一种新型的平面叉指电极传感器的设计与实现  

Design and Realization of A Novel Planar Interdigitated Electrode Sensor

作　　者：周军乐[1] 王玉皞[2] 王晓磊[3] 卢红阳[2] 白彩全[1] 

机构地区：[1]南昌大学理学院,南昌330000 [2]南昌大学信息工程学院,南昌330000 [3]中南民族大学电子信息工程学院,武汉430000

出　　处：《传感技术学报》2016年第3期356-361,共6页Chinese Journal of Sensors and Actuators

基　　金：江西省对外合作项目(20141BDH80001)

摘　　要：随着我国水质标准的日趋严格,无机盐类尤其是硝酸盐作为水体污染的重要标志,越来越被研究学者关注。本文提出了一种用于无机物离子检测的新型单片式平面叉指电极传感器,基于交流阻抗技术和电极动力学分析了电极/溶液体系,量化了电极与溶液界面上的双电层效应和传质过程,并建立等效电路模型,深入探讨了在不同频率段下电极/溶液体系的阻抗特性和相位特性。根据不同浓度的无机盐溶液和不同种类的无机盐溶液的实验结果表明,平面叉指电极传感器具有较好的鉴别能力。With increasingly stringent environmental standards, inorganic salts, especially nitrate as an important symbol of water pollution, have been highly focused by researchers. This paper proposed a new type of planar interdigitated electrode sensor for inorganic ions detection and centered around mechanism of it in electrolyte solution with AC impedance technique and electrode kinetics analysis. An equivalent circuit model for double layer effect and electrode process were proposed and applied to characterize the responses of impedance and phase over the different frequency ranges. Meanwhile, experimental results show that planar interdigitated electrode sensor have the ability to distinguish the different concentrations of inorganic salt solution, and the distinct identification of nitrate and phosphate based on the features of impedance spectroscopy and phase spectroscopy was also presented in this work.

关 键 词：传感器 无机物离子检测 交流阻抗技术 等效电路模型 双电层效应 

分 类 号：X853[环境科学与工程—环境工程]