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NATIONAL PERFORMANCE AUDIT PROGRAM AMBIENT AIR AUDITS OF ANALYTICAL PROFICIENCY - 1984
Citation:
Parr, B., R. Lampe, G. Pratt, O. Dowler, AND W. Mitchell. NATIONAL PERFORMANCE AUDIT PROGRAM AMBIENT AIR AUDITS OF ANALYTICAL PROFICIENCY - 1984. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/4-86/013 (NTIS PB86169968), 1986.
Description:
The report presents the results of the U.S. Environmental Protection Agency's 1984 National Audit Program by pollutant and by analytical method. Semiannual audits were conducted for Pb, NO3 and SO4 (filter strips) and one audit was conducted for SO2 (bubbler), NO2 (bubbler), CO and high volume flow rate. Continuous SO2 monitors were audited throughout the year, such that no monitor was audited more than once. Approximately 30 laboratories participated in each semiannual acid rain audit. Twenty laboratories participated in the SO2 bubbler audit, and 21 in the NO2 audit, a 20% decrease from 1983. Approximately 55 laboratories participated in each NO3 and SO4 audit and approximately 100 laboratories in each Pb audit. Three hundred and thirty CO monitors, 221 SO2 monitors and 1402 high volume flow samplers were also audited. The results for each 1984 audit are presented in tabular form for each concentration level. The overall performance for all participants for each audit conducted since the beginning of the program is also illustrated in a series of figures.