title: Gas-liquid chromatographic determination of alachlor (2-chloro-2', 6'-diethyl-N-(methoxymethyl)-acetanilide) herbicide residues in corn and soybeans.
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.
mesh_terms: D000083:Acetanilides / Q000031:analogs & derivatives* / Q000032:analysis; D002849:Chromatography, Gas / Q000379:methods; D006540:Herbicides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D013025:Glycine max / Q000032:analysis*; D003313:Zea mays / Q000032:analysis*
chemical_list: D000083:Acetanilides; D006540:Herbicides; D010573:Pesticide Residues