Abstract
This paper describes a simplified high-performance liquid chromatography method without clean-up step for the determination of abamectin residue in non-fatty vegetables and fruits. The abamectin residues were extracted efficiently with acetonitrile assisting by ultrasound and then directly derivatized without requiring the clean-up step. Results showed that the developed method has good sensitivity and selectivity for determining the abamectin residues in vegetables and fruits. Limits of detection and limits of quantification were 0.0005 and 0.002 μg/g, respectively. The recoveries ranged from 83.2% to 123.7% with satisfactory precision (RSD < 16.7%) and bias (−16.8 ∼ 23.7%). The proposed method was successfully applied to analyze the real commercial samples.
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