The Effect of Sampling Inlets on the PM-10 and PM-15 to TSP Concentration Ratios

Abstract
The products of sampling effectiveness as measured in wind tunnel tests and typical size distributions were integrated over particle size to determine mass collection efficiencies for the HIVOL sampler, the HIVOL with a size selective inlet, and the Sierra 244 and the Beckman SAMPLAIR dichotomous samplers. Hypothetical sampling effectiveness curves were proposed for a 10 μm inlet and the calculated mass collection efficiencies of such inlets were compared to those of existing 15 μm inlets. Average ratios of IP to TSP from measurements in EPA's Inhalable Particulate (IP) matter sampling network were compared to the calculated ratios; the agreement of these ratios is close.

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