锆－槲皮素－EDTA三元混配络合荧光体系的研究及其应用  

Fluorometric Study of the Mixed-Ligand Compl ex System Zirconium-Quercetin-EDTA and Its Appl ication

作　　者：曾恚恚 林辉概[1] 俞汝勤[1] 

机构地区：[1]湖南大学化学化工系

出　　处：《岩矿测试》1994年第1期36-40,共5页Rock and Mineral Analysis

基　　金：国家自然科学基金

摘　　要：在弱碱性条件下，ＥＤＴＡ与Ｚｒ（Ⅳ）、槲皮素发生三元混配络合反应，形成组成比为２：１：３的锆－槲皮素－ＥＤＴＡ混配荧光络合物，由此建立了锆的选择性较好、灵敏度较高的荧光测定方法。该法测定Ｚｒ（Ⅳ）的线性范围为０．１８～３．６５μｇ／ｍｌ，方法检测限达３．５ｎｇ／ｍｌ。将此法用于直接测定合金样中的锆，结果令人满意。he fluorescent reaction among zirconium(Ⅳ),quercetin and EDTA in a weak alkalinemedium was studied.The composition of the mixed-ligand fluorescent complex is Zr(Ⅳ):quercetin:EDTA=2:1:3.Based on this reaction,a fluorimetric method with high sensitivityand fine selectivity was developed.Zirconium from 0.18μg/ml to 3. 65μg/ml can be determined.The detection limit of the method was 3.5ng/ml. The method has been applied to the analysis ofzirconium in alloys without any separation.

关 键 词：锆 槲皮素 混配络合物 荧光分析 

分 类 号：O614.412[理学—无机化学]