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Analysis of Dimethoate and Omethoate Metabolites Method Development and Pilot Monitoring

A QuPPe-based method for the analysis of the following 6 main metabolites of dimethoate was developed.

A total of 1778 samples were analyzed for dimethoate, omethoate using QuEChERS and for the 6 polar metabolites using QuPPe. 98 samples (5.5 % overall) were found to contain dimethoate-related residues. Their residue profiles revealed that in all cases dimethoate was employed in the field. Metabolite X was contained in all these 98 samples, exceeding in 39 cases 0.01 mg/kg. In contrast, dimethoate and omethoate exceeded 0.01 mg/kg only in 3 and 4 cases respectively. Based on these results it seems worthwhile considering the inclusion of Metabolite X (O-desmethyl-dimethoate) as an additional marker for controlling the proper use of dimethoate. 

 

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Analysis of Dimethoate and Omethoate Metabolites – Method Development and Pilot Monitoring

 

Further Information

List of EURL-SRM Observations.

 

Last modified 11-05-2021, 12:10:49

Published 19-05-2019, 07:36:57

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