QuEChERS-HPLC-MS/MS法測(cè)定植物油中5種農(nóng)藥殘留

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Determination of Five Pesticide Residues in Plant Oil by QuEChERS-HPLC-MS/MSMethod

FUWeina

（GRGMetrology& Test （Shenyang） Co.，Ltd.， Shenyang11oooo，China）

Abstract： This article establishes a detection method for the determination offive pesticide residues in plant oil，namely pentachlorophenol，acaricide，mycophenolate，glyphosate，and cypermethrin，by using QuEChERS pretreatment technology and combining it with high performance liquid chromatography-tandem mass spectrometry （HPLC-MS/MS）.The sample was extracted with acetonitrile and subjected to successive treatment steps such as water removal and purification.HPLC-MS/MS was used for determination.The results showed that the five compounds had a good linear relationship between 2ng?mL-1 to 50ng?mL-1 ，with correlation coefficients all greater than 0.99. Three levels of concentrations were added to different types of vegetable oils for validation experiments，with a average recovery rate of 68.4% to 85.5% and a relative standard deviation of 2.1% to 7.0% .The validation results of this method met the standard requirements and are suitable for quantitative analysis offive pesticide residues in vegetable oils，namely pentachlorophenol，acaricinolol，mycophenolate mofetil， glyphosate，and glyphosate.

Keywords： QuEChERS; high performance liquid chromatography-tandem mass spectrometry; vegetable oils; pesticide residues

植物油是人們?nèi)粘Ｉ攀持胁豢苫蛉钡闹匾M成部分，包括大豆油、玉米油、花生油和菜籽油等，其可為人體提供必需的脂肪酸，促進(jìn)脂溶性維生素吸收，對(duì)維持人體健康有重要作用[1-2]。（剩余4789字）