食品科学 ›› 2012, Vol. 33 ›› Issue (6): 199-202.doi: 10.7506/spkx1002-6630-201206043

• 分析检测 • 上一篇    下一篇

金针菇中6种拟除虫菊酯类农药多残留的测定

樊中臣1,施艳红2,花日茂2,岳永德3,汤 锋3,操海群1,*   

  1. 1.安徽农业大学植物保护学院,安徽省农产品安全重点实验室 2.安徽农业大学资源与环境学院,安徽省农产品安全重点实验室 3.国际竹藤网络中心
  • 出版日期:2012-03-25 发布日期:2012-03-03
  • 基金资助:
    国家林业公益性行业科研专项(200804014);安徽省优秀青年科技基金项目(10040606Y01)

Multiresidue Determination of 6 Pyrethroid Pesticides in Flammulina velutipes

FAN Zhong-chen1,SHI Yan-hong2,HUA Ri-mao2,YUE Yong-de3,TANG Feng3,CAO Hai-qun1,*   

  1. (1. Key Laboratory of Agri-food Safety of Anhui Province, College of Plant Protection, Anhui Agricultural University, Hefei 230036, China;2. Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China;3. International Centre for Bamboo and Rattan, Beijing 100080, China)
  • Online:2012-03-25 Published:2012-03-03

摘要: 建立联苯菊酯、甲氰菊酯、高效氯氟氰菊酯、高效氯氰菊酯、氰戊菊酯和溴氰菊酯6种拟除虫菊酯类农药在金针菇中的多残留分析方法。样品以乙腈为提取溶剂,弗罗里硅土柱层析净化,气相色谱-电子捕获法测定。该检测条件下,联苯菊酯、甲氰菊酯和高效氯氟氰菊酯在0.005~0.50mg/L、高效氯氰菊酯、氰戊菊酯和溴氰菊酯在0.01~1.00mg/L的范围内具有良好的线性关系,线性方程的决定系数大于0.996。添加回收实验结果表明,供试农药在添加量范围平均回收率为85.54%~102.27%,变异系数为1.24%~9.58%,联苯菊酯、甲氰菊酯和高效氯氟氰菊酯的最低检测限为5μg/L,高效氯氰菊酯、氰戊菊酯和溴氰菊酯的最低检测限为10μg/kg。该方法的准确性、精确性和灵敏度均满足农药残留分析的要求。

关键词: 金针菇, 拟除虫菊酯, 农药残留, 气相色谱

Abstract: A method was developed for the multiresidue determination of 6 pyrethroid pesticides in Flammulina velutipes by gas chromatography with electron capture detection. Samples were extracted with acetonitrile and cleaned up on a florisil column before GC-ECD analysis. A good linear relationship with a determination coefficient above 0.996 was found for bifenthrin, fenpropathrin and lambda-cyhalothrin in the range of 0.005-0.5 mg/L and for other three pyrethroid pesticides in the range of 0.01-1.0 mg/L. The mean recoveries for the 6 pyrethroid pesticides ranged from 85.54% to 102.27% in a blank sample of Flammulina velutipes with a relative standard deviation (RSD) between 1.24% and 9.58%. The limit of detection was 5μg/L for bifenthrin, fenpropathrin and cyhalothrin and 10μg/kg for beta-cypermethrin, fenvalerate and deltamethrin. The method was accurate, precise and sensitive, and therefore could meet the requirements for pesticide residue analysis.

Key words: Flammulina velutipes, pyrethroids, pesticide residue, gas chromatography

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