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Electron Donor-Acceptor Reagents in the Analysis of Pesticides. VII. A Simple Model System Hydrolysis of Some Carbamate Pesticides,
NATIONAL RESEARCH COUNCIL OF CANADA HALIFAX (NOVA SCOTIA) ATLANTIC REGIONAL LAB
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The decomposition of the carbamate insecticides carbaryl 1-naphthyl-N-methylcarbamate and Mobam 4-benzothienyl-N-methylcarbamate and the herbicides IPC isopropyl-N-phenylcarbamate and CIPC isopropyl-N-13-chlorophenyl carbamate in water at various pHs was investigated. Analyses were performed in situ on silica-gel thin-layer chromatograms by reflectance spectroscopy after the developed chromatograms had been sprayed with the reagent CNTNF 9-dicyanomethylene-2,4,7-, trinitrofluorene to form visible pi-complexes of the pesticides. Carbaryl and Mobam decomposed rapidly at basic pHs but were stable in acid. IPC and CIPC were stable in water at pHs tested. Author
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