A need and an opportunity: AIHA should assume a leadership role in reforming risk assessment.
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Biomedical subjects
Publications and source records attributed to K J Caplan.
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Plant-scale experimental sampling programs were carried out to determine the contribution to the lead-in-air exposure from (a) fork-truck transport of pasted plates in racks and (b) manual loading and unloading of plates from racks. Fork-truck transport was found not significant under "clean" conditions. Manual loading and unloading was found significant.
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The 10 mm cyclone respirable mass sampler was evaluated to determine the flow rate which best matched the BMRC and the LASL-ACGIH criteria and to determine effects of pulsating flow, particle charge, mass loading and sampler orientation. Part 1, this paper, describes the work with monodisperse aerosol. The best match for BMRC was 1.4 lpm; for LASL, 1.7 lpm. The two separate criteria should be merged. The 10 mm cyclone is two separate criteria should be merged. The 10 mm cyclone is better for sampling logistics than the BMRC horizontal elutriator.
The 10 mm cyclone respirable mass sampler was evaluated to determine the flow rate which best matched the BMRC and the LASL-ACGIH criteria, and to determine effects of pulsating flow, particle charge, mass loading, and sampler orientation. Part II, this paper, presents the work with coal dust. There is no significant difference between results obtained, for normal ranges of airborne dust concentration and size distribution, due to particle charge, sampler orientation or position (except upside down, which was not investigated), dust concentration, and ambient air velocity.
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