农药学学报2016，Vol.18Issue(2)：268-272,5.DOI:10.16801/j.issn.1008-7303.2016.0036
气相色谱-串联质谱法快速检测玉米粉中乙草胺、异丙甲草胺和三唑酮残留
Simultaneous determination of acetochlor, metolachlor and triadimefon residue in corn flour by gas chromatography-tandem mass spectrometry
摘要
Abstract
A gas chromatography-tandem mass spectrometry (GC-MS/MS) method was established for the simultaneous determination of acetochlor, metolachlor and triadimefon residue in corn flour. The samples were extracted with acetonitrile for 3 h, and the upper acetonitrile layer was filtered with 0.22 μm nylon membrane.The samples were then determined by GC-MS/MS. The results showed that the calibration curve was linear in the range of 0.005-1.0 mg/L. The determination coefficients (R2) was higher than 0.999. When the spiked levels were 0.025, 0.050 and 0.25 mg/kg, the average recoveries of the three pesticides were between 95%-101%, with relative standard deviation (RSD) between 0.7% and 2.2% (n=6). The limits of quantitation (LOQ) for the three pesticides were 0.05, 0.05 and 0.2 μg/kg,respectively. This new method is accurate, sensitive, simple and suitable for the simultaneous determination of the above mentioned three pesticide residues in corn flour.关键词
气相色谱-串联质谱/玉米粉/乙草胺/异丙甲草胺/三唑酮/残留Key words
gas chromatography-tandem mass spectrometry/corn flour/acetochlor/metolachlor/triadimefon/residue分类
农业科技引用本文复制引用
叶倩,路大海,邓义才,黄健祥,骆冲..气相色谱-串联质谱法快速检测玉米粉中乙草胺、异丙甲草胺和三唑酮残留[J].农药学学报,2016,18(2):268-272,5.基金项目
国家农产品质量安全风险评估项目(GJFP201500102)；公益性行业(农业)科研专项(201303088) （GJFP201500102）
