Intercomparison of high-volume PM10 samplers at a site with high-particulate concentrations
Commercially available high-volume PM10 samplers were intercompared at a site in Phoenix characterized by high concentrations of coarse particles.^Over a 21-day period, Sierra Andersen 321A (SA 321A) samplers gave PM10 measurements 58% higher than the Wedding IP10 (WED) samplers and 16% higher than a SA 321A sampler that had an oil coating on the internal impaction surfaces of the inlet.^WED samplers that were subjected to a simple brush-cleaning procedure after each sampling period gave PM10 results 16% higher than the WED samplers not subjected to cleaning.^The oiled SA 321A sampler gave PM10 values 15% higher than the cleaned WED samplers.^The results demonstrate that the SA 321A overestimates PM10 when sampling in an environment with high coarse-particle concentrations.^The over collection results from pass-through of large particles, and can be minimized by oiling the internal impaction surfaces of the inlet.^The WED sampler underestimates PM10 after several days of sampling in such an environment
Purdue, L. J., Rodes, C., Rehme, K. A., Holland, D. M., & Bond, A. E. (1986). Intercomparison of high-volume PM10 samplers at a site with high-particulate concentrations. JAPCA, 36(8), 917-920.