Communication
Risk Management
Safety
Thermal Stressors
Total Worker Health ®
Toxicology / Human Disease
Work Environments, Occupations, and Industrial Processes

Session Availability

In-person

Specialized Tracks

Student and Early Career Professional Track

Targeted Audience

Practitioner
Professional
Technician

Presentations

1698 - 3D Printing Adsorptive Media: Carbon Activation Analysis

Many workers are exposed to environments containing harmful gasses such as volatile organic compounds (VOCs), increasing their risk of harmful health effects including asthma, kidney damage, and some cancers [1]. To protect against VOCs, respirator cartridges containing adsorptive media, such as activated carbon (AC) in granular form, are often used. While the granular activated carbon has the necessary characteristics for VOC adsorption such as a high surface area and microporosity, because of friction the granules can degrade overtime lowering its performance. Developing activated carbon materials manufactured via stereolithographic (SLA) 3D printing could help improve upon the current granular activated carbons by mitigating internal friction through complex stationary structures. The present work sought to improve upon activated carbon manufacturing techniques through the development of precursor photo resins compatible with SLA 3D printing to produce materials with favorable adsorptive properties for VOC capture. 

Co-Authors

E. Schultz, University of Alabama at Birmingham, Birmingham, Alabama, USA
K. Lu, University of Alabama at Birmingham, Birmingham, Alabama, USA
J. Oh, University of Alabama at Birmingham, Birmingham, Alabama, USA
C. Lungu, University of Alabama at Birmingham, Birmingham, Alabama, USA
 

Acknowledgements & References

Acknowledgements
This study was supported by The Deep South Center for Occupational Health and Safety (Grant #5T42OH008436-20 from NIOSH). Its contents are solely the responsibility of the authors and do not necessarily represent the official views of NIOSH.

References
[1] EPA. (2024, August 13). Volatile organic compounds’ impact on indoor air quality. United States Environmental Protection Agency. https://www.epa.gov/indoor-air-quality-iaq/volatile-organic-compounds-impact-indoor-air-quality#Health_Effects
[2] Steldinger, H. (2020). 3D printing of activated carbon and exemplary application as adsorbent in the electric swing adsorption (dissertation).
[3] FormLabs. (2025). Guide to stereolithography (SLA) 3D printing. https://formlabs.com/blog/ultimate-guide-to-stereolithography-sla-3d-printing/?srsltid=AfmBOoqqYW-wiXRKprH9i5x3tK6njsZaVHvyCVguwxNKc500axALYmJq

 

Poster Presenter

Maya Van Houten-Armstrong, University of Alabama at Birmingham Birmingham, AL 
USA

1678 - A Method to Determine Crystalline Silica Content of Bulk Dust by Polarized Light Microscopy.

Developing a microscopic method to quantify crystalline silica content in bulk dust samples and compare results to standard analytical methods. 

Co-Authors

T. Peters, University of Iowa, Iowa City, IA, USA 

Acknowledgements & References

J. Pan, University of Iowa, Iowa City, IA, USA (Thesis committee member)
P. O'Shaughnessy, University of Iowa, Iowa City, IA, USA (Thesis committee member, also provided advice on data and sample analysis)
T. Anthony, University of Iowa, Iowa City, IA, USA (Provided general advice on design, figures, writing) 

Poster Presenter

Matthew Saylor, University of Iowa Bedford, KY 
USA

1687 - A Systematic Review and Meta-analysis of Pesticide Exposure and Alzheimer’s Disease Risk

This updated meta-analysis evaluates the relationship between pesticide exposure and risk of Alzheimer's disease (AD) by incorporating recent literature and assessing study heterogeneity and potential moderators. This study supports a statistically significant association between pesticide exposure and AD, particularly for organochlorines and agriculture settings. 

Co-Authors

S. Khuder, University of Toledo, Toledo, Ohio, USA
 

Acknowledgements & References

A. Ames, University of Toledo, Toledo, Ohio, USA 

Poster Presenter

Shakira Azeez Salami, BPharm, University of Toledo Toledo, OH 
United States of America

1709 - Air Quality Monitoring of Fine Particulate Matter and Lead to Assess Occupational Health Near Aviation Operations

Aircrafts that use piston engines continue to rely on leaded aviation gasoline. Emissions from these aircrafts release particulate lead and other combustion byproducts into the surrounding air environment. Evaluation of particulate pollution near airports is important for industrial hygiene practice because airport personnel may experience repeated exposure during routine aircraft operations and fueling activities. Characterization of airborne contaminants near runways supports occupational exposure assessment and workplace health protection. This study investigates airborne fine particulate matter (PM2.5; ≤ 2.5 µm) and lead concentrations near a general aviation airport to assess potential occupational and environmental exposure related to aviation gasoline emissions. 

Co-Authors

Jacob S. Penrod, Jae Hong Park, Aaron J. Specht, Ellen M. Wells 

Acknowledgements & References

J. Malone, Purdue University, West Lafayette, IN, USA.
M. Klein, Purdue University, West Lafayette, IN, USA.
S. Han, Purdue University, West Lafayette, IN, USA.
N. Shin, Purdue University, West Lafayette, IN, USA.
N. Kataria, Purdue University, West Lafayette, IN, USA.
K. Wolfe, Purdue University Airport, West Lafayette, IN, USA. 

Poster Presenter

Ashley Hannah, Purdue University Lafayette, IN 
USA

1663 - Air sampler utilizing a wet inertial impactor to directly convert aerosols into hydrosols for exposure assessment of welding fumes

In the United States, about 457,300 workers are employed in hot metal working occupations such as welding and brazing. These processes generate aerosols that pose significant occupational health risks and often contain metals such as iron (Fe), aluminum (Al), and manganese (Mn). Exposure to these metals can cause respiratory disease, neurological effects, and increased cardiovascular risks. An accurate exposure assessment is essential for this large and growing workforce. Conventional exposure assessment relies on filter-based sampling followed by digestion before metal analysis, which increases preparation time and can introduce variability. This study presents a novel sampler that collects aerosols directly into water and simplifies metal exposure assessment. 

Co-Authors

Chang Geun Lee, Purdue University, West Lafayette, IN, USA 

Acknowledgements & References

This work was supported by the National Science Foundation (NSF) under Grant No. 2127756, the National Institute for Occupational Safety and Health (NIOSH) through the Pilot Research Project Training Program of the University of Cincinnati Education and Research Center (T42 OH008432), and the Pilot Project Research Training Program of the University of Michigan Education and Research Center (T42 OH008455). 

Poster Presenter

Subin Han, Purdue University West Lafayette, IN 
USA

1646 - Arctic Dry Decontamination for Litter Bound Radiological Casualties

Medical and decontamination response options to radiological contamination in extreme cold environments are constrained by the impracticality of water-based decontamination. This study evaluates dry, air-based decontamination methods for litter-bound patients, focusing on reducing airborne exposure during patient disrobing. Findings provide practical guidance for protecting medical responders during arctic and austere operations 

Co-Authors

J. Slagley, AFIT/ENV, Dayton Ohio, USA
J. Skipper, AFIT/ENV, Dayton Ohio, USA
C. Dugan, AFIT/ENV, Dayton Ohio, USA
T. White, AFIT/ENV, Dayton Ohio, USA 

Acknowledgements & References

This work was completed through the support of the U.S. Air Force Research Laboratory’s 711th Human Performance Wing Force Health Protection Branch under project # AFIT 2024-116R2. Wright Patterson AFB, Ohio.

