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SAMPLING AND ANALYSIS OF PCDDS AND PCDFS IN STATIONARY SOURCE EMISSION AIR SAMPLES
Citation:
Pau, J., J. Knoll, AND M. Midgett. SAMPLING AND ANALYSIS OF PCDDS AND PCDFS IN STATIONARY SOURCE EMISSION AIR SAMPLES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-92/132 (NTIS PB92166677).
Description:
Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzo-furans (PCDFs) are two classes of extremely toxic compounds produced and emitted into the environment as a result of combustion processes. lthough no standard method for sampling or analysis of PCDDs and PCDFs currently exists, a method was drafted in 1984 for this purpose at an Environmental Standards Workshop sponsored by the American Society of Mechanical Engineers (ASME), Department of Energy, and U.S Environmental Protection Agency (EPA). ith this method, a Modified Method 5 (MM5) sampling train is used to collect samples for subsequent analysis by gas chromatography/mass spectrometry (GC/MS). his "dioxin" method has been used during the U.S EPA National Dioxin Study program for sampling and analysis of the combustion effluents from incineration processes. alidation of this stack sampling technique and the overall analytical method was needed to ensure the quality of the analytical data collected by use Of this method. he overall method precision and accuracy also needed to be documented. e conducted a program to further develop and validate this method, and we evaluated the precision and accuracy in our study. he correct operational conditions and the QA criteria are presented in this article.