湖北农业科学 ›› 2018, Vol. 57 ›› Issue (21): 112-114.doi: 10.14088/j.cnki.issn0439-8114.2018.21.028

• 检测分析 • 上一篇    下一篇

快速检测蔬菜中有机磷和氨基甲酸酯类农药残留方法的优化

胡明燕1, 车明秀1, 张艳2, 王骏1   

  1. 1.山东省食品药品检验研究院,济南 250103;
    2.济南市历城区食品药品监督管理局,济南 250100
  • 收稿日期:2018-04-16 出版日期:2018-11-10 发布日期:2020-01-13
  • 通讯作者: 王 骏(1972-),男,研究员,主要从事食品检测、食品相关标准制定、食品加工等工作,(电子信箱)sdzjywj@163.com。
  • 作者简介:胡明燕(1980-),女,山东无棣人,高级工程师,硕士,主要从事食品检测、食品相关标准制定、食品加工等工作,(电话)15820015917(电子信箱)yanyan1207@sina.com

The Optimization of Acetylcholinesterase-Spectrophotometry for Determination of Organophosphate and Carbamate Pesticide Residues in Vegetables

HU Ming-yan1, CHE Ming-xiu1, ZHANG Yan2, WANG Jun1   

  1. 1.Shandong Institute for Food and Drug Control,Jinan 250103,China;
    2.Licheng Direct Food and Drug Administration of Jinan City,Jinan 250100,China
  • Received:2018-04-16 Online:2018-11-10 Published:2020-01-13

摘要: 乙酰胆碱酯酶抑制-分光光度法是目前监管中应用最为广泛的快速筛查蔬菜中有机磷和氨基甲酸酯类农药残留的快速检测方法。对该方法进行了多项条件的优化,结果表明,酶活性ΔA0控制在0.2~0.3时,抑制率能真实反映样品阳性结果;孵育温度是影响结果精密度的重要因素,部分仪器自带恒温装置的温控稳定性较差,比色槽温度变化较大,导致反应结果的平行性和重现性较差,试样在恒温水浴锅中的反应结果重现性很好;配制标准溶液时,应将丙酮含量控制在≤1%时,丙酮对试验的影响可以忽略。

关键词: 有机磷, 氨基甲酸酯, 农药残留快速检测, 乙酰胆碱酯酶抑制-分光光度法

Abstract: Acetylcholinesterase-spectrophotometry is the most widely used method for rapid detection of organophosphorus and carbamate pesticide residues in vegetables. However,in practical application,the method is seriously limited by numerous peripheral influencing factors and low accuracy. The optimization of Acetylcholinesterase-Spectrophotometry for determination of organophosphate and carbamate pesticide residues in vegetables were studied in this paper.Controlling the ΔA value between 0.2~0.3 and its results were given,which could improve the accuracy of positive test results. Extra thermostatic bath was chosen instead of device came with instrument and the results showed greatly improved reproducibility and parallelism. In order to avoid the influence of acetone on enzyme activity,the added amount of acetone should be controlled less than 1% when preparing standard solution.

Key words: organophosphate, carbamate pesticide residues, rapid detection, acetylcholinesterase

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