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METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED HYDROCARBONS IN MUNICIPAL SLUDGE
Citation:
Rodriguez, C., W. McMahon, AND R. Thomas. METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED HYDROCARBONS IN MUNICIPAL SLUDGE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-80/029.
Description:
The method provides a procedure for analysis of pesticides and PCB's in municipal sludge. The method includes extraction by a centrifuge technique of the chlorinated compounds from the sludge matrix; clean-up of the extract to remove interferences by sulfur precipitation as mercury sulfide, and by gel permeation of florisil chromatography; quantitation of the chlorinated compounds by an electron capture detector with GC chromatrography; and confirmation of the chlorinated compounds by GC/MS/computer. The method provides confirmation of single component pesticides at 0/3 mg of pesticide per Kg of sludges. The recommended extracting solvent is 15% methylene chloride, 2% acetone and 83% hexane.