Disclaimer: The views expressed in this poster are those of the authors and do not reflect the official policy or position of the United States Air Force, Department of Defense, or the United States Government. This material is declared a work of the U.S. Government and is not subject to copyright protection in the Unites States. 

Poster Presenter

Andrew Sumner, USMC Dayton, OH 

1692 - Assessing Tetrachloroethylene Exposure via Exhaled Breath Analysis: Superfund vs Non-Contaminated Communities

Description:
Tetrachloroethylene (PCE) is a toxic solvent used in dry cleaning and metal degreasing. Martinsville, Indiana overlies four contaminated groundwater sites, where PCE is detected in soil and water, creating vapor-intrusion risks and potential inhalation exposure. Our previous study detected elevated level of PCE in residents' exhaled breath; however, there was no statistically significant difference in levels between households near the waste site and those in more distant areas .This underscores the need for comparison with a non-contaminated community. 

Co-Authors

Marwan Alajlouni1, Sara Saad1, Alex Gronkiewicz1, Bethaney Latham2, Stephanie Littell2, Eve Pinsker3,Mary Turyk3 and Sa Liu1

1School of Health Sciences, Purdue University, West Lafayette, IN, USA
2Martinsville Environmental Community Action Project, Martinsville, IN, USA
3School of Public Health, University of Illinois Chicago, Chicago, IL, USA
 

Acknowledgements & References

none 

Poster Presenter

Sanzida Amin, Purdue University West-Lafayette, IN 
United States of America

1710 - Assessing Welding Fume Exposure and its Impact on Motor Function

Welders are exposed to metal-containing aerosols with manganese (Mn) linked to motor function deficits, such as Parkinsonism. We developed refined short-term and long-term cumulative exposure indices (CEIs) using personal air sampling during a work shift and a work history questionnaire. In this study, we examine how this exposure metrics affect measurable motor impairments and provide new insights into Mn effects on the nervous system while advancing methods to assess risk in occupational settings. 

Co-Authors

C.G. Lee, Purdue University, West Lafayette, IN, USA
K. B. Knight, Purdue University, West Lafayette, IN, USA
Jae Hong Park, Purdue University, West Lafayette, IN, USA
Ulrike Dydak, Purdue University, West Lafayette, IN, USA 

Acknowledgements & References

This work was supported by the National Institutes of Health (NIH)/National Institute of Environmental Health Sciences (NIEHS) Grant (R01 ES032478) and the International Manganese Institute. Additional funding was provided by the National Institute for Occupational Safety and Health (NIOSH) Grants (T42 OH008432 and T42 OH008455).  

Poster Presenter

Nara Shin, Purdue University West Lafayette, IN 
USA

1660 - Assessment of Occupational and Community Exposure to Methyl Bromide

Occupational and environmental exposures to methyl bromide (MeBr) pose significant human health risks, necessitating effective monitoring and communication of potential exposure to this fumigant for the worker and residential communities most impacted by its application. 

Co-Authors

Y. Ornelas Van Horne, University of California Los Angeles Fielding School of Public Health, Los Angeles, CA, USA 

Acknowledgements & References

none 

Poster Presenter

Jazmine Gallardo, University of California, Los Angeles West Covina, CA 
USA

1695 - Characterizing Community Exposure to Tetrachloroethylene (PCE) Near Contaminated Sites Using Exhaled Breath Analysis

Description
Tetrachloroethylene (PCE) is a prevalent environmental contaminant and probable human carcinogen and neurotoxicant, with health effects mainly observed among occupational groups with high exposure levels. It contaminates groundwater, soil, and indoor air, causing exposure in community settings. Martinsville, Indiana, is a midwestern working-class community overlying four PCE‑contaminated groundwater and soil sites. Six field sampling campaigns were conducted in 2024-2025, with the last one completed in November 2025. 

Co-Authors

Sanzida Amin1, Sara Saad1, Alex Gronkiewicz1, Bethaney Latham2, Stephanie Littell2, Prathiba Balakumar3, Mariam Oladosu3, Eve Pinsker3,
Mary Turyk3 and Sa Liu1

1School of Health Sciences, Purdue University, West Lafayette, IN, USA
2Martinsville Environmental Community Action Project, Martinsville, IN, USA
3School of Public Health, University of Illinois Chicago, Chicago, IL, USA
 

Acknowledgements & References

none 

Poster Presenter

Marwan Alajlouni, PharmD, MPH, Purdue University West Lafayette, IN 

1664 - Characterizing occupational exposures during cannabis production

Workers are potentially exposed to respiratory irritants and allergic sensitizers during cannabis processing tasks. Recent evidence suggests an elevated burden of respiratory and allergic health symptoms in cannabis production workers, underscoring the need to characterize and control occupational exposures. We measured inhalable particulate matter (PM), endotoxin, ß-glucan, and volatile organic compound (VOC) terpenes during processing activities at seven cannabis production facilities in Washington state. Exposure levels varied by work task, with higher VOC and PM concentrations typically observed during trimming and bucking. Our findings may inform exposure control strategies to protect cannabis workers from work-related respiratory hazards. 

Co-Authors

C Sack, University of Washington, Seattle, WA, USA
CD Simpson, University of Washington, Seattle, WA, USA 

Acknowledgements & References

K. Jansen, University of Washington, Seattle, WA, USA – field team
M. Paulsen, University of Washington, Seattle, WA, USA – field team
A. Gilbert, University of Washington, Seattle, WA, USA – field team
C. Beatson, University of Washington, Seattle, WA, USA – field team
J. Moreno, University of Washington, Seattle, WA, USA – field team
Y. Rodriguez, University of Washington, Seattle, WA, USA – field team 

Poster Presenter

Callan Krevanko, University of Washington Environmental & Occupational Health Vancouver, WA 
United States of America

1666 - Comparing PIXE and XRF Analysis of Pb in Road Dust

Particle-Induced X-Ray Emission (PIXE) spectroscopy and X-Ray Fluorescence (XRF) are non-destructive methods to quantify elemental concentrations in a sample. A total of 382 road dust samples from northern Lake County (NLC), Indiana, USA were analyzed for lead (Pb) with PIXE at the University of Notre Dame, before being sent to Purdue University for XRF analysis. We completed a comparison of results obtained by these two analytical methods. This research will help us to understand how different non-destructive analytical methods work in dust and soils analyses. 

Co-Authors

E. Belzer, University of Notre Dame, Notre Dame, IN, USA
T. Grier, Purdue University, West Lafayette, IN, USA
A. Specht, Purdue University, West Lafayette, IN, USA
G. Peaslee, University of Notre Dame, Notre Dame, IN, USA
E. Wells, Purdue University, West Lafayette, IN, USA 

Acknowledgements & References

The authors acknowledge Kimmie Gordon, Suzanne Chick, Susan Duncan, David Dabertin, Grace TaFolla, Tim DaSilva, Lisa Vallee and Juan Andrade for their service on the Northern Lake County Environmental Partnership (NLCEP) Community Advisory Board. The authors acknowledge Sayam Abu Sayed, Marc Soliman, Abigail Troutt, and Jason Collins, Leah Zimmer and Dr. Gunnar Brown for sample analysis. 

