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View Actual EPA Method 0040 (PDF File)
EPA Method 0040:SAMPLING OF PRINCIPAL ORGANIC HAZARDOUS CONSTITUENTS FROM COMBUSTION SOURCES USING TEDLAR? BAGS
Summary:This method establishes standardized test conditions and sample handling procedures for the collection of volatile organic compounds collected from effluent gas samples from stationary sources, such as hazardous waste incinerators and other combustion sources, using time-integrated evacuated Tedlar? bags.
Scope:A representative sample is drawn from a source through a heated sample probe and filter. The sample then passes through a heated 3-way valve and into a condenser where the moisture and condensable components are removed from the gas stream and collected in a trap. The sample is collected in a Tedlar? bag held in a rigid, air-tight opaque container. The dry gas sample and the corresponding condensate are then transported together to a GC/MS. A mass spectrometer is most suited for the analysis and quantitation of complex mixtures of volatile organic compounds. The total amount of the analyte in the sample is determined by summing the individual amounts in the bag and condensate. A flow chart of the procedure is given at the end of this method.