Fabrication of a Ho^(3+)-PVC membrane sensor based on N-phenyl-2-(thiophen-2-ylmethylene)hydrazinecarbothioamide for determination of holmium ions

作     者：Hassan Ali Zamani 

作者机构：Department of Applied ChemistryQuchan BranchIslamic Azad UniversityQuchanIran 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2011年第22卷第2期

页      面：201-204页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

主　　题：Sensor PVC membrane Ion-selective electrode Potentiometry 

摘      要：In this research,a new poly（vinyl chloride）（PVC） membrane sensor for Ho^3＋ ion based on N-phenyl-2-（thiophen-2- ylmethylene）hydrazinecarbothioamide（PHC） as an ionophore was *** sensor demonstrated good selectivity and sensitivity towards the holmium ion in comparison with variety of cations,including alkali,alkaline earth,transition and heavy metal *** effect of membrane composition and pH on the response properties of the electrode was *** detail,the suggested sensor exhibited a Nernstian behavior（with a slope of 20.4±0.3 mV decade^-1） in the range of 1.0×10^-6 to 1.0×10^-2 mol/L with a detection limit of 6.2×10^-7 mol/*** response time was relatively quick in the whole concentration range（～5 s）.The sensor usage was found to be at least 10 weeks in a pH range of *** was successfully applied in determination of fluoride ions in mouth wash preparations.