The development of a revolving personal sampler.
The American Conference of Governmental Industrial Hygienists recommends the use of threshold limit value-short-term exposure limit (TLV-STEL) and ceiling limit (TLV-C) as guide-lines to prevent workers from irritation, chronic or irreversible tissue damage, and narcosis caused by intense exposures to hazardous substances for short periods. To evaluate whether a worker's exposure level is within the specified limit, it is desirable to measure every 15-min time-weighted average concentration (15-min TWA) during a workday. The authors developed a revolving personal sampler that can collect consecutive short-term exposure samples. A recovery test of toluene of various concentrations was conducted by using this sampler. Toluene concentrations in the test atmosphere were 10, 50, 100, 200, and 400 ppm. The test results showed that the mean recovery at each concentration was 97.7% to 100.0%, and the coefficient of variation was 0.008 to 0.015. The revolving personal sampler can be used to monitor every 15-min TWA of a worker.
Kumagai
S
S
Department of Occupational Health, Osaka Prefectural Institute of Public Health, Japan.
Matsunaga
I
I
D000395:Air Pollutants, Occupational / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation*; D004867:Equipment Design; D006801:Humans; D007440:Intubation / Q000295:instrumentation; D016273:Occupational Exposure; D011138:Polytetrafluoroethylene; D015203:Reproducibility of Results; D012212:Rheology; D012399:Rotation; D012826:Silicone Elastomers; D014050:Toluene / Q000032:analysis
D000395:Air Pollutants, Occupational; D012826:Silicone Elastomers; D014050:Toluene; D011138:Polytetrafluoroethylene