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KMID : 0881720210360030228
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Journal of Food Hygiene and Safety
2021 Volume.36 No. 3 p.228 ~ p.238
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Development and Validation of a Simultaneous Analytical Method for 5 Residual Pesticides in Agricultural Products using GC-MS/MS
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Park Eun-Ji
Kim Nam-Young
Shim Jae-Han
Lee Jung-Mi
Jung Yong-Hyun
Oh Jae-Ho
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Abstract
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The aim of this research was to develop a rapid and easy multi-residue method for determining dimethipin, omethoate, dimethipin, chlorfenvinphos and azinphos-methyl in agricultural products (hulled rice, potato, soybean, mandarin and green pepper). Samples were prepared using QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) and analyzed using gas chromatography-tandem mass spectrometry (GC-MS/MS). Residual pesticides were extracted with 1% acetic acid in acetonitrile followed by addition of anhydrous magnesium sulfate (MgSO4) and anhydrous sodium acetate. The extracts were cleaned up using MgSO4, primary secondary amine (PSA) and octadecyl (C18). The linearity of the calibration curves, which waas excellent by matrix-matched standards, ranged from 0.005 mg/kg to 0.3 mg/kg and yielded the coefficients of determination (R2) ≥ 0.9934 for all analytes. Average recoveries spiked at three levels (0.01, 0.1, 0.5 mg/kg) and were in the range of 74.2-119.3%, while standard deviation values were less than 14.6%, which is below the Codex guideline (CODEX CAC/GL 40).
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KEYWORD
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Pesticide, Agricultural products, Analytical method, GC-MS/MS, QuEChERS
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