New methods utilizing derivitization for determining Mancozeb and ETU were developed and successfully validated to replace the previously used CS<sub>2</sub> method.  All pertinent EPA, OECD, and SANCO guidelines were followed and applied.  These methods were implemented for analysis of soil, water, plant (barley, oat, potato, safflower, tobacco, wheat), and animal (bovine) matrices for analysis of both analytes.  All methods achieved acceptable recovery means with acceptable relative standard deviations (RSD), including one radiovalidation for ETU (in safflower).  After successful validation, certain methods were successfully transferred to other laboratories for use in field or ecotoxicology studies, while others were also transferred to another laboratory for Independent Laboratory Validations to confirm the methods’ efficacy.  Many of the methods were then performed in subsequent field trials for submission to the EPA.

Method development and validation for determination of mancozeb and its metabolite ETU via LC-MS/MS in soil, water, plant, and animal matrices

2019 Fall National Meeting

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