食品科学 ›› 2011, Vol. 32 ›› Issue (10): 163-166.doi: 10.7506/spkx1002-6630-201110038

• 分析检测 • 上一篇    下一篇

气相色谱-四级杆质谱分析土壤和玉米中精异丙甲草胺和特丁津的残留

吴俊学,关文碧,王 晨,张红艳*   

  1. 中国农业大学理学院应用化学系
  • 出版日期:2011-05-25 发布日期:2011-04-08

Determination of S-metolachlor and Terbutylazine Residues in Soil and Corn by Gas Chromatography-Quadrupole Mass Spectrometry

WU Jun-xue,GUAN Wen-bi,WANG Chen,ZHANG Hong-yan*   

  1. Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
  • Online:2011-05-25 Published:2011-04-08

摘要: 建立气相色谱-质谱同时检测土壤和玉米中精异丙甲草胺和特丁津的残留分析方法。土壤和玉米样品各10.0g经10mL乙腈提取,50mg PSA净化,以气质联用选择离子定性和定量,操作简单,精密度好,准确度高。土壤、玉米中精异丙甲草胺和特丁津0.01、0.05、0.1mg/kg三个浓度的添加回收率均在90.4%~108.5%之间,变异系数在1.9%~5.3%之间。

关键词: 精异丙甲草胺, 特丁津, 气相色谱-质谱, 残留分析, 玉米, 土壤

Abstract: An internal standard method for the determination of S-metolachlor and terbutylazine residues in soil and corn by gas chromatography-quadrupole mass spectrometry was developed. S-metolachlor and terbutylazine were extracted with acetonitrile by vortex and cleaned-up with base sorbent (primary secondary amine exchange material- PSA). The recoveries of S-metolachlor and terbutylazine in soil and corn were between 90.4% and 108.5%, and the relative standard deviations (RSDs) were between 1.9% and 5.3%, respectively.

Key words: S-metolachlor, terbutylazine, gas chromatography-mass spectrometry, residue analysis, corn, soil

中图分类号: