甲胺磷离子选择性电极的研制及其在农药残留检测中的应用  

Preparation of Methamidophos Selective Electrode and Its Application in Detection of Pesticide Residue

作　　者：赵桂欣[1] 袁清香[2] 

机构地区：[1]南阳医学高等专科学校基础教研室,河南南阳473058 [2]河南工业大学化学工业职业学院化工系,河南郑州450042

出　　处：《广东化工》2008年第9期135-137,161,共4页Guangdong Chemical Industry

摘　　要：以四苯硼钠与甲胺磷在盐酸介质中生成的离子缔合物为电活性物质,首次研制出一种甲胺磷PVC涂层玻璃电极。并对该电极的响应机理及性能进行了研究。实验表明,该电极的Nernst响应范围为1×10-2～1×10-4(V/V),斜率为50.28 mV/pC。该电极响应迅速,重现性好,用于甲胺磷农药的测定,方法快速、准确,结果令人满意。A kind of glass electrode with PVC coating of methamidophos was prepared by electroactive substance of ion-association complex generated by sodium tetraphenylboron and methamidophos in hydrochloric acid medium. The results showed that the Nernst response of the electrode was 1× 10^-2 - 1 × 10^-4 （V/V）, the slope was 50.28 mV/pC. The electrode response speed was fast, recovery was better. When used in the detection of methamidophos pesticide, the method was fast, the result was satisfaction.

关 键 词：甲胺磷 离子选择性电极 农药残留 

分 类 号：O657.15[理学—分析化学]