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Determination of Short-term Exposure with a Direct Reading Photoionization Detector
- Source :
- The Annals of Occupational Hygiene.
- Publication Year :
- 2004
- Publisher :
- Oxford University Press (OUP), 2004.
-
Abstract
- The use of a direct reading photoionization detector (PID) to determine short-term solvent exposures is described in the present paper. To assess the relevance of such a total exposure evaluation it was necessary to compare it with the real concentration of pollutants. This comparison was made by measuring in parallel with the PID determination the concentration of each pollutant using a standard technique, i.e. sampling on charcoal tubes and subsequent analysis by gas chromatography. Laboratory tests showed that the linearity of the answer of the PID is good for many compounds and for a mixture of these compounds. Similar tests were carried out for painters in workplaces with the same good correlations (determination coefficient r 2 close to 1) between the PID response and the real concentration of the pollutants measured on the sampling tubes. The use of PID also allowed determination of the exposure profile of the workers and comparison of the short-term exposure to the corresponding limit values. Many cases of the short-term limit values being exceeded were revealed by use of the PID, although very few cases of the long-term limit values have been found by the usual sampling (charcoal tube) and analytical (gas chromatography) methods.
- Subjects :
- Pollutant
Chromatography, Gas
Chemistry
Direct reading
Public Health, Environmental and Occupational Health
Analytical chemistry
Sampling (statistics)
PID controller
General Medicine
Standard technique
Chemistry Techniques, Analytical
Photoionization detector
Occupational Exposure
Solvents
Forensic engineering
Humans
Maximum Allowable Concentration
Limit (mathematics)
Gas chromatography
Subjects
Details
- ISSN :
- 14753162
- Database :
- OpenAIRE
- Journal :
- The Annals of Occupational Hygiene
- Accession number :
- edsair.doi.dedup.....dca7592f5ee289b752fbd7c2c67ad112