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, 59 (4), 859-61

Gas-liquid Chromatographic Determination of Alachlor (2-chloro-2', 6'-diethyl-N-(methoxymethyl)-acetanilide) Herbicide Residues in Corn and Soybeans

  • PMID: 945801

Gas-liquid Chromatographic Determination of Alachlor (2-chloro-2', 6'-diethyl-N-(methoxymethyl)-acetanilide) Herbicide Residues in Corn and Soybeans

B D Ammann et al. J Assoc Off Anal Chem.

Abstract

A method has been developed for the extraction and determination of alachlor (2-chloro-2',6'-diethyl-N- (methoxymethyl)-acetanilide) residues in green corn and soybeans. Residues are extracted with acetonitrile and cleaned up on a Florisil column. The methylene chloride extract is sufficiently clean for electron capture gas-liquid chromatographic analysis and for verification by thin layer chromatography. Average recoveries of spiked samples (0.2 ppm) were 69 and 82% for corn and soybeans, respectively. This procedure could be useful for the detection of the parent compound in these crops soon after field application, but it does not detect metabolites.

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