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초록

This study aimed to improve the speed and accuracy of imidacloprid assays.
Vegetables were assessed for imidacloprid contamination using the multi class pesticide
multi-residue method(Ⅱ), QuEChERS method, the multi-residue method, and LC-MS/MS.
Standard calibration curves were produced based on matched matrix standards and the
associated correlation coefficients were each higher than 0.999. Recovery studies were
carried out using seven spiked vegetables and two contaminant concentrations(0.04 and
0.4 mg/kg). The recovery of the multi class pesticide multi-residue method(Ⅱ) was 16.9
∼96.3% and that of the multi-residue method was 23.6∼52.2%. In addition, the
recovery of the QuEChERS method was 92.7∼112.4% with  5% RSD. These results
suggest that the QuEChERS method and LC-MS/MS were most suitable for use in
imidacloprid analyses.