基于铝酞菁为载体的亚硝酸根选择性电位传感器的研制(英文)  

A Nitrite-Selective Potential Sensor Based on an Aluminum-Phthalocyanine Complex as the Ionophore

作　　者：许文菊[1] 柴雅琴[1] 袁若[1] 张婷婷[1] 

机构地区：[1]西南大学化学化工学院,重庆400715

出　　处：《西南大学学报（自然科学版）》2008年第7期37-41,共5页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(20675064);重庆市自然科学基金资助项目(2005BB4100)

摘　　要：制备了基于铝酞菁为中性载体对亚硝酸根离子（NO2^-）具有独特选择性的一种聚合膜（PVC）电极。该电极对NO2^-呈现出反-Hofmeister选择性行为和近Nernst电位响应，其线性范围为1．0×10^-1～1．5×10^-6mol／L，检测下限为9．5×10-^-7mol／L，斜率为（-58．3±0．5）mV／decade。该电极作为直接电位法的指示电极，能运用于废水中亚硝酸的测定，结果令人满意。A poly （vinyl chloride） （PVC） membrane electrode based on an aluminum-phthalocyanine （A1Pc） complex as a neutral carrier with unique selectivity to nitrite ion （NO2^-） was prepared. The proposed electrode was shown to exhibit anti-Hofmeister selectivity behavior and a near-Nernst potential response to NO2^- over a linear range of 1.0×10^-1～1.5×10^-6 mol·L^-1 with a detection limit of 9.5×10^-7 mol·L^-1 and a slope of -58. 3±0.5 mV per decade. This electrode was applied, as an indicator electrode in the direct potentiometric method, to the determination of nitrite in wastewater, and satisfactory results were obtained.

关 键 词：铝酞菁 亚硝酸根 离子选择性电极 

分 类 号：O657.15[理学—分析化学]