黄瓜中敌敌畏残留的快速分析  

Determination of dichlorvos pesticide residues in cucumber

作　　者：晋晓苹 卢智敏 赵永福[2] JIN Xiaoping;LU Zhimin;ZHAO Yongfu(Henan Vocational College of Applied Technology,Zhengzhou 450052,Henan,China;Zhengzhou Normal University,Zhengzhou 450000,Henan,China)

机构地区：[1]河南应用技术职业学院,河南郑州450052 [2]郑州师范学院,河南郑州450000

出　　处：《化学研究》2019年第2期128-131,共4页Chemical Research

摘　　要：构建了一种十六烷基三甲基溴化铵/植物酯酶修饰玻碳电极测定敌敌畏的方法,植物酯酶可使乙酸-1-萘酯水解为1-萘酚,敌敌畏使植物酯酶的活性降低,根据1-萘酚氧化峰电流峰值的降低值,可对敌敌畏进行定量分析.在最优条件下,敌敌畏的线性范围为1.0×10^-9~1.0×10^-5mol·L^-1,检出限为3.0×10^-10mol·L^-1.An electrochemical detection of dichlorvos based on cetyltrimethylammonium bromide and Plant-Esterase modified glassy carbon electrode was demonstrated.The Plant-Esterase can hydrolyze the acetic acid-1-ester to 1-naphthol,and the activity of plant esterase is reduced by dichlorvos,and the quantitative analysis of dichlorvos can be made according to the peak value of 1-naphthol oxidation peak,which can be used for the quantitative analysis of dichlorvos.Under optimum conditions,the determination range for dichlorvos was from 1.0×10^-9-1.0×10^-5 mol·L^-1 with a low detection limit of 3.0×10^-10 mol·L^-1.

关 键 词：修饰电极 十六烷基三甲基溴化铵 植物酯酶 敌敌畏 

分 类 号：TP212.3[自动化与计算机技术—检测技术与自动化装置]