食品科学 ›› 2010, Vol. 31 ›› Issue (18): 227-231.doi: 10.7506/spkx1002-6630-201018052

• 分析检测 • 上一篇    下一篇

5 种基质中19 种有机磷农药残留的基质固相分散- 气相色谱法测定

薛 平1,史惠娟2,杜利君1,林勤保2 ,*   

  1. 1.山西出入境检验检疫局;2.山西大学应用化学研究所
  • 收稿日期:2010-05-18 修回日期:2010-07-21 出版日期:2010-09-25 发布日期:2010-12-29
  • 通讯作者: 林勤保 E-mail:qblin@sxu.edu.cn
  • 基金资助:

    国家质检总局科技计划项目(2009IK164)

Determination of Organophosphorous Pesticide Residues by Matrix Solid-phase Dispersion-Gas Chromatography

XUE Ping1,SHI Hui-juan2,DU Li-jun1,LIN Qin-bao2,*   

  1. 1. Shanxi Extry-Exit Inspection and Quarantine Bureau, Taiyuan 030024, China;
    2. Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China
  • Received:2010-05-18 Revised:2010-07-21 Online:2010-09-25 Published:2010-12-29
  • Contact: LIN Qin-bao2,* E-mail:qblin@sxu.edu.cn

摘要:

采用基质固相分散法从5 种基质中(白菜、梨、鸡肉、玉米、紫甘蓝)提取、净化常见的19 种有机磷农药,用气相色谱- 火焰光度检测器(GC-FPD)进行检测。通过对基质固相分散的条件——吸附剂、吸附剂与样品的用量比、洗脱剂、洗脱体积进行优化,建立5 种基质中19 种有机磷农药残留分析的基质固相分散- 气相色谱(MSPD-GC)方法。利用所建立的方法进行3 个水平(0.01、0.02、0.05mg/kg)的加标回收实验。结果表明,除了添加水平为0.01mg/kg 时,乙拌磷、杀螟腈、水胺硫磷、硫线磷、三唑磷的回收率较差,其余有机磷农药中的回收率在75.0%~109.2% 之间,相对标准偏差小于16%,方法的回收率和相对标准差满足农药残留检测中准确度和精密度的要求。

关键词: 基质固相分散, 有机磷农药, 气相色谱

Abstract:

Matrix solid-phase dispersion technique was used to extract and purify nineteen kinds of organophosphorous pesticide residues from five matrixes such as cabbage, pear, chicken, corn and purple broccoli. The contents of organophoshorous pesticide residues were determined by gas chromatography with a flame photometric detector (FPD). Through the optimization of absorbent, eluent and elution volume, a preparation method for determining organophosphorous pesticide residues was established. The recovery rates of monocrophos, cyanophos, isocarvophos, cadusafos and triazophos in spiked samples at concentrations of 0.02 mg/kg and 0.05 mg/kg, were between 75.0% and 109.2% with a relative standard deviation (RSD) of lower than 16%. Therefore, this method is suitable for pesticide residue analysis.

Key words: matrix solid-phase dispersion (MSPD), organophosphorous pesticide, gas chromatography (GC)

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