Abstract
Methods for the measurement and analysis of asbestos and other fibers in air, water, dust, and bulk materials vary by type of scenario and according to applicable laws and rules. Two surveys and a focus group were used to identify the most important information gaps in asbestos exposure assessments. The highest priority gaps were identifying analytical procedures and counting rules needed for asbestos detection; comparing the efficiency of 0.45-micron pore size filters versus 0.8-micron pore size filter media; rating the efficiency of polycarbonate versus mixed cellulose ester filters, and the need for bench-level testing of filters to evaluate fiber collection performance of these filter media. Other key responses included the need for consistency of analytical procedures and counting rules to determine suitable procedures for asbestos detection and quantitation in bulk samples, air, settled dust, and soil for field monitoring and risk analysis; need to identify underlying factors and physical dynamics t...
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