Poster Presenter

Jacob Malone, Purdue University Prophetstown, IL 
USA

1703 - Contributions from Broiler Chicken Farms to Worker Ammonia Exposure

Concentrated Animal Feeding Operations (CAFOs) are the number one source of ammonia emissions in the Southeastern U.S. Inadequate estimates of emissions from various types of CAFOs leads to underestimates of worker and community exposures. In this study, the role of litter pile contributions to total emissions from broiler chicken farms was assessed. Using a modelling approach, this study assessed the relative contributions of litter pile emissions to resulting ammonia concentrations in Robeson County, NC. These missing emissions from national estimates were found to contribute significantly to resulting concentrations, increasing frequency of worker exposure to concentrations above short-term limits. 

Co-Authors

none 

Acknowledgements & References

W. Vizuete, UNC Chapel Hill, Chapel Hill, NC, USA.  

Poster Presenter

Avery Matthews, University of North Carolina at Chapel Hill Chapel Hill, NC 

1686 - Culturally Responsive Exposure Report-Back: Improving Risk Communication

Clear and effective communication is the vital link between industrial hygienists' expertise and the protection of health. Exposure data can guide people's daily behaviors and motivate health-protective actions, but it is valuable only when presented in an accessible and appropriate manner. Many current report-back approaches are not culturally informed or audience-centered, creating a critical gap. This study aimed to develop culturally informed report-back strategies regarding environmental exposure for rural Native American participants. This was accomplished through listening sessions, questionnaires, and focus groups with community members to evaluate prior report-back methods for indoor particulate matter (PM) and radon and to refine report-back strategies across key areas. By actively engaging the community and incorporating cultural perspectives, the goal was to create a report-back strategy that effectively communicates exposure information and promotes enduring changes in behavior, environment, and health outcomes. 

Co-Authors

D. Sleeth, University of Utah, Salt Lake City, UT, USA
T. Benny, University of Utah, Salt Lake City, UT, USA
S. Collingwood, University of Utah, Salt Lake City, UT, USA
J. Giese, University of Utah, Salt Lake City, UT, USA
T. Rock, Northern Arizona University, Flagstaff, AZ, USA
M. Crookston, University of Utah, Salt Lake City, UT, USA
S. Babits, Northern Arapaho Natural Resource Office, Arapaho, WY, USA
D. Goggles, Northern Arapaho Natural Resource Office, Arapaho, WY, USA
T. Denego, Northern Arapaho Natural Resource Office, Arapaho, WY, USA 

Acknowledgements & References

None 

Poster Presenter

Selah Willis, University of Utah Salt Lake City, UT 

1716 - Development of a WISHA10 Cannabis Training Module

WISHA10 is a 10-hour health and safety training program developed for agricultural workers by Washington State's department of Labor and Industries. From the WISHA10 training, the WISHA10 Cannabis training is the first standardized, evidence-based health and safety training designed specifically for Washington's cannabis industry. This poster shares the development process, evaluation findings, and speaks to industry-specific hazards. Attendees will learn how tailored training can improve health and safety outcomes for a unique workforce. 

Co-Authors

C. Simpson, University of Washington, Seattle, WA, USA
B. Farrar, Labor and Industries, Seattle, WA, USA
E. Kasner, University of Washington, Seattle, WA, USA
S. Fish, University of Washington, Seattle, WA, USA
D. Drury, University of Washington, Seattle, WA, USA
M. Tchong-French, University of Washington, Seattle, WA, USA
D. Ceballos, University of Washington, Seattle, WA, USA
 

Acknowledgements & References

Scott Haggberg, GrowOp Farms, Spokane, Washington, USA
Jerry Whiting, LeBlanc CNE, Seattle, Washington, USA
June Spector, University of Washington, Seattle, Washington, USA
Matthew Clark, Think Happy Consulting, USA
Carolyn Whitaker, Labor and Industries, Seattle, WA, USA

Research reported in this poster was supported by the National Institute for Occupational Safety and Health (NIOSH) under Federal Training Grant T42OH008433 and by the Pacific Northwest Agricultural Safety and Health center (PNASH) as a pilot project under grant number U54OH007544A. The content is solely the responsibility of the authors and does not necessarily represent the official views of NIOSH
 

Poster Presenter

Juliana Moreno, University of Washington Sammamish, WA 

1690 - Does Staffing Protect School Workers from Student Violence? A Mixed-Methods Analysis of SB 553 Implementation in California Schools

In 2024, California's Senate Bill 553 (SB 553) transformed workplace violence (WPV) prevention from a healthcare-specific concern into a universal mandate for all general industries. However, the education sector faces a unique and sensitive challenge: How do employers protect staff when the instigators of violence are the students themselves? 

Co-Authors

none 

Acknowledgements & References

S. Costello, UC Berkeley School of Public Health, Berkeley, CA, USA. Role: Provided guidance on occupational epidemiology and the use of large administrative datasets to answer causal research questions.

S. Teran, Labor Occupational Health Program (LOHP), Berkeley, CA, USA. Role: Offered expertise on participatory research and strategies for protecting vulnerable worker populations, specifically within the context of California labor policy.

S. Darling-Hammond, UC Berkeley School of Public Health, Berkeley, CA, USA. Role: Supported research design and analysis regarding K-12 school practices, disciplinary data, and their impacts on health equity and safety.

M. Hosein, Labor Occupational Health Program (LOHP), Berkeley, CA, USA. Role: Provided support in mixed-methods research design and the evaluation of school-based safety and health programs (SASH).

L. Li, UC Berkeley School of Public Health, Berkeley, CA, USA. Role: Provided high-level statistical consultation regarding the Linear Mixed-Effects Modeling and complex data analysis performed in R. 

Poster Presenter

Ashley Kochans, UC Berkeley School of Public Health Malibu, CA 
USA

1645 - Evaluating Dry Air-Driven, Ambulatory Patient Personal Decontamination of Polystyrene Latex Spheres as a Biological Agent Surrogate in Extreme Cold Environments to Reduce Airborne Risks Using a Manikin

This research investigated air-driven decontamination strategies aimed at reducing biological contamination and limiting the reaerosolization of particles during clothing removal, specifically in support of ambulatory care in arctic or subzero environments. A life-sized manikin representing a fully mobile Airman was outfitted in standard-issue extreme cold weather gear (parka and pants) and contaminated with 1 μm polystyrene latex (PSL) spheres to simulate anthrax spore exposure. The manikin was then subjected to one of three dry decontamination methods: high-efficiency particulate air (HEPA) vacuuming, a mobile air shower by HalenHardy (MASHH), or no treatment (control).
After contamination, the uniform was removed, and Institute of Occupational Medicine (IOM) inhalable air samplers were positioned at two heights in front of the manikin to capture airborne particles and estimate potential inhalation exposure risks to patients and first responders during the disrobing process. The PSL spheres produced a measurable ultraviolet (UV) fluorescence signal, which allowed airborne particle concentrations to be quantified using UV fluorescence microscopy, employing both manual counting and computer-assisted image analysis. Each decontamination method was tested in ten independent trials, for a total of 30 experiments. Statistical analyses using one-way ANOVA (α = 0.05), followed by Tukey's Honestly Significant Difference (HSD) and the non-parametric Steel–Dwass test, indicated significant differences (p < 0.0001) between the methods and control groups.
On average, HEPA vacuuming reduced airborne PSL concentrations by 98.5%, whereas the mobile air shower achieved a slightly higher reduction of 99.5%. The mobile air shower also exhibited lower variability and a rapid, one-minute cycle time compared to the vacuum procedure, making it highly effective and practical for extreme cold environments. These findings highlight the potential for mobile air shower systems for enhanced personal decontamination that reduce risks to responders and patients during resource-constrained and unique mission operations. 

