The effects of temperature and pressure on airborne exposure concentrations when performing compliance evaluations using ACGIH TLVs and OSHA PELs

Applied Occupational and Environmental Hygiene
D J Stephenson, D R Lillquist

Abstract

Occupational hygienists perform air sampling to characterize airborne contaminant emissions, assess occupational exposures, and establish allowable workplace airborne exposure concentrations. To perform these air sampling applications, occupational hygienists often compare an airborne exposure concentration to a corresponding American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value (TLV) or an Occupational Safety and Health Administration (OSHA) permissible exposure limit (PEL). To perform such comparisons, one must understand the physiological assumptions used to establish these occupational exposure limits, the relationship between a workplace airborne exposure concentration and its associated TLV or PEL, and the effect of temperature and pressure on the performance of an accurate compliance evaluation. This article illustrates the correct procedure for performing compliance evaluations using airborne exposure concentrations expressed in both parts per million and milligrams per cubic meter. In so doing, a brief discussion is given on the physiological assumptions used to establish TLVs and PELs. It is further shown how an accurate compliance evaluation is fundamentally based on comparison of a ...Continue Reading

Citations

Sep 1, 2003·Environmental Toxicology and Pharmacology·Christoph van ThrielClaus Bachert
Dec 19, 2003·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Dennis J PaustenbachPatrick J Sheehan
Apr 14, 2006·Journal of Occupational Health·Tomoko Takigawa, Yoko Endo
Dec 16, 2006·Sangyō eiseigaku zasshi = Journal of occupational health·Mitsunori Enomoto

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