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EVALUATION OF POHC AND PIC SCREENING METHODS
Citation:
Adams, R., R. James, AND D. Weinberg. EVALUATION OF POHC AND PIC SCREENING METHODS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-93/004.
Description:
A recurring theme in environmental work is the need to characterize emissions to the maximum extent at the minimum cost. Unfortunately, many projects have been carried out In the past with little thought or planning concerning the optimum application of analytical methods available. ven worse, many of the analysis data taken have been subjected to only cursory interpretation. his report represents the latest in a series of projects designed to improve our ability to plan, execute, and interpret survey analyses or screenIng characterization of environmental source samples. he application of a tiered approach to the analysis of source emission samples was evaluated for the semi-volatile and non-volatile organic compounds. he analyses supported the proposed applications of a tiered approach for screening combustion effluents. f it is known that most of the toxic compounds of interest are present in the 100-300 degrees C boiling range then gas chromatography coupled with mass spectrometry (GC/MS) analysis will provide specific details and gravimetric analysis by the GRAV procedure described in the report will give an indication of the amount of high boiling non-volatile material present. lternately screening of the extract by the total chromatographable organics procedure (TCO) and GRAV may be sufficient for the characterization of material in the sample, but high performance liquid chromatography with ultraviolet detection (HPLC/UV) may be needed for the analyses of target principle organic hazardous constituents (POHCs). hen products of incomplete combustion (PICs) are to be determined, a chromatographic procedure combined with mass spectrometry will probably be required.