Co-Authors

J. Slagley, AFIT, WPAFB, OH, USA,
D. Lewis, AFIT, WPAFB, OH, USA,
J. Skipper, AFIT, WPAFB, OH, USA, 

Acknowledgements & References

711 Human Performance Wing: This work was completed through the support of the U.S. Air Force Research Laboratory’s 711th Human Performance Wing Force Health Protection Branch under project # AFIT 2024-116R2.

Disclaimer: The views expressed in this poster are those of the authors and do not reflect the official policy or position of the United States Air Force, Department of Defense, or the United States Government. This material is declared a work of the U.S. Government and is not subject to copyright protection in the Unites States. 

Poster Presenter

Trenton Shimata, Air Force Institute of Technology Wpafb, OH 

1676 - Evaluating LLM Accuracy at Answering Quantitative Occupational Hygiene Questions

How effectively do different large language models respond to occupational hygiene queries? This research looked at three commonly used models - OpenAI's ChatGPT, Anthropic's Claude, and Google's Gemini - to assess accuracy and compare model performance when tasked with open-ended quantitative questions. Variations in prompts were applied when engaging the models to determine the impact of prompt engineering. Test methodology included a comparison between model engagement with standalone queries versus multi-turn conversations to provide insights on model effectiveness based on user tendencies. 

Co-Authors

P. Raynor, University of Minnesota, Minneapolis, MN, USA. 

Acknowledgements & References

none 

Poster Presenter

Anna Lee, University of Minnesota Minneapolis, MN 

1670 - Examining Toxicity of Urban Wildfire Ash In Vitro

The surge of urban wildfires across Los Angeles County in early January 2025 released hazardous air pollutants and ash, raising environmental concerns and potential health risks associated with toxic particulate inhalation among workers in post-wildfire settings. To test the cytotoxicity of nanoparticles in wildfire ash, we designed an in vitro model to examine the inflammatory responses and cell death of human bronchial epithelial cells. 

Co-Authors

E. Landskroner, UCLA, Los Angeles, CA, USA
C. Tsai, UCLA, Los Angeles, CA, USA
S. Nagaraj, UCLA, Los Angeles, CA, USA 

Acknowledgements & References

S. Baldwin, UCLA, Los Angeles, CA, USA
1 Chen, Y. H., Nguyen, D., Brindley, S., Ma, T., Xia, T., Brune, J., Brown, J. M. & Tsai, C. S. J. (2023). The dependence of particle size on cell toxicity for modern mining dust. Scientific Reports, 13(1), 5101.
2 Landskroner, E. A., & Tsai, C. S. (2025). Impact of ethanol as a vehicle for water-insoluble pollutants in BEAS-2B cell toxicity assays. Toxicology mechanisms and methods, 35(9), 1437–1449. https://doi.org/10.1080/15376516.2025.2540457
3 Panico, S. C., Santorufo, L., Memoli, V., Esposito, F., Santini, G., Di Natale, G., Trifuoggi, M., Barile, R., & Maisto, G. (2023). Evaluation of Soil Heavy Metal Contamination and Potential Human Health Risk inside Forests, Wildfire Forests and Urban Areas. Environments, 10(8), 146. https://doi.org/10.3390/environments10080146 

Poster Presenter

Hana Almony, University of California, Los Angeles Sherman Oaks, CA 
USA

1713 - Experimental Determination of Minimum Transport Velocity for Sand in a Local Exhaust Ventilation (LEV) System Using Borescope Observation

Minimum transport velocity is a critical parameter in the design of local exhaust ventilation (LEV) systems because it ensures that particulate contaminants remain suspended and are conveyed through ductwork without settling. Recommended transport velocities provided in Industrial Ventilation: A Manual of Recommended Practice for Design are commonly used in ventilation design; however, these values typically incorporate safety factors to account for complex operating conditions found in industrial systems. 

Co-Authors

A. Soto, UPR RCM, Salinas, PR
A. Morales, UPR RCM, Toa Alta, PR
A. Capestany, UPR RCM, Toa Baja, PR
C. Gonzalez, UPR RCM, Quebradillas, PR
E. Perez, UPR RCM, Moca, PR
E. Santiago, UPR RCM, Yauco, PR
K. Cuevas, UPR RCM, Fajardo, PR
K. Hernandez, UPR RCM, Barceloneta, PR
M. Irizarry, UPR RCM, Ponce, PR
S. Caporali, UPR RCM, Fajardo, PR
Y. Almestica, UPR RCM, Guayanilla, PR 

Acknowledgements & References

None 

Poster Presenter

Amanda Capestany Rivera, University of Puerto Rico Toa Baja, PR 
United States of America

1673 - Extended Reality (XR) in OHS Training: Assessment of Aviation Worker Outcomes

This work investigates the association between focus displayed during training and self-reported occupational health and safety motivation. Our work hypothesizes that participants displaying high levels of intrinsic occupational health and safety motivation (i.e., they demonstrate interest and enjoyment in safety) will have higher levels of focus displayed during health and safety training sessions. Focus during training is assessed using eye-tracking glasses, which are worn by participants during training. 

Co-Authors

Y. Nazarenko, University of Cincinnati, Cincinnati, OH, USA 

Acknowledgements & References

none 

Poster Presenter

Hannah Frame, University of Cincinnati Liberty Twp, OH 
USA

1662 - Hard-to-Reach, Not Hard-to-Protect: Preliminary Results from a Scoping Review of Effective Safety Messaging for Im/migrant Workforces

Nearly 20% of the U.S. workforce is foreign-born, with a disproportionate number employed in high-risk industries with frequent occupational exposures. Traditional health and safety communication strategies may not effectively reach or resonate with im/migrant worker communities. This scoping review identifies which communication channels and messaging approaches most effectively convey workplace exposure information to this underserved and hard-to-reach worker population. Preliminary findings suggest participatory, culturally tailored, and peer-led strategies outperform passive materials, particularly in agriculture, construction, and day labor sectors. Key barriers include language, trust, and legal vulnerability. These findings provide practical insights for occupational and environmental health and safety professionals seeking to improve risk communication and advance workplace health equity. 

Co-Authors

R. L. Thompson, CUNY Graduate School of Public Health and Health Policy, New York, NY, USA

R. Piltch-Loeb, CUNY Graduate School of Public Health and Health Policy, New York, NY, USA

B. Pavilonis, CUNY Graduate School of Public Health and Health Policy, New York, NY, USA 

Acknowledgements & References

We consulted our institution’s librarian (R. Farrell, CUNY Graduate School of Public Health and Health Policy, New York, NY, USA) to assist with building our search strings based on the research question, sub-questions, and Population-Concept-Context Question outline. Funding was provided by the NYC Preparedness & Recovery Institute.

