Determination of fluvalinate metabolite residues in cottonseed, apples, tomatoes, and soil

Determination of fluvalinate metabolite residues in cottonseed, apples, tomatoes, and soil

1988

A:PS

Fluvalinate is the active ingredient in Mavrik and Spur insecticides used to control insects on numerous field crops. Radiolabel experiments have shown that the residue of concern in most crops is the parent molecule. However, an analytical method was needed to determine the major hydrolytic metabolites of fluvalinate, 3-phenoxybenzoic acid (PBA) and 2-[2-chloro-4-(trifluoromethyl)anilino]-3-methylbutanoic acid (CAA), in selected crops. The method entails standard extraction and partition steps, basic hydrolysis to free conjugated metabolites, conversion to methyl esters, and determination by capillary gas chromatography/mass spectrometry. The methods were validated for the title crops with detection limits of 0.02 and 0.05 ppm, respectively, for CAA and PBA. [AS]

v.36(4):764-766, JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

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