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The development of a revolving personal sampler
1Department of Occupational Health, Osaka Prefectural Institute of Public Health, Japan.
American Industrial Hygiene Association Journal
|April 1, 1992
Summary
A new revolving personal sampler effectively monitors 15-minute time-weighted average (15-min TWA) concentrations, ensuring worker safety from hazardous substances. This device accurately measures short-term exposures, aiding compliance with occupational exposure limits.
Area of Science:
- Occupational Health and Safety
- Industrial Hygiene
- Environmental Monitoring
Background:
- Occupational exposure limits, such as Threshold Limit Value-Short-Term Exposure Limit (TLV-STEL) and Ceiling Limit (TLV-C), are crucial for preventing adverse health effects from short-term, high-concentration exposures to hazardous substances.
- Accurate measurement of short-term exposure levels, specifically 15-minute time-weighted averages (15-min TWA), is essential for evaluating worker exposure and ensuring compliance with recommended guidelines.
Purpose of the Study:
- To develop and evaluate a novel revolving personal sampler capable of collecting consecutive short-term exposure samples.
- To assess the performance of the developed sampler in accurately measuring airborne concentrations of hazardous substances.
Main Methods:
- Development of a revolving personal sampler designed for collecting sequential short-term air samples.
- Conducting recovery tests using the developed sampler with toluene at various concentrations (10, 50, 100, 200, and 400 ppm).
Main Results:
- The revolving personal sampler demonstrated high recovery rates for toluene, ranging from 97.7% to 100.0% across the tested concentrations.
- The coefficient of variation for the measurements was consistently low, between 0.008 and 0.015, indicating good precision.
Conclusions:
- The developed revolving personal sampler is a viable tool for monitoring 15-min TWA concentrations of airborne contaminants.
- This technology can assist industrial hygienists in assessing worker exposure to hazardous substances and ensuring adherence to occupational exposure limits.