EPA Method 637

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EPA Method 637:
The Determination of MBTS and TCMTB in Municipal and Industrial Wastewaters

A measured volume of sample, approximately 1 L, is extracted with methylene chloride using a separatory funnel. The methylene chloride extract is dried and concentrated to 5.0 mL. Liquid chromatographic conditions are described which permit the separation and measurement of the compounds in the extract by high-performance liquid chromatography with ultraviolet detection.

This method covers the determination of MBTS and TCMTB pesticides.

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