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INVESTIGATION OF FILTER MEDIA FOR USE IN THE DETERMINATION OF MASS CONCENTRATIONS OF AMBIENT PARTICULATE MATTER
Citation:
Rehme, K., C. Smith, M. Beard, AND T. Fitz-Simons. INVESTIGATION OF FILTER MEDIA FOR USE IN THE DETERMINATION OF MASS CONCENTRATIONS OF AMBIENT PARTICULATE MATTER. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/4-84/048 (NTIS PB84199876).
Description:
Quartz and teflon filter media were evaluated under controlled use conditions to determine their suitability for ambient particulate measurements. Weighing tests and handling tests were conducted in a laboratory environment. A field comparison test in which samples were collected on glass, quartz, and teflon filters was conducted at a typical air quality monitoring site. Total suspended particulate, nitrate, and sulfate concentrations measured during the field comparison test using quartz and teflon filters on high-volume samplers were lower than those measured using glass filters. Observed differences could be explained reasonably well by artifact effects and the aforementioned handling effects. Teflon filters showed a tendency to clog at ambient total suspended particulate concentrations around 75 microgram/cu m.