| 比色法快速测定小麦中福美双的残留量 |
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| 引用本文： | 李伟华,胡小宁,吕雪霞,杨张青. 比色法快速测定小麦中福美双的残留量[J]. 农药, 2011, 50(3) |
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| 作者姓名： | 李伟华 胡小宁 吕雪霞 杨张青 |
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| 作者单位： | 1. 河南农大迅捷测试技术有限公司,郑州,450002
2. 东华理工大学,化学生物与材料学院,江西,抚州,344000 |
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| 基金项目： | 国家科技部科技型中小企业创新基金项目(07C26214100634) |
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| 摘 要： | [目的]福美双是一种有机硫类保护性广谱杀菌剂,其测定方法主要有极谱法、高效液相色谱法、ELLSA法、紫外分光光度法等,这些方法操作步骤繁琐、分析速度慢、测试成本高,不适合基层检测单位使用。建立了一种快速测定小麦中福美双残留量的比色方法。[方法]首先用三氯甲烷提取样品中残留的福美双,然后用固体碘化亚铜处理,使Cu2+与福美双形成黄色的且溶于三氯甲烷的配合物二甲基二硫代氨基甲酸铜,于440 nm处进行测定,根据工作直线求得小麦中福美双的残留量。[结果]该方法的福美双标准溶液质量浓度在0.3~20 mg/L范围内呈良好线性关系,加标回收率在90%~110%之间,方法检测限为0.15 mg/kg,检测时间可控制在2 h以内。[结论]建立了一种快速测定小麦中福美双残留量的方法,该方法操作简便,测试速度快,成本低,便于基层单位监控、市场准入前的筛选或生产单位自控。
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| 关 键 词： | 福美双 铜 快速测定 |
Rapid Determination of Thiram Residues in Wheat by Colorimetry |
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| LI Wei-hua,HU Xiao-ning,LU Xue-xia,YANG Zhang-qing. Rapid Determination of Thiram Residues in Wheat by Colorimetry[J]. Pesticides, 2011, 50(3) |
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| Authors: | LI Wei-hua HU Xiao-ning LU Xue-xia YANG Zhang-qing |
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| Affiliation: | LI Wei-hua1,HU Xiao-ning1,Lu Xue-xia2,YANG Zhang-qing1(1.Henan Nongda Xunjie Measurement Technology Co.,Ltd.,Zhengzhou 450002,China,2.Faculty of Chemistry Biology and Material Science,East China Institute of Technology,Fuzhou 344000,Jiangxi,China) |
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| Abstract: | [Aims]Thiram is an organosulfur fungicide with broad spectrum and protective activity,and its detection methods mainly included Polarography,HPLC and ELISA method.However,these methods are unfittable for the grass-root units because of the tedious steps in operation,slow analysis and high cost.So in this paper,a rapid detection method of thiram residues in wheat was developed by using photoelectric colorimetric method.[Methods] The residual thiram in samples was firstly extracted by using chloroform as the ... |
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| Keywords: | thiram copper rapid determination |
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