Determination of Carbaryl in Pesticide Formulations and Fertilizers by High-Pressure Liquid Chromatography

Abstract

A simple and rapid method is described for the determination of carbaryl in pesticide formulations by high-speed liquid chromatography. Carbaryl is extracted with 10% methanol in chloroform and pentachlorophenol is added as an internal standard. The sample extract is injected into a liquid chromatograph, and peak height ratios are used for quantitative measurement. Chromatography is complete in 8 min. The method compares favorably with infrared, near infrared, and colorimetric procedures for carbaryl.