聚吲哚乙酸修饰电极对亚硝酸根离子的电化学检测  

Electrochemical detection of nitrite ion by polyindoleacetic acid modified electrode

作　　者：徐志勇 张培锋 白云飞 杨育军 XU Zhiyong;ZHANG Peifeng;BAI Yunfei;YANG Yujun(Xuchang Ecological Environment Monitoring Center of Henan Province(Xuchang Key Laboratory of Environmental Monitoring and Analysis),Xuchang 461000,Henan,China;Xuchang Environmental Monitoring Information Center,Xuchang 461000,Henan,China;College of Chemical Engineering and Materials,Xuchang University,Xuchang 461000,Henan,China)

机构地区：[1]河南省许昌生态环境监测中心(许昌市环境监测分析重点实验室),河南许昌461000 [2]许昌市环境监控信息中心,河南许昌461000 [3]许昌学院化工与材料学院,河南许昌461000

出　　处：《化学研究》2024年第5期433-437,共5页Chemical Research

基　　金：河南省科技攻关项目(232102231050)。

摘　　要：研究了聚吲哚乙酸修饰电极对NO_(2)^(-)的检测。通过恒电流沉积法制备聚吲哚乙酸修饰电极,然后采用循环伏安法研究了该修饰电极对NO_(2)^(-)的电催化氧化行为。实验结果表明,在HAc-NaAc缓冲溶液(0.1 mol·L^(-1),pH=2.6)中,聚吲哚乙酸修饰电极对NO_(2)^(-)具有较好的催化氧化活性。该方法用于香肠样品中NO_(2)^(-)的检测,结果令人满意。Through the galvanostatic deposition indole-3-acetic acid(IAA)was electropolymerized on glassy carbon electrode(GCE).The polymerization conditions were discussed and the catalytic capability of the obtained poly(IAA)modified GCE towards the oxidation of nitrite was investigated using cyclic voltammetry and amperometry.The experimental results indicate that the poly(IAA)modified GCE has good catalytic oxidation activity for the NO_(2)^(-)ions in the HAc-NaAc buffer solution(0.1 mol·L^(-1),pH=2.6).Then The method was applied to the detection of NO_(2)^(-)in sausage samples with satisfactory results.

关 键 词：吲哚乙酸 循环伏安法 修饰电极 检测 

分 类 号：O657.1[理学—分析化学]