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中国农学通报 ›› 2009, Vol. 25 ›› Issue (16): 250-254.

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

谷物及土壤中氟虫腈残留分析方法研究

赵孝宁,汤 锋,唐 俊,花日茂   

  • 收稿日期:2009-03-18 修回日期:2009-04-16 出版日期:2009-08-20 发布日期:2009-08-20

Development of a Method for Determination of Fipronil Residue in Cereal and Soil

Zhao Xiaoning, Tang Feng, Tang Jun, Hua Rimao   

  • Received:2009-03-18 Revised:2009-04-16 Online:2009-08-20 Published:2009-08-20

摘要: 本文报道了稻米、小麦、玉米等谷物及水稻秸秆和土壤中氟虫腈残留量检测方法。样品采用乙腈为提取溶剂,超声波振荡提取,谷物及秸秆提取液经柱层析净化,采用气相色谱电子俘获检测器检测。在0.01~0.5mg/kg的添加浓度范围内,氟虫腈的平均回收率在80.60%~99.66%之间,相对标准偏差低于9%,最小检测浓度为0.01mg/kg。方法的灵敏度与准确度符合农药残留分析要求。

关键词: 甘蔗, 甘蔗, 群体, 生理动态, 产量

Abstract: A method was developed to analysis residue of fipronil in cereal and soil. After acetonitrile was added, the samples were sonicated in an ultrasonic water bath and then centrifuged, filtered, and cleaned up by a column containing neutral alumina and active carbon, successive eluted by ethyl acetate /n-hexane (3:5,V/V). The pesticide residues were determined by gas chromatography with electron-capture detection. Recoveries at spiked concentrations between 0.01 to 0.5mg/kg were 80.60%~99.66% with RSDs less than 9%.The limit of detection was 0.01mg/kg. The sensitivity and accuracy of the proposed method were fit for analysis of pesticide residue in cereal and soil.