References:
BLS. (2025). Foreign-Born Workers: Labor Force Characteristics—2024 (No. USDL-25-0847). U.S. Department of Labor, Bureau of Labor Statistics.
Castillo, J. (2023, October). Fatal Injuries to Foreign-Born Hispanic or Latino Workers: Spotlight on Statistics: U.S. Bureau of Labor Statistics. Bureau of Labor Statistics. https://www.bls.gov/spotlight/2023/workplace-fatalities-among-foreign-born-hispanic-workers/home.htm
Gany, F., Novo, P., Dobslaw, R., & Leng, J. (2014). Urban occupational health in the Mexican and Latino/Latina immigrant population: A literature review. Journal of Immigrant and Minority Health, 16(5), 846–855. https://doi.org/10.1007/s10903-013-9806-8
Orrenius, P. M., & Zavodny, M. (2009). Do Immigrants Work In Riskier Jobs? Demography, 46(3), 535–551. https://doi.org/10.1353/dem.0.0064
Zuehlke, E. (2009, October 30). Immigrants Work in Riskier and More Dangerous Jobs in the United States. PRB. https://www.prb.org/resources/immigrants-work-in-riskier-and-more-dangerous-jobs-in-the-united-states/ 

Poster Presenter

Mike Ierardi, CIH, CSP, CUNY Graduate School of Public Health & Health Policy New York, NY 

1714 - Heat Exposure to Student Pilots During Flight Training

Aircrafts that are used for student pilots are typically smaller in size and are often not equipped with air conditioning. During the flight, the cabin or cockpit temperatures may rise to levels that may be uncomfortable during the flight. Prolonged exposure to elevated temperatures may contribute to fatigue or discomfort. This study investigates the relationship between the cabin temperature and outdoor environment conditions during flight training. 

Co-Authors

J Keller, PhD, Purdue University, West Lafayette, IN, USA; D Henneberry, EdD Purdue University, West Lafayette, IN, USA; Mark Wilson, DC, PhD, Purdue University, West Lafayette, IN, USA 

Acknowledgements & References

none 

Poster Presenter

Ria Sharma, Purdue University Michigan City, IN 
USA

1669 - Hydrogen Sulfide Concentrations in Mushroom Farm Operations

Chester County, Pennsylvania is home to the largest region of mushroom farming in the United States which is credited with producing more than half of all fresh mushrooms in the US annually. Mushrooms are grown on a substrate made of fermented ingredients including animal manure. The bacterial decomposition of the growth substrate releases hydrogen sulfide (H2S), a toxic gas that can be lethal at concentrations above 100 ppm. The environmental sampling conducted by our research group found elevated and irregular H2S concentrations occurring on residential properties located near mushroom production facilities. In several instances, these readings were found in exceedance of Pennsylvania's ambient air quality standards. Concentrations are elevated enough to cause recognizable health symptoms in exposed groups and corrosion of outdoor metals and electrical equipment. The elevated exposure levels are a concern for the workers and the general public. 

Co-Authors

L. Gaston, West Chester University, Philadelphia, PA, West Chester University of PA, West Chester, PA, USA
D. Engelbrecht, West Chester University, Philadelphia, PA, West Chester University of PA, West Chester, PA, USA
D. Farcas, Hydro-Environmental Technologies, Inc., Acton, MA, USA
L. Cena, West Chester University, Philadelphia, PA, West Chester University of PA, West Chester, PA, USA 

Acknowledgements & References

none 

Poster Presenter

Tristan Washington, West Chester University West Chester, PA 
United States of America

1441 - Impact of Puncture and Stretch on Punctured Glove Barrier Performance.

The integrity of protective gloves is crucial for preventing exposure to biological fluids and hazardous chemicals in occupational settings. Glove materials such as natural rubber latex, synthetic nitrile, and vinyl are selected based on their distinct chemical and physical properties imparted during their manufacturing processes. For example, the unique elasticity of latex is a result of a vulcanization process that cross-links its polymer chains, while nitrile's strength and chemical resistance make it a popular synthetic alternative. While standard test methods, such as those from ASTM International, exist for evaluating barrier performance, they often do not fully replicate the physical stressors like puncture and stretching that gloves undergo during real-world use. This study builds on previous research (Soo et al., 2024) that developed a novel experimental technique using a domed screen to test the effect of biaxial stretching on glove barrier performance, finding that this stress can reduce glove thickness by 16% to 44% and provided a qualitative assessment (pass/fail) analysis of barrier performance that was limited by the detection sensitivity of the fluorescent challenge. The objective was to provide a more comprehensive, quantitative assessment of barrier performance of disposable medical gloves under both unpunctured and punctured conditions using a highly sensitive fluorometric technique to quantify any change in barrier integrity, including chemical penetration. 

Co-Authors

K. Jorgensen, Georgia Southern University, Statesboro, GA, USA.
R. Perez, Georgia Southern University, Statesboro, GA, USA
J. Soo, Georgia Southern University, Statesboro, GA, USA 

Acknowledgements & References

K. Jorgensen, Georgia Southern University, Statesboro, GA, USA: Responsible for conducting the experimental portion of the study and performing data collection within the chemistry department.

R. Perez, Georgia Southern University, Statesboro, GA, USA: Served as a supervisor, providing direct guidance and expertise on developing and running the calibration curve for the spectrofluorometer.

J. Soo, Georgia Southern University, Statesboro, GA, USA: Acted as the principal investigator and primary supervisor, overseeing all phases of the research project from conception to conclusion. 

Poster Presenter

SM Samuel Mbadu, Student Member, AIHA, Georgia Southern University Statesboro, GA 
USA

1708 - Improving airborne virus detection in the workplace

Virus outbreaks, previously thought to be seasonal or occasional, have in recent times become a continual challenge. Workplace exposure to infectious viruses, such as influenza viruses, is common in certain workplaces, such as animal agriculture and health care settings. Viral infections and their associated illnesses exacerbate lost workdays and reduce productivity. Consequently, early and effective detection of infectious virus aerosols is necessary to protect workers. This research investigates a potential solution to this hurdle. 

Co-Authors

P. Raynor, Division of Environmental Health Sciences, University of Minnesota, School of Public Health, Minneapolis, MN, USA.

B. Olson, University of Minnesota, College of Science and Engineering, Department of Mechanical Engineering, Minneapolis, MN, USA.

S. Goyal, University of Minnesota, College of Veterinary Medicine, Veterinary Population Medicine Department, St. Paul, MN, USA.
N.Maher, University of Minnesota, College of Veterinary Medicine, Veterinary Population Medicine Department, St. Paul, MN, USA.
C. Yousef, University of Minnesota, College of Veterinary Medicine, Veterinary Population Medici
M.Torremorell, University of Minnesota, College of Veterinary Medicine, Veterinary Population Medicine Department, St. Paul, 

Acknowledgements & References

None 

Poster Presenter

Adepeju Adesina, University of Minnesota Falcon Heights, MN 
USA

1650 - Incorporation of Fixative in the Decontamination of Litter-bound Patients Exposed to Bacillus Anthracis via Biological Surrogate on Human Manikin to Reduce Airborne Exposure in an Arctic Environment

This presentation evaluates a cold-weather–tolerant fixative as a mitigation strategy to reduce secondary aerosolization during casualty handling. Using a full-scale clothed manikin contaminated with 1 µm biological surrogate particles, airborne release during disrobing was quantified with IOM samplers under fixative-treated and control conditions. Results demonstrated statistically significant suppression of airborne particles with fixative application. The study highlights an operationally relevant exposure control strategy for emergency response and cold-environment medical operations where traditional decontamination methods may be limited. 

