基于电双层电容的无机盐检测新方法  

New Method of Inorganic Salt Detection Based on Electric Double-Layer Capacitor

作　　者：喻嵘[1] 王玉皞[1] 王晓磊[2] 王艳庆[1] 周军乐[1] YU Rong;WANG Yu-hao;WANG Xiao-lei;WANG Yan-qing;ZHOU Jun-le(College of Information and Engineering,Nanchang University,Nanchang 330000,China;College of Electronic Information Engineering,South-Central University for Nationalities,Wuhan 430000,China)

机构地区：[1]南昌大学信息工程学院,江西南昌330000 [2]中南民族大学电子信息工程学院,湖北武汉430000

出　　处：《仪表技术与传感器》2018年第11期132-136,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金(41274170);江西省对外合作项目(20141BDH80001);江西省教育厅科学技术研究项目(GJJ160079)

摘　　要：针对电导率传感器在离子鉴别上的检测缺陷,提出一种使用新型串联电极式传感器检测无机盐的新方法。通过构建传感器-水体耦合系统模型,引入一项新的检测指标——电双层电容,将它与电导率联合起来,以提高对无机盐离子的鉴别能力。搭建出自动化实验平台,使用研制的传感器对无机盐溶液进行检测,以获取溶液的电双层电容和电导率数据。实验结果表明,新的检测方法对无机盐,尤其是硝酸盐和磷酸盐的检测能力进一步增强。Aiming at the detection defect of conductivity sensor in ionic identification a new method for the detection of inorganic salt with a new series electrode sensor was proposed.By constructing a sensor-water coupled system model,a new test index of electric double-layer capacitance was introduced,and it was combined with conductivity to improve the identification ability of inorganic salt ions.The automatic experiment platform was set up,and the self-developed sensor was used to detect the inorganic salt solution to obtain the electrical double-layer capacitance and conductivity data of the solution.Experimental results show that the new detection method of inorganic salt,especially the detection ability of nitrate and phosphate is further enhanced.

关 键 词：串联电极式传感器 电双层电容 电导率 无机盐离子 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]