Environmental Sampling at a Copper Smelter.
Department of Family and Community Medicine, University of Utah, Salt Lake City, Utah 1974:68 pages
Measurements of respiratory exposures of copper (7440508) smelter workers to SO2 (7446095) and other contaminants (sulfur compounds and dusts) were undertaken to enable evaluation of pollutant dose associated with both acute and chronic pulmonary effects. Smelter emissions in the work area were not uniform with respect to time and space, and worker exposures were to some extent self-limiting. A personal monitor sampler suitable for measuring SO2 and dust exposure under intermittent respirator use was developed. Eight such samplers have been used for more than 2,400 hours (300 eight hour shifts). Stationary area samples were used in surveys of the smelter and in the control case, truck maintenance shop, to collect consecutive, round the clock, 2 hour and 8 hour dust and gas samples. Dust samples were analyzed for hot water extractable sulfate and acid extractable copper. At the truck shop consecutive 2 hour samples were collected for sulfur-dioxide, formaldehyde (50000), and acrolein (107028). A total of 759 personal monitor samples and 663 stationary area samples were collected. SO2 concentration in two work locations of the reverberatory furnace area showed very large, short term variation. The time weighted average was approximately 30mg/cubic meter, there were nine 1 minute periods exceeding 130mg/cubic meter, and three brief puffs approached 520mg/cubic meter. Dust concentrations averaged 1.07mg/cubic meter. Smelter workers and controls had approximately the same exposures to copper and manganese (7439965). Smelter workers were exposed to more respirable sulfite, arsenic (7440382), and lead (7439921) aerosol than the controls.
NIOSH-Contract; Contract-099-74-0005; Oxides; Toxic-substances; Exhaust-system; Measurement-instrumentation; Monitoring-systems; Measurement-methods; Dust-sampling; Environmental-monitoring; Respiratory-effects; Exposure-levels; Physiological-response; Heavy-metals; Smelting;
7440-50-8; 7446-09-5; 50-00-0; 107-02-8; 7439-96-5; 7440-38-2; 7439-92-1;
NTIS Accession No.
Department of Family and Community Medicine, University of Utah, Salt Lake City, Utah