Proposed performance criteria for samplers of total suspended particulate matter

In order to facilitate intercomparison of dust concentrations measured with different samplers of total suspended particulates (TSP) the following scheme is proposed: based on regressions of experimental data permitting particle size values d sub 80 and d sub 50 (d sub k is the particle diameter of the aerosol mass size distribution for which k per cent of the mass comes with particles smaller than d sub k) as a function of wind speed, the knowledge of the average wind speed occurring during a typical sampling interval permits an assessment of the characteristic stop distances S sub 50, S sub 80 of the aerosol to be sampled. If the samplers are characterized by the maximum particle stop distance up to which they allow representative sampling, suitable correction factors derived from S sub 50, S sub 80 allow conservative estimates of the TSP concentration.