A rapid and simple analytical method for triflumezopyrim, a new class of mesoionic insecticides and commercialized molecules from DuPont, was developed with a modified QuEChERS method. The pH adjustment was used to improve the extraction efficiency of acetonitrile solvent, and dispersive solid-phase extraction was employed for the clean-up process. The five selected food commodities were used to verify the present optimized method, which displayed good linearity with an excellent correlation coefficient (R2=0.9992-0.9998) in the 0.003-0.30 mg/kg calibration range. The method limits of detection (LOD) and quantification (LOQ) were determined to be a value of 0.003 and 0.01 mg/kg, respectively. The mean recovery for the triflumezopyrim was in the 89.7-104.3% range. The relative standard deviations were ≤9.8% for intra-(n=5) and inter-day (n=15) precisions at concentrations of 0.01, 0.1, and 0.5 mg/kg in the five representative samples. The matrix effect has been calculated to confirm...
Determination of residual triflumezopyrim insecticide in agricultural products through a modified QuEChERS method.
Sang-Soon Yun, Food Safety Evaluation Department, Pesticide and Veterinary Drug Residues Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju 28159, Korea. Tel. +82-43-719-4211. E-mail email@example.com
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Sung-Min Cho, Han-Sol Lee, Ji-Su Park, Su-Jung Lee, Hye-Sun Shin, Yun-Mi Chung, Ha-Na Choi, Yong-Hyun Jung, Jae-Ho Oh, Sang-Soon Yun; Determination of residual triflumezopyrim insecticide in agricultural products through a modified QuEChERS method.. IFIS Food and Health Sciences Database 2022; doi:
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