Abstract
Abstract A simple and rapid gas-liquid chromatographic method is described for the quantitative determination of chlorpyrifos in liquid and granular formulations. The sample is extracted with benzene and equal amounts of sample and reference solution in the same concentration range are injected into a gas chromatograph equipped with an electron capture detector and an SE-30/Diatoport S column. Peak heights are used for quantitative measurements. The method has been applied successfully to laboratory-prepared and commercial samples.
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