EPA Method 631

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EPA Method 631:
The Determination of Benomyl and Carbendazim in Municipal and Industrial Wastewater

A measured volume of sample, approximately 1 L, is acidified if necessary to hydrolyze benomyl to carbendazim. The total carbendazim is extracted with methylene chloride using a separatory funnel. The extract is dried and exchanged to methanol during concentration to a volume of 10 mL or less. HPLC conditions are described which permit the separation and measurement of total carbendazim in the extract by HPLC with a UV detector.

This method covers the determination of benomyl and carbendazim.

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