EPA Method 3546

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EPA Method 3546:
MICROWAVE EXTRACTION

Summary:
Samples are prepared for extraction by grinding them to a powder and loading them into the extraction vessel.

Scope:
This method is a procedure for extracting water insoluble or slightly water soluble organic compounds from soils, clays, sediments, sludges, and solid wastes. This method was developed and validated on commercially-available solvent extraction systems. Its procedure uses microwave energy to produce elevated temperature and pressure conditions (i.e., 100 - 115 EC and 50 - 175 psi) in a closed vessel containing the sample and organic solvent(s) to achieve analyte recoveries equivalent to those from Soxhlet extraction (Method 3540), using less solvent and taking significantly less time than the Soxhlet procedure. Other systems and other types of vessels may be used, provided that the analyst demonstrates appropriate performance for the specific application.

Report Number:
SW-846 www