中文摘要：本文开发了一个在特定离子监测模式下采用气相色谱-质谱法对玉米粉中八种除草剂进行简单高效检测的程序。采用QuEChERS方法制备样本并对萃取溶剂种类、体积、吸附剂种类和用量、超声处理时间进行优化。结果显示，平均回收率为85%-108%，相对标准差小于15%，定量限范围为4-48ng/g。因此，该方法可应用于玉米粉除草剂残留检测。
外文摘要：A simple and efficient procedure was developed to determine eight herbicides in corn flour by gas chromatography-mass spectrometry in selected ion-monitoring mode. Samples were prepared with a modified,quick, easy, rapid, effective, rugged, and safe procedure. The type and volume of extraction solvent, type and amount of adsorbent, and time of sonication were optimized. The protocol method was rigorously verified. The mean recoveries were from 85 to 108% at various fortification levels with relative standard deviations below 15% and limits of quantification from 4 to 48 ng g(-1). The method was used to determine herbicides in corn flour.
 
外文关键词：Corn flour, extraction, gas chromatography-mass spectrometry, herbicides
作者：Xia, Gao-Feng; Fang, Xu-Yuan; Wang, Ya-Ru; Yang, Xiao-Yun
作者单位：South China Agr Univ, Minist Educ, Key Lab Nat Pesticide & Chem Biol, Guangzhou 510642, Guangdong, Peoples R China.
期刊名称：ANALYTICAL LETTERS
期刊影响因子：1.088
出版年份：2017
出版刊次：5
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