Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Korea.
Molecules. 2021 Sep 24;26(19):5791. doi: 10.3390/molecules26195791.
Pesticides in livestock products must be measured to ensure food safety. We developed a single-sample preparation method followed by liquid chromatography-tandem mass spectrometry (LC-MS/MS) for simultaneous determination of fenpropimorph and fenpropimorph acid in six different livestock products. The extraction method was a modification of the quick, easy, cheap, effective, rugged, and safe (QuEChERS) method and was validated according to the CODEX guidelines. The matrix-matched calibration curves for fenpropimorph and fenpropimorph acid exhibited good linearity, with coefficients of determination (R values) higher than 0.998. The limit of detection (LOD) and the limit of quantitation (LOQ) were 1.25 and 5.0 µg kg, respectively. The average recovery values ranged from 61.5% to 97.1% for samples fortified to the LOQ, 2 × LOQ, and 10 × LOQ. The method fully complied with the CODEX guidelines and was successfully applied to real samples obtained from domestic markets.
必须对畜产品中的农药残留进行检测，以确保食品安全。我们建立了一种单一样品前处理方法，结合液相色谱-串联质谱（LC-MS/MS），可以同时检测六种不同畜产品中的烯丙苯噻唑和烯丙苯噻唑酸。该提取方法是对 QuEChERS 方法的改进，并按照 CODEX 准则进行了验证。烯丙苯噻唑和烯丙苯噻唑酸的基质匹配校准曲线具有良好的线性，决定系数（R 值）均高于 0.998。检测限（LOD）和定量限（LOQ）分别为 1.25 和 5.0 µg kg。对于添加到 LOQ、2×LOQ 和 10×LOQ 的样品，平均回收率范围为 61.5%至 97.1%。该方法完全符合 CODEX 准则，并成功应用于从国内市场获得的实际样品。
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