High pressure liquid chromatographic determination of methomyl and oxamyl on vegetable crops.
A reverse phase high pressure liquid chromatographic method is presented for the separation and determination of residues of the carbamates oxamyl and methomyl on vegetables. A liquid-liquid extraction and cleanup procedure is applied to the vegetable extract. Samples are eluted from a muBondapak C18 column and quantitated by ultraviolet absorbance at 240 nm. Recovery data for vegetable samples spiked at 2 ppm are presented.
D002219:Carbamates; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006877:Hydroxamic Acids / Q000032:analysis; D007306:Insecticides / Q000032:analysis*; D008724:Methomyl / Q000032:analysis*; D014675:Vegetables / Q000032:analysis*
D002219:Carbamates; D006877:Hydroxamic Acids; D007306:Insecticides; D008724:Methomyl; C011960:oxamyl