Co-Authors

Dr. Jeremy Slagley, Dr. Douglas Lewis, Dr. Julie Skipper 

Acknowledgements & References

This work was completed through the support of the U.S. Air Force Research Laboratory’s 711th Human Performance Wing Force Health Protection Branch under project # AFIT 2024-116R2. 

Poster Presenter

Omar Campos, USMC Dayton, OH 
United States of America

1691 - Increased Respirable Crystalline Silica Exposure Risk Among Engineered Stone Fabrication in Chicago

Engineered stone (ES) countertops continue to rise in their popularity but pose an increased risk of silicosis for fabricators due to high respirable crystalline silica (RCS) exposure during cutting, grinding, and polishing. This study characterizes personal RCS exposures, dust composition, and particle size distributions among ES fabricators in Chicago to inform urgently needed controls and regulatory actions. 

Co-Authors

L. H.T. Go, MD, Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois Chicago, Chicago, IL, USA.
R. Cohen, MD, Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois Chicago, Chicago, IL, USA.
Y. Shao, Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois Chicago, Chicago, IL, USA. 

Acknowledgements & References

H. Hamza, MD, Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois Chicago, Chicago, IL, USA 

Poster Presenter

Alissa DeVaughn, Ramboll Chicago, IL 
USA

1675 - Investigation of Factors Influencing Sampling Pump Flow Drift

Studying respirable silica exposures among brick workers in Nepal, we found that ≈11% of samples (25/232) had pump flow rates that drifted beyond ± 5% when post-calibrated. Flow rate directly influences particle sizing when using pre-separators. Sample duration, measured respirable dust concentration, person calibrated, calibrator, and participant job category were examined as possible factors. Samples were collected following NIOSH Method 0600. Understanding this may save time and costs when conducting personal sampling. 

Co-Authors

B. Openshaw, Brigham Young University, Provo, UT, USA
G. Snow, Brigham Young University, Provo, UT, USA
J. Johnston, Brigham Young University, Provo, UT, USA 

Acknowledgements & References

S. Sanjel, Karnali Academy of Health Sciences, Jumla, Nepal  

Poster Presenter

Willow Call, Brigham Young University Provo, UT 
USA

1661 - Musculoskeletal Injury amongst Illinois Hospital Workers: Incidence, Severity and Staffing: 2018-2023

Introduction/Background
Hospital workers experience musculoskeletal disorders (WMSDs) at rates substantially higher than workers in most other industries, yet regulatory approaches have largely focused on patient-handling hazards and Registered Nurses, with limited attention to other occupational groups or staffing as a structural determinant of risk. This study examines the incidence and severity of WMSDs among Illinois hospital workers and evaluates whether nurse staffing levels are associated with injury rates. 

Co-Authors

none 

Acknowledgements & References

Thesis committee: Pratap, P; Almberg, K; Friedman, L (UIC School of Public Health, Division of Environmental and Occupational Health Sciences) 

Poster Presenter

Ron Neimark, University of Illinois School of Public Health Chicago, IL 
USA

1693 - Parental Occupational Exposures and Pregnancy Outcomes

This scoping review was conducted to gather the literature on parental occupational exposures and the associated pregnancy outcomes to identify gaps in research. 

Co-Authors

T. Huynh, University of Minnesota, Minneapolis, MN, USA
I. Burstyn, Drexel University, Philadelphia, PA, USA 

Acknowledgements & References

none 

Poster Presenter

Abigail Shirzadi, UMN Twin Cities Saint Paul, MN 

1704 - Partnering with Community Advisors to Characterize Hair Relaxer Exposures and Guide Laboratory Toxicity Testing

This community-engaged project partners with South Los Angeles salon professionals and community members to better understand real-world use of hair relaxers and other styling products that may pose occupational and consumer health risks. Through community surveying and advisory input, the project identifies products and ingredients of concern so that exposure assessment and laboratory toxicity testing reflect community experience and priorities. 

Co-Authors

E. Landskroner, UCLA, Los Angeles, USA
C. Tsai, UCLA, Los Angeles, USA
F. Schweizer UCLA, Los Angeles, USA 

Acknowledgements & References

E. Landskroner, UCLA, Los Angeles, CA, USA
C. Tsai, UCLA, Los Angeles, CA, USA
F. Schweizer, UCLA, Los Angeles, CA, USA 

Poster Presenter

Evan Zhou, UCLA Los Angeles, CA 

1655 - Process-Generated Air Contaminants in Electrospinning for Nanofibers

Electrospinning is an emerging technology used to fabricate nanofibers from polymeric solutions. Material modifications are achieved via physical and chemical mechanisms, enabling the production of diverse materials at both laboratory and industrial scales. These nanofibers have applications in textiles, biomedical engineering, and more. The electrospinning process has gained great attention over the past decade due to its versatility in producing a wide variety of polymeric fibers and its ability to consistently generate fibers in the submicron range that are difficult to achieve using conventional techniques. Despite its widespread application, limited data exists regarding airborne contaminant emissions generated during the process. 

Co-Authors

Jonghwa Oh, Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, AL, USA.
Maya Van Houten-Armstrong, Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, AL, USA.
Claudiu T. Lungu, Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, AL, USA. 

Acknowledgements & References

None 

Poster Presenter

Yetunde Diaz, MPH, University of Alabama Birmingham Birmingham, AL 

1705 - Quantifying Dynamic Factors Influencing LEV Capture Efficiency

Local exhaust ventilation is one of the most widely used engineering controls for reducing worker exposure to airborne contaminants. However, the effectiveness of these systems depends strongly on operational conditions such as airflow velocity, source proximity, and surrounding air movement. This presentation reports controlled chamber experiments that quantify how ventilation parameters influence capture efficiency for a circular flanged hood. The findings provide empirical evidence that can improve how industrial hygienists evaluate ventilation performance and interpret engineering control effectiveness in occupational settings. 

Co-Authors


P. Raynor, University of Minnesota, Minneapolis, MN, USA;
S. Arnold, University of Minnesota, Minneapolis, MN, USA;
G. Ramachandran, Johns Hopkins University, Baltimore, MD, USA;
H. Quick, University of Minnesota, Minneapolis, MN, USA 

Acknowledgements & References

S. Arnold, University of Minnesota, Minneapolis, MN, USA; G. Ramachandran, Johns Hopkins University, Baltimore, MD, USA; P. Raynor, University of Minnesota, Minneapolis, MN, USA; H. Quick, University of Minnesota, Minneapolis, MN, USA 

Poster Presenter

Ms Puleng Moshele, MS, University of Minnesota Minneapolis, MN 
United States of America

1648 - Radiological Decontamination of Litter-Bound Patients in Arctic Environments: Airborne Exposure Risks and the use of Fixants to Reduce Aerosolization

This research investigated the use of chemical binding solutions as an adjunct method for radiological decontamination of litter-bound patients in arctic environments. In such conditions, the established rinse-down decontamination process is often impractical due to extreme cold, limited water availability, and the increased physiological risks that exposure to freezing temperatures poses to patients. Therefore, this study explored an alternative approach designed to minimize secondary contamination and reduce airborne exposure during the patient handling and disrobing process.
Preliminary pilot studies evaluated various binding solution formulations for their ability to suppress aerosolization of a radiological contaminant surrogate, copper oxide (CuO). Through iterative testing, the most effective formulation was identified as a 3:2:1 ratio, three parts glycerin, two parts unscented Baby Dove body wash, and one-part water, which remained unfrozen at –18 °C (0 °F). Subsequent full-scale studies using this formulation achieved a 95.5% reduction (p = 0.00027) in the aerosolization of CuO particles compared to baseline conditions.
Comparative analysis of aerosol concentration data across all trials supports the conclusion that this binding solution provides a significant improvement in contamination control over existing methods. The results suggest that incorporating such a solution into radiological response protocols could enhance safety and effectiveness, particularly in austere or arctic operational environments where conventional decontamination methods are not feasible. 

