食品科学 ›› 2005, Vol. 26 ›› Issue (1): 183-186.

• 分析检测 • 上一篇    下一篇

大米中有机磷和有机氮类农药的多残留分析技术

 赵卫星, 龚道新, 杨仁斌, 郭正元, 邹雅竹   

  1. 湖南农业大学农业环境保护研究所; 湖南农业大学农业环境保护研究所
  • 出版日期:2005-01-15 发布日期:2011-09-19

Multiresidue Determination of Organophosphorous Pesticides and Organonitrogen Pesticides in Rice by Gas Chromatography

 ZHAO  Wei-Xing, GONG  Dao-Xin, YANG  Ren-Bin, GUO  Zheng-Yuan, ZOU  Ya-Zhu   

  1. Institute of Agro-Environmental Protection,Hunan Agricultural University
  • Online:2005-01-15 Published:2011-09-19

摘要: 根据长期的调查和实际研究,选用甲胺磷、乐果等22种常用的有机磷、有机氮类农药,运用高效气相色谱仪筛选优化出了一种能同时检测大米中22种农药残留量的分析检测方法。结果表明该方法分离度高,线性范围较宽,方法的最小检出量为5.18×10-12~8.541×10-11g,添加回收率为73.04%~109.16%,变异系数为1.16%~12.58%,完全符合农药残留量检测的技术要求,是一种快速可行的分析检测方法,可在生产实际中应用。

关键词: 有机磷, 有机氮, 农药多残留, 气相色谱, 大米

Abstract: According to the investigation and practical study, Methamidophos and Oimethoate etc. 22 commonly used organonitrogen pesticides and organophosphorous pesticides were selected. A method was optimized to detect 22 pesticides residue in rice by GC.The results showed that the minimum detection limits were from 5.18×10-12g to 8.541×10-11g with high separated degree and wide linear relation. The results indicated that the recoveries were from 73.04% to 109.16% and coefficients of variation range in 1.16%~12.58%. The method was a quick and practical analysis detection method ,meeting to the requirement of residue determination of pesticides completely .So the method could be applied to practice.

Key words: organophosphorous pesticide, organonitrogen pesticide, pesticide multiresidue, gas chromatogram, rice