文献类型：期刊文献

英文题名：A chalcohalide glass/alloy based Ag+ ion - selective electrode with nanomolar detection limit

作者：Li, Lei[1];Yin, Haiwei[1];Wang, Yang[1];Zheng, Jianhua[1];Zeng, Huidan[1];Chen, Guorong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：7

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000416938200060)】；

基金：This study was supported by Shanghai Leading Academic Discipline Project (No. B502), Shanghai Key Laboratory Project (08DZ2230500), and the National Natural Science Foundation of China (NSFC51572081, 51572082).

语种：英文

摘要：In this paper, a silver ion-selective electrode material with lower detection limit is presented. The electrode is based on 22.5As(2)S(3)-22.5Ag(2)S-55AgCl chalcohalide glass membranes. The low detection limit decreases from the micromolar range of the original Ag2S-As2S3 electrode to the nanomolar level (1.89 nM) by introducing AgCl. The addition of AgCl increases the conductivity of the glasses and improves the analytical properties of electrodes because of the joint effects of Ag+ and Cl- on network structure of the glass. The super-Nernstian response behavior was observed for the partially crystallized electrode. The electrode containing AgCl also possesses a high selectivity (except for Hg2+), fast response and good stability.