Personal samples for exposure to dust, diesel exhaust, quartz, and welding fume were collected an heavy and highway construction workers. The respirable, thoracic, and inhalable fractions to dust and quartz exposures were estimated from 260 personal impactor samples. Respirable quartz exposures exceeded the National Institute for Occupational Safety and Health (NIOSH) recommended exposure limit (REL) in 7-31% of cases for the trades sampled. More than 50% of the samples in the installation of drop ceilings and wall tiles and concrete finish Operations exceeded the NIOSH REL for quartz. Thoracic exposures to quartz and dust exceeded respirable exposures by a factor of 4.5 and 2.8, respectively. Inhalable exposures to quartz and dust exceeded respirable exposures by a factor of 25.6 and 9.3, respectively. These findings are important due to the identification of quartz as a carcinogen by the National Toxicology Program and the International Agency for Researoh on Cancer. Fourteen percent of the personal samples for EC (n=261), collected as a marker for diesel exhaust, exceeded the American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value (TLV) for diesel exhaust. Seventeen ot the 22 (77%) samples taken during a partially enclosed welding Operation reached or exceeded the AGGIH TLV of 5 mg/m3 for welding fume.
Exposures to quartz, diesel, dust, and welding fumes during heavy and highway construction
AIHA Journal ; 63 , 4 ; 447-457
2002
11 Seiten, 8 Tabellen, 62 Quellen
Aufsatz (Zeitschrift)
Englisch
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