A bismuth(Ⅲ) PVC membrane ion selective electrode based on5-(3,4,5-trimethoxyphenyl)-4-amino-1,2,4-triazole-3-thiol  

作　　者：Hai-Xia Wang Zhen-Ning Yan Xiang-Li Wen Yun-Xia Kang Shuang-Yan Zhang 

机构地区：[1]College of Chemistry and Molecular Engineering,Zhengzhou University

出　　处：《Chinese Chemical Letters》2015年第9期1147-1149,共3页中国化学快报（英文版）

基　　金：supported by the Science Foundation of Henan Province(No.142102310336)

摘　　要：The construction,performance characteristics and application of a new bismuth（Ⅲ） PVC membrane electrode based on 5-（3,4,5-trimethoxyphenyl）-4-amino-1,2,4-triazole-3-thiol are reported in this paper.The designed sensor exhibited a Nernstian response for Bi^3＋ ion ranging from 5.0×10^-7 mol/L to1.0×10^-2 mol/L with a slope of 19.8 mV/decade.The operational pH range of the sensor is 3.0-6.0.The electrode shows a response time of 6 s and can be used for at least five weeks without any considerable divergence in potentials.It exhibits very good selectivity relative to a wide variety of alkali,alkaline earth,transition and heavy metal ions.The proposed electrode could be used as an indicator electrode in potentiometric titration of Bi^3＋ ions with EDTA and in the determination of Bi^3＋ content in stomach medicine.The construction,performance characteristics and application of a new bismuth（Ⅲ） PVC membrane electrode based on 5-（3,4,5-trimethoxyphenyl）-4-amino-1,2,4-triazole-3-thiol are reported in this paper.The designed sensor exhibited a Nernstian response for Bi^3＋ ion ranging from 5.0×10^-7 mol/L to1.0×10^-2 mol/L with a slope of 19.8 mV/decade.The operational pH range of the sensor is 3.0-6.0.The electrode shows a response time of 6 s and can be used for at least five weeks without any considerable divergence in potentials.It exhibits very good selectivity relative to a wide variety of alkali,alkaline earth,transition and heavy metal ions.The proposed electrode could be used as an indicator electrode in potentiometric titration of Bi^3＋ ions with EDTA and in the determination of Bi^3＋ content in stomach medicine.

关 键 词：Bi^3＋ PVC-membrane Ion-selective electrode Potentiometry lonophore 

分 类 号：O646.54[理学—物理化学]