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SW-846 Test Method 8440: Total Recoverable Petroleum Hydrocarbons by Infrared Spectrophotometry

The following document discusses the method for the measurement of total recoverable petroleum hydrocarbons (TRPHs) extracted with supercritical carbon dioxide from sediment, soil and sludge samples.

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Method 8440: Total Recoverable Petroleum Hydrocarbons by Infrared Spectrophotometry, part of Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (PDF)(8 pp, 46 K, December 1996)