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Significance and Use
Asphalt is a material used in the construction of roads and as a roofing material and sealant.
This test method provides a means of evaluating exposure to asphalt fume in the working environment at the presently recommended exposure guidelines.
The threshold limit value (TLV) for asphalt (petroleum) fumes is 5 mg/m3 8-h TWA, (1998 Threshold Limit Values and Biological Exposure Indices, ACGIH ).
This procedure has been adapted from NIOSH Method 5023 (withdrawn prior to 4th edition (1994) and replaced in 1998 with NIOSH Method 5042) and OSHA Method 58 to reduce the level of background contamination providing better reproducibility.
1.1 This test method covers the determination of asphalt fume particulate matter (as benzene soluble fraction) and total particulate matter weight in workplace atmospheres using a polytetrafluoroethylene (PTFE) filter methodology.
1.2 This procedure has been adapted from NIOSH Method 5023 (withdrawn prior to 4th edition (1994) and replaced in 1998 with NIOSH Method 5042) and OSHA Method 58 to reduce the level of background contamination providing better reproducibility.
1.3 This procedure is compatible with high flow rate personal sampling equipment–0.5 to 2.0 L/min. It can be used for personal or area monitoring.
1.4 The sampling method develops a time-weighted average (TWA) sample and can be used to determine short-term exposure limit (STEL).
1.5 The applicable concentration range for the TWA sample is from 0.2 to 2.0 mg/m3.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For more specific precautionary statements, see Section 9.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Occupational Safety and Health Administration (OSHA) MethodsOSHAMethod58 Coal Tar Pitch Volatiles
National Institute for Occupational Safety and Health (NIOSH) Manual of Analytical MethodsNIOSHMethod5042 Benzene --Soluble Fraction and Total Particulate (Asphalt Fume)
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
ICS Number Code 13.040.30 (Workplace atmospheres)
UNSPSC Code 77121500(Air pollution)