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INTRODUCTION TO OCCUPATIONAL HEALTH |
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Threshold Limit Values |
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Now that we have covered the types of air contaminants and their
measurements, it is now important to cover airborne concentration limitations. Threshold limit
values (TLVs) have been established for airborne concentrations of many chemical
compounds. It is important to understand something about TLVs and the terminology in which
their concentrations are expressed. The American Conference of Governmental Industrial Hygienists (ACGIH) publishes annually a list of "Threshold Limit Values and Biological Exposure Indices". The lists are reviewed annually and values are updated as relative data becomes available. The ACGIH is not an official government agency. Membership is limited to professional personnel in government agencies or educational institutions engaged in occupational safety and health programs. |
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