摘要
在玻碳电极导电基底上电聚合生成棍状3,4-聚乙烯二氧噻吩（PEDOT）作为固态接触层,利用滴涂法将以ETH9033为离子载体的选择性膜溶液涂于电极表面作为选择性透过膜,制备全固态氯离子选择性电极。将其作为工作电极,环形铂片作为辅助电极,与Ag/AgCl参比电极一起用PVC封装成氯离子传感器。通过测试,该氯离子传感器具有良好的选择性,检出限为10-4.7 mol/L。在10-1~10-5 mol/L范围里重复性相对标准差在0.15%以内,与商用Thermo Scientific氯离子电极检测值对比,响应电位偏差在0.5 mV以内。该方法设计出稳定的全固态氯离子传感器,对氯离子全固态电极以及氯离子检测的研究具有实际参考意义。
A rod-like 3,4-polyethylenedioxythiophene PEDOT was produced as a solid contact layer by means of electro polymerization on a glassy carbon electrode conductive substrate.A selective membrane solution with ETH9033 was applied to the surface of the electrode as a selective permeation membrane by a drop coating method.Through these steps,the solid-state chloride ion selective electrode was successfully prepared.The ion electrode is used as a working electrode and the annular platinum sheet is used as an auxiliary electrode,together with the Ag/AgCl reference electrode,they are encapsulated into a chloride ion sensor with PVC.Through testing,the chlorine ion sensor has a good selectivity with a detection limit of 10-4.7 mol/L.Relative standard deviation within 0.15% within the range of10-1~10-5 mol/L.Compared with the commercial Thermo Scientific chloride ion electrode,the response potential deviation is within 0.5 mV.The stable solid-state chloride ion sensor designed by this method has practical reference significance for the study of chloride ion solid state electrode and chloride ion detection.
作者
雷鸣
袁子刚
陈娟
祁欣
Lei Ming;Yuan Zigang;Chen Juan;Qi Xin(College of Science,Beijing University of Chemical Technology,Beijing 100029,China;Institute of information,Beijing University of Chemical Technology,Beijing 100029,China)
出处
《电子测量技术》
2018年第15期78-81,共4页
Electronic Measurement Technology
基金
国家自然科学基金(61771034)项目资助
关键词
氯离子
全固态选择性电极
传感器
性能测试
chloride ion
all solid state selective electrode
sensor
performance testing
