Determination of Carbamate and Benzoylurea Insecticides in Peach Juice Drink by Floated Organic Drop Microextraction-High Performance Liquid Chromatography

Floated organic drop microextraction (FDME)-high performance liquid chromatography (HPLC) has been developed for extraction and determination of carbamate and benzoylurea insecticide residues from peach juice drink samples. The components were separated by a Diamonsil C18 instrument (5 mu m, 250mmx4.6mm i.d.). The mobile phase was a mixture of acetonitrile, methanol, and water (the ratio of volume was 18:70:12). Factors relevant to the extraction efficiency were studied and optimized. The methodology exhibited good linearity between 0.01 and 10.0 mu g/mL with a correlation coefficiency of 0.9999. The average recovery of pesticides ranged from 88.49% to 101.86%. The relative standard deviations (RSDs) (n=6) were 1.99-3.47%.