Co-Authors

E. White, AFIT/PhD, WPAFB, OH, USA

 

Acknowledgements & References

711 Human Performance Wing: This work was completed through the support of the U.S. Air Force Research Laboratory’s 711th Human Performance Wing Force Health Protection Branch under project # AFIT 2024-116R2.
The views expressed in this thesis are those of the author and do not reflect the official policy or position of the United States Air Force, the United States Marine Corps, the Department of War, or the United States Government.
This material is declared a work of the United States Government and is not subject to copyright protection in the United States.
 

Poster Presenter

Malachijah Clark, Air Force Institute Of Technology Wright-Patterson AFB, OH 
United States of America

1700 - Reassessment of NIOSH HHE Sampling Data Using Bayesian Analysis With SDM 2.0 As An Informed Prior

This project reanalyzed personal breathing zone (PBZ) data from 10 NIOSH Health Hazard Evaluation (HHE) reports using Bayesian Decision Analysis (BDA) with the Structured Deterministic Model 2.0 as an informed prior. Posterior results were compared with original HHE conclusions to evaluate whether statistical analysis would have altered exposure interpretations or control recommendations. 

Co-Authors

Kim Garrett, Mike Johnson 

Acknowledgements & References

K, Garrett, PhD, CUNY SPH, New York, NY, USA
M, Johnson, CIH, PE, MS, CUNY SPH, New York, NY, USA

Mr. Stern would like to thank and express sincere gratitude to Dr. Kim Garrett and Mike Johnson, CIH, PE, MS for their direction, advice, and support.

Citations:
1. OSHA. Letter of Interpretation 1995-10-06-3. 1995; https://www.osha.gov/laws-regs/standardinterpretations/1995-10-06-3.
2. Tuggle R. The NIOSH Decision Scheme. American Industrial Hygiene Association Journal. 1981;42(7):493-498.
3. Kromhout H, Symanski, E, Rappaport, S. A Comprehensive Evaluation of Within- and Between-Worker Componenets of Occupational Exposure to Chemical Agents. Annuls of Occupational Hygiene. 1993;37(3):253-270.
4. Achutan C, Chen, L, Ramachandran, G. A Proposed New Strategy for Occupational Exposure Assessment. Paper presented at: AIHA Connect2024.
5. Hewett P. IHDataAnalyst - AIHA 2022: User's Manual. 2022. 

Poster Presenter

Aaron Stern, CSP, CHMM, Virginia Dept of Labor and Industry Vienna, VA 

1652 - Respirable Silica Exposures Among Brick Workers in Nepal

Exploring the underresearched connection between the brick industry and silica exposures. 

Co-Authors

W. Snow, Brigham Young University, Provo, UT, USA
G. Snow, Brigham Young University, Provo, UT, USA
J. Johnston, Brigham Young University, Provo, UT, USA  

Acknowledgements & References

S. Sanjel, Karnali Academy of Health Sciences, Jumla, Nepal 

Poster Presenter

Brinley Openshaw, Brigham Young University Highland, UT 
USA

1649 - Safety Framework for Educational 3D Printing

Desktop 3D printers are increasingly used in middle and high school classrooms, yet many of these environments were not originally designed to manage industrial-style health and safety hazards. This student poster examines how airborne emissions, thermal contact risks, electrical hazards, and spatial factors associated with desktop 3D printing can be amplified in small, enclosed, and poorly ventilated educational spaces.

Using OSHA's Hierarchy of Controls as an analytical framework, this literature-based study reframes classroom 3D printing safety as a design and engineering challenge rather than a matter of individual caution or rule compliance. By synthesizing peer-reviewed research and public health guidance, the poster emphasizes the importance of engineering controls-such as printer enclosures, local exhaust ventilation, and thoughtful equipment placement-as the most effective and sustainable strategies for risk reduction in educational settings. 

Co-Authors

none 

Acknowledgements & References

none 

Poster Presenter

Yena Kim, Student Seoul
KOR

1715 - Sample Size, GSD, Exceedance Fraction, and LOQ/OEL Effects on Compliance Decision

This study evaluates the effects of sample size, GSD, exceedance fraction (EF), and the LOQ/OEL ratio on compliance decision accuracy. A dataset containing various scenarios was generated using computer simulations. Bayesian statistical methods assuming a lognormal distribution were then applied to model compliance decision accuracy based on the proportion of correct decisions under different conditions. 

Co-Authors

J. Lavoué, University of Montréal, Montréal (Québec), Canada 

Acknowledgements & References

T. Huynh, University of Minnesota, Minneapolis, Minnesota, USA
P. Raynor, University of Minnesota, Minneapolis, Minnesota, USA
 

Poster Presenter

Thang Nguyen, N/A San Pablo, CA 

1712 - Size-Resolved Particle Emissions from Jet A Under Simulated Idle, Taxi, and Takeoff Conditions: Implications for Occupational Exposure

Aircraft ground operations produce particle emissions that contribute to occupational exposure for aviation workers. Combustion conditions during different operating modes influence particle formation and aerosol size distribution in engine exhaust. 

Co-Authors

Yevgen Nazarenko, University of Cincinnati, Cincinnati, OH, USA 

Acknowledgements & References

Nathan Bebinger, University of Cincinnati, Cincinnati, OH, USA: He was involved in the fabrication of the custom lab-scale combustor and provided technical support and training on its operation. 

Poster Presenter

Onyinye Ezeifeka, MSc., University of Cincinnati Cincinnati, OH 
United States of America

1682 - Techniques for Estimating Generation and Non-ventilation Removal Rates of Volatile Organic Compound using the Near-field/far-field (NF/FF) model

In many real-world scenarios, direct measurement data are often limited by high costs. To address these challenges, mathematical exposure models serve as critical supplementary tools. the near-field/far-field (NF/FF) model was developed to partition indoor spaces into two zones: a near-field (NF) representing the immediate vicinity of the source and the worker's breathing zone, and a far-field (FF) representing the rest of the room. NF/FF models are widely used to estimate indoor exposure concentrations; however, their application has largely been restricted to known generation rates and neglected non-ventilation removal, limiting relevance to realistic workplaces. 

Co-Authors

F.-T Liao, National Cheng Kung University, Tainan, Taiwan, R.O.C
C.-Y Hsu, University of Cincinnati, Cincinnati, OH, USA 

Acknowledgements & References

none 

Poster Presenter

Chun-Yu Chen, National Cheng Kung University Tainan, Taiwan 
Taiwan

1706 - Temporal Patterns of Radon Exposure and Ventilation Indicators in Elementary School Classrooms

Radon exposure in schools is typically assessed using short-term testing, which may overlook how concentrations change throughout the school day. Using continuous radon and CO₂ monitoring in Salt Lake City elementary schools, this project explores how ventilation patterns influence classroom radon concentrations during occupied hours. The results demonstrate how continuous monitoring can improve exposure assessment and support practical ventilation strategies to reduce potential radon exposure in school environments. 

Co-Authors

S. Reyes, University of Utah, South Jordan, UT, USA
J. Cornwell, University of Utah, Salt Lake City, UT, USA
N. Daher, University of Utah, Salt Lake City, UT, USA 

Acknowledgements & References

J. Dimpor, University of Utah, Salt Lake City, UT, USA 

Poster Presenter

Kate Barry, University of Utah Salt Lake City, UT 
United States of America

1657 - Translating Conflict Exposure Histories into Quantitative Metrics

Environmental exposure assessment is challenging in conflict settings where environmental monitoring and biomonitoring are often infeasible. This study describes the development of a Composite Exposure Index (CEI) designed to translate civilian exposure histories obtained through structured qualitative surveys into quantitative metrics suitable for environmental health analysis. 

Co-Authors

E. Wells, Purdue University, West Lafayette, IN, USA
K. Rubaii, Purdue University, West Lafayette, IN, USA 

Acknowledgements & References

B. Miranda-Plaza, Purdue University, West Lafayette, IN, USA 

Poster Presenter

Ryleigh Turner, Purdue University West Lafayette, IN 
USA

1696 - Ultra Fine Particulate Generation in Asbestos Abatement Settings Utilizing Mechanical Floor Grinding

A quasi-experimental field study with repeated measurements was conducted to evaluate ultrafine particle concentrations during active abatement activities, where crews are utilizing large scale mechanical grinding. 

Co-Authors

None 

Acknowledgements & References

None 

Poster Presenter

Joseph Sterner, JMS Environmental Associates, Ltd. Westmont, IL 
United States of America

1677 - Understanding Equity in Standards for Personal Protective Equipment (PPE)

This study systematically and empirically evaluates perceptions of personal protective equipment (PPE) equity within the standards development ecosystem to understand how to improve PPE protections for all workers. Specifically, it seeks to: assess how industrial hygiene (IH) / occupational and environmental health and safety (OEHS) professionals understand PPE equity; examine whether perceptions differ by involvement in PPE standards development; identify where equity is perceived to be incorporated across the standards lifecycle; explore perceived structural and representation barriers in standards governance; and evaluate how standards development processes align with the National Institute for Occupational Safety and Health's (NIOSH) PPE equity framework. 

Co-Authors

E. Stone, independent researcher, Baltimore, MD, USA 

Acknowledgements & References

Cassella C, Fagan EJ, Theriault S. 2023. Earmarks are back: How Democrats and Republicans differ. Brookings Institution. Retreived from: www.brookings.edu/articles/earmarks-are-back-how-democrats-and-republicans-differ/ (accessed: May 25, 2025).

Flynn MA, Keller B, DeLaney SC. 2017. Promotion of alternative-sized personal protective equipment. J Safety Res, 63, 43-46. doi: 10.1016/j.jsr.2017.08.004.

Hsiao H, Friess M, Bradtmiller B, & Rohlf FJ. 2009. Development of sizing structure for fall arrest harness design. Ergonomics, 52(9), 1128–1143. Doi: 10.1080/00140130902919105.

Hsiao H, Whitestone J, Kau TY, Whisler R. 2014. Sizing firefighters: method and implications. Hum Factors, 56(5), 873-910. doi:10.1177/0018720813516359.

Min S. 2015. Gendered role communication in marketing blue-collar occupational gear and clothing in the United States. Fash Text, 2(24). doi: 10.1186/s40691-015-0051-8.

Morikawa M & Morrison J. 2004. Who Develops ISO Standards? A Survey of Participation in ISO’s International Standards Development Processes. In: Pacific Institute.

Nawaz N & Troynikov O. 2018. Firefighters' protective jackets: Fit to female form and its effects on attributes relevant to thermal comfort. J Occup Environ Hyg, 15(11), 792-802. doi:10.1080/15459624.2018.1506587.

NIOSH. 2024b. Proceedings of the 2022 Equitable PPE Protections Workshop: A National Strategy for Equitable PPE Protections for All U.S. Workers (J. L. Wehring, F.; Dempsey, P.G.; Schall, J.; McCleery, T.; Yoon, K.; Moore, S.; D’Alessandro, M. Eds.). Pittsburgh, PA: Department of Health and Human Services, Centers for Disease Control and Prevention. doi:10.26616/NIOSHPUB2024106

Oliphant JB & Cerda A. 2022. Republicans and Democrats have different top priorities for U.S. immigration policy. In. Washington, DC: Pew Research Center

Potter RA. 2021. Democratic presidents regulate. Republican presidents deregulate. Congress could stop the pendulum swing. The Washington Post. Retrieved from www.washingtonpost.com/politics/2021/10/14/democratic-presidents-regulate-republican-presidents-deregulate-congress-could-stop-pendulum-swing/ (accessed: May 25, 2025).

Sokolowski SL, Griffin L, Wu Y, et.al. 2022. Examination of current U.S. female firefighting personal protective equipment (PPE) sizing and fitting process challenges: an opportunity to improve safety. Fashion and Textiles, 9(1). doi: 10.1186/s40691-022-00314-8.

Steinmueller WE. 2017. Platforms and standards: A historical perspective. In: Hawkins R, Blind K, Page R (Eds.) Handbook of Innovation and Standards (79-104). Edward Elgar Publishing, doi:10.4337/9781783470082.00012.

Townsend K, Sterman S, Salter E, Harrigan K. 2022. Out of isolation: Designing reusable PPE gowns based on an understanding of healthcare workers’ lived experiences. Paper presented at the Design Research Society 2022. Bilbao, Spain. doi:10.21606/drs.2022.732.
 

Poster Presenter

Kelsey Babik, Tidewater, Inc. Baltimore, MD 
USA

1699 - VOC Exposure Profile for AVGAS Exposed Airport Workers

Aviation gas (AVGAS) is a leaded fuel used in small aircraft. Harmful VOCs may be emitted from AVGAS emissions and when fueling planes. There is limited data on occupational exposure to AVGAS, so this pilot study aims to determine concentrations of benzene, toluene, hexane, and aromatic hydrocarbons in AVGAS exposures at small airports. Benzene exceeded the NIOSH REL-STEL of 1 ppm during fuel-related tasks. These data inform which VOC species to prioritize in a larger study on airport employee exposures. 

Co-Authors

R. Turner, Purdue University, West Lafayette, IN, USA
J. Malone, Purdue University, West Lafayette, IN, USA
E. Wells, Purdue University, West Lafayette, IN, USA 

Acknowledgements & References

S. Liu, Purdue University, West Lafayette, IN, USA: Discussed methods and analysis
J. Park, Purdue University, West Lafayette, IN, USA: Borrowed some equipment and discussed gas detector tube methods
 

Poster Presenter

Matthew Klein, Purdue University Lafayette, IN 
USA