食品科学 ›› 2006, Vol. 27 ›› Issue (8): 221-223.

• 分析检测 • 上一篇    下一篇

简化二维气相色谱法分析蔬菜中农药多种残留

 陈树兵, 俞美香, 杨云霞,  单正军,  胡秋辉   

  1. 南京农业大学食品科技学院; 江苏省环境监测中心; 北京商贸学校; 国家环保总局南京环境科学研究所;
  • 出版日期:2006-08-15 发布日期:2011-10-14

Determination of Pesticide Multi-reidues in Vegetables by Means of Simplified Two-dimension GC

 CHEN  Shu-Bing, YU  Mei-Xiang, YANG  Yun-Xia,   Dan-Zheng-Jun,   Hu-Qiu-Hui   

  1. 1.College of Food Science and Technology,Nanjing Agricultural University,Nanjing 210095,China;2.Ningbo Entry-exit Inspection and Quarantine Bureau,Ningbo 315012,China;3.Beijing Commerce and Trade School,Beijing 100076,China;4.Jiangsu Environmental Monitoring Center,Nanjing 210036,China;5.Institute of Environmental Sciences,State Environmental Protection Administration,Nanjing 210042,China
  • Online:2006-08-15 Published:2011-10-14

摘要: 本试验研究建立了简化二维气相色谱法测定蔬菜中5种农药(β-六六六、p,p’-DDE、乙草胺、氟乐灵、毒死蜱)残留的提取、净化和简化二维气相色谱分析条件。蔬菜样品粉碎后加入无水硫酸钠研磨至无水分,加入50ml重蒸石油醚:丙酮(9:1)超声提取后经固相萃取净化处理后上机检测。5种农药标准曲线的相关系数(r)为0.9952~0.9991,在0.010~0.050mg/L浓度范围内,回收率为81.5%~91.8%,变异系数为5.7%~11.2%,检测限为0.010~0.055mg/L。

关键词:  , 简化二维气相色谱, 蔬菜, 农药, 多残留

Abstract: Determination of pesticide residues(β-HCH,p,p’-DDE,acetochlor,trifluralin,chlorpyrifos)in vegetables by means of simplified two-dimension GC was described in this paper.The vegetable samples were ultrasonically extracted with petroleun ether:acetone(9:1),and cleaned up by a Florisil column solid phase extraction(SPE).The calibration curves for the five pesticides are linear in a concentration range of 0.010~0.20mg/L(r=0.9952~0.9991).The recoveries at levels of 0.01~0.05mg/ kg fortified samples range from 81.5%~91.8%,with coefficient of variation of 5.7%~11.2%.The limits of detection are in the range of 0.010~0.055mg/L.

Key words: simplified gas chromatography, vegetable, pesticide, residue