E1: Research Roundup Aerosols and Airborne Particulates 2
University of Texas Health Science Center at Houston School of Public Health
Houston, TX
United States of America
Tue, 5/21: 8:00 AM - 9:00 AM EDT
00380
Research Roundup
00380
Research Roundup
Greater Columbus Convention Center
Room: A 223
CM Credit Hours: 1
Content Level
Intermediate
Organizational Category
Academia/Education
Corporation/Company
Primary Industry
All Industries
Healthcare/Pharma
Laboratories
Office Environment
Topics
Aerosols & Airborne Particulates
Available as part of AIHA CONNECT OnDemand
Engineering Controls and Ventilation
Healthcare
Indoor Air Quality
Risk Assessment and Management
Presentations
E1a. Respirable Aerosol Concentrations in Open Multi-Chair Dental Clinics
At the start of the COVID-19 pandemic, dental clinics underwent closure, except for emergency cases; primarily due to availability of N95 respirators and screening tools for identifying infected patients. The nature of dental procedures (i.e., patients are unmasked and aerosol generation by many procedures) necessitates a comprehensive understanding of aerosol production and transport. This understanding is crucial in developing protocols to protect patients and dental workers within these environments. Phase 1 of this study looked at how local exhaust ventilation systems worked in controlling aerosol movement between dental operators within a room containing 60 operators performing four different dental procedures. Phase 2 measured respirable aerosol concentrations when two-handed dentistry practices occurred with real patients. The focus was on concentrations of transported particles rather than at the source.
Co-Authors
N. D'Antonio, College of Public Health The University of Iowa, Iowa City, IA, USA
M. Kanellis, College of Dentistry The University of Iowa, Iowa City, IA, USA
B. Howe, College of Dentistry The University of Iowa, Iowa City, IA, USA
T. Renee Anthony, College of Public Health The University of Iowa, Iowa City, IA, USA
M. Kanellis, College of Dentistry The University of Iowa, Iowa City, IA, USA
B. Howe, College of Dentistry The University of Iowa, Iowa City, IA, USA
T. Renee Anthony, College of Public Health The University of Iowa, Iowa City, IA, USA
Acknowledgements & References
none
Author
Justin Newnum, MS, CIH, CSP, University of Iowa - EHS Iowa City, IAUnited States of America
E1b. Health Risks With Secondary Exposure to E-Cigarette Aerosol
Secondary exposure to e-cigarette aerosol is an emerging occupational and environmental health issue. Therefore, there is a need for passive vaping health risk studies to assess the impact of vaping on public health. This research conducted a series of experiments in a laboratory room using an e-cigarette puffing machine and a unique aerosol lung deposition experimental apparatus to study secondary exposure to e-cigarette aerosol. With the metal composition of e-cigarette aerosol also obtained in this study, health risks caused by transition metals present in e-cigarette aerosol were successfully and reasonably estimated for passive vaping scenarios designed.
Co-Authors
none
Acknowledgements & References
Funding for this study was supported by Grant No. 5T42OH008421 from the National Institute for Occupational Safety and Health (NIOSH) / Centers for Disease Control and Prevention (CDC) to the Southwest Center for Occupational and Environmental Health (SWCOEH).
Author
Wei-Chung Su, PhD, CIH, University of Texas Health Science Center at Houston School of Public Health Houston, TXUnited States of America