Summary
A gas chromatograph/mass selective detector method is presented for the analysis of the major metabolic residues of metolachlor by acid hydrolysis of tomato fruit. The two major hydrolysis products, CGA-37913 (2-[2-ethyl-6-methylphenyl]amino-1-propanol) and derivatised CGA-49751 (4-[2-ethyl-6-methylphenyl]-2-hydroxy-5-methyl-3-morpholinone) were monitored in the selective ion mode atm/z 162 andm/z 160, respectively. Recoveries from 87 to 96% were obtained for tomato fortified at 50 to 200μg kg−1. The proposed method of analysis will allow for a detection limit of 11 μg kg−1 for CGA-37913 and 12 μg kg−1 for the derivatised CGA-49751.
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Gaynor, J.D., MacTavish, D.C. & Hamill, A.S. GC/MSD detection of the metabolic residues of metolachlor in tomato fruit. Chromatographia 33, 147–150 (1992). https://doi.org/10.1007/BF02275895
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DOI: https://doi.org/10.1007/BF02275895