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Air sampling methodology for asphalt fume in asphalt production and asphalt roofing manufacturing facilities: total particulate sampler versus inhalable particulate sampler.
Appl Occup Environ Hyg. 2003 May; 18(5):358-67.AO

Abstract

In 2000, the American Conference of Governmental Industrial Hygienists (ACGIH(R)) changed its 1971 threshold limit value (TLV) for 8-hour time-weighted average (TWA) exposure to asphalt from 5 mg/m(3) total particulate (generally < or =40 micrometer [microm] diameter) to 0.5 mg/m(3) inhalable particulate (< or =100 microm aerodynamic diameter) as benzene-soluble aerosol. To date, no inhalable particulate sampling method has been standardized and validated for asphalt fume. Furthermore, much of the historical data were collected using total particulate samplers, and the comparability of total versus inhalable size fractions of asphalt fume is not known. Therefore, the present study compared results from two types of asphalt fume samplers: 1) a traditional total particulate sampler with a 37-mm filter in a closed-face cassette with a 4-mm orifice (NIOSH 5042) versus (2) an inhalable particulate sampler designed by the IOM with a 15-mm orifice. A total of 75 simultaneous pairs of samples were collected, including personal and area samples from 19 roofing and asphalt production facilities operated by 7 different manufacturers. Each sample was analyzed for total mass collected and for benzene-soluble mass. Data from the two sampling methods (total versus inhalable) were comparable for asphalt fumes up to an aerosol concentration of 10 mg/m(3). However, we conclude that the traditional total particulate method is preferable, for this reason: The vast majority of asphalt fume particles are <12.5 microm in diameter. The traditional sampler is designed to collect primarily particles < or =40 microm, while the IOM sampler is optimized for collecting particles < or =100 microm. Thus, the traditional sampler is less likely than the IOM sampler to collect the larger-size fraction of airborne particles, most of which are non-asphalt dust.

Authors+Show Affiliations

Johns Manville, Littleton, Colorado, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12746079

Citation

Calzavara, Thomas S., et al. "Air Sampling Methodology for Asphalt Fume in Asphalt Production and Asphalt Roofing Manufacturing Facilities: Total Particulate Sampler Versus Inhalable Particulate Sampler." Applied Occupational and Environmental Hygiene, vol. 18, no. 5, 2003, pp. 358-67.
Calzavara TS, Carter CM, Axten C. Air sampling methodology for asphalt fume in asphalt production and asphalt roofing manufacturing facilities: total particulate sampler versus inhalable particulate sampler. Appl Occup Environ Hyg. 2003;18(5):358-67.
Calzavara, T. S., Carter, C. M., & Axten, C. (2003). Air sampling methodology for asphalt fume in asphalt production and asphalt roofing manufacturing facilities: total particulate sampler versus inhalable particulate sampler. Applied Occupational and Environmental Hygiene, 18(5), 358-67.
Calzavara TS, Carter CM, Axten C. Air Sampling Methodology for Asphalt Fume in Asphalt Production and Asphalt Roofing Manufacturing Facilities: Total Particulate Sampler Versus Inhalable Particulate Sampler. Appl Occup Environ Hyg. 2003;18(5):358-67. PubMed PMID: 12746079.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Air sampling methodology for asphalt fume in asphalt production and asphalt roofing manufacturing facilities: total particulate sampler versus inhalable particulate sampler. AU - Calzavara,Thomas S, AU - Carter,Charles M, AU - Axten,Charles, PY - 2003/5/15/pubmed PY - 2003/7/3/medline PY - 2003/5/15/entrez SP - 358 EP - 67 JF - Applied occupational and environmental hygiene JO - Appl Occup Environ Hyg VL - 18 IS - 5 N2 - In 2000, the American Conference of Governmental Industrial Hygienists (ACGIH(R)) changed its 1971 threshold limit value (TLV) for 8-hour time-weighted average (TWA) exposure to asphalt from 5 mg/m(3) total particulate (generally < or =40 micrometer [microm] diameter) to 0.5 mg/m(3) inhalable particulate (< or =100 microm aerodynamic diameter) as benzene-soluble aerosol. To date, no inhalable particulate sampling method has been standardized and validated for asphalt fume. Furthermore, much of the historical data were collected using total particulate samplers, and the comparability of total versus inhalable size fractions of asphalt fume is not known. Therefore, the present study compared results from two types of asphalt fume samplers: 1) a traditional total particulate sampler with a 37-mm filter in a closed-face cassette with a 4-mm orifice (NIOSH 5042) versus (2) an inhalable particulate sampler designed by the IOM with a 15-mm orifice. A total of 75 simultaneous pairs of samples were collected, including personal and area samples from 19 roofing and asphalt production facilities operated by 7 different manufacturers. Each sample was analyzed for total mass collected and for benzene-soluble mass. Data from the two sampling methods (total versus inhalable) were comparable for asphalt fumes up to an aerosol concentration of 10 mg/m(3). However, we conclude that the traditional total particulate method is preferable, for this reason: The vast majority of asphalt fume particles are <12.5 microm in diameter. The traditional sampler is designed to collect primarily particles < or =40 microm, while the IOM sampler is optimized for collecting particles < or =100 microm. Thus, the traditional sampler is less likely than the IOM sampler to collect the larger-size fraction of airborne particles, most of which are non-asphalt dust. SN - 1047-322X UR - https://www.unboundmedicine.com/medline/citation/12746079/Air_sampling_methodology_for_asphalt_fume_in_asphalt_production_and_asphalt_roofing_manufacturing_facilities:_total_particulate_sampler_versus_inhalable_particulate_sampler_ L2 - https://medlineplus.gov/occupationalhealth.html DB - PRIME DP - Unbound Medicine ER -