Abstract No:
1487
Abstract Type:
Professional Poster
Authors:
K Gambino1
Institutions:
1SGS Galson Laboratories, Inc., East Syracuse, NY
Presenter:
Kelly Gambino
SGS Galson Laboratories, Inc.
Description:
Stability study of Vinyl chloride. Method modification for NIOSH 1007.
Situation / Problem:
Vinyl Chloride is a known human carcinogen. Prolonged exposure can cause serious health issues, such as rare liver cancers. Vinyl Chloride can be found in pipes (PVC), packaging materials, some household items and may be found in water and soil from industrial releases. The OSHA PEL for Vinyl Chloride is 1 ppm. Vinyl chloride is an early eluting volatile organic compound that is analyzed by modified NIOSH 1007(GC/FID).
NIOSH 1007 states to analyze the sample within 30 minutes of the sample being prepared. This proves to be a challenge on the GC/FID, as the run time per injection is minimally ~15 minutes. By the time the opening quality controls have run on the instrument, 30 minutes has already passed since the sample(s) have been prepared.
Methods:
NIOSH 1007 states to analyze the sample within 30 minutes of the sample being prepared. This proves to be a challenge on the GC/FID, as the run time per injection is minimally ~15 minutes. By the time the opening quality controls have run on the instrument, 30 minutes has already passed since the sample(s) have been prepared.
To modify this method, a stability study over a period of 5 days was performed using the Assay 566 badges. Five spikes were prepared at LOQ level, 0.05ppm. Three spikes were prepared at ½ PEL, 0.5ppm, and three more spikes were prepared at the PEL, 1.0 ppm. Each spike was split into five insert vials and kept at room temperature.
Results / Conclusions:
An aliquot of each spike was run immediately after sample preparation and then again at 24, 48, 72, 96 and 120 hours. The data was gathered and showed stability of the sample extracts with a variation equal to or less than 11.1% across all three concentrations evaluated. The variation in recoveries across the three spike levels evaluated was well within the lab method uncertainty for tubes (<27%) and badges (<20.4%). Based on lab method uncertainty, it is not possible to demonstrate a change in stability of <5%, as has been cited in NIOSH and OSHA literature. However, the lab asserts that the data, showing both good recoveries and a spread of not greater than 11.1% amongst levels tested, is justification for recommending approval of 5-day stability study for extracts as a method modification.
Core Competencies:
Indoor Air Quality
Choose at least one (1), and up to five, (5) keywords from the following list. These selections will optimize your presentation's search results for attendees.
Indoor air quality
Labs – Health & Safety, Testing
Based on the selected primary competency area of your proposal, select one group below that would be best suited to serve as a subject matter expert for peer review:
(Select one)
Indoor Air Quality Task Force
Based on the information that will be presented during your proposed session, please indicate the targeted audience practice level: (select one)
Practitioner: Practitioner is a job title given to persons in various occupational fields who are trained to assist professionals but are not themselves licensed or certified at a professional level by a certification body recognized by the National Accreditation Recognition (NAR) Committee of IOHA. The IH/OH practitioner performs tasks requiring significant knowledge and skill in the IH/OH field, such as conducting worker exposure monitoring and, in some cases, may even function independently of a professional IH/OH but may not be involved in the breadth of IH/OH practice nor have the level of responsibility of a professional IH/OH certified by examination.
The IH/OH practitioner requires a certain level of education that can be obtained from an accredited university or equivalent. Additional training in specific skill sets that provide additional career paths to the IH/OH practitioner can also be obtained. IH/OH practitioners may also serve as team leaders or project managers.
Was this session organized by an AIHA Technical Committee, Special Interest Group, Working Group, Advisory Group or other AIHA project Team?
No
Are worker exposure data and/or results of worker exposure data analysis presented?
No
How will this help advance the science of IH/OH?
Stability study data for vinyl chloride- stability of analyte up to at least 5 days from sample preparation
What level would you consider your presentation content geared towards?
Intermediate: Specific topics within a subject. The participant would have two (2) to ten (10) years experience in industrial hygiene or OEHS and a good understanding of the subject area, but not of the specific topic presented. Prerequisites required: another course, skill, or working knowledge of the general subject.
Have you presented this information before?
No
I have read and agree to these guidelines.
Yes