锆-EDTA-(口底)唑体系混配型络合物的分光光度法研究及其应用

高等学校化学学报 ›› 1983, Vol. 4 ›› Issue (4): 453.

锆-EDTA-(口底)唑体系混配型络合物的分光光度法研究及其应用

王东进, 林超, 林兴

福州大学化学化工系

收稿日期:1982-02-01 出版日期:1983-08-24 发布日期:1983-08-24

SPECTROPHOTOMETRIC STUDY OF THE MIXED-LIGAND COMPLEX SYSTEM Zr(Ⅳ)-EDTA- STILBAZO AND ITS APPLICATIONS

Wang Dongjin, Lin Chao, Lin Xing

Department of Chemistry, Fuzhou University, Fuzhou

Received:1982-02-01 Online:1983-08-24 Published:1983-08-24

摘要/Abstract

摘要： 本文研究了锆-EDTA-(口底)唑混配型络合物的显色条件,表明在pH5.6—6.6形成了Zr(Ⅳ):EDTA:(口底)唑=1:1:1的稳定络合物,ε=2.81×10⁴(λ_max=503nm);锆在0—50微克/25毫升遵守比耳定律。并测定了镍基高温合金及铝镁合金中的微量锆,得到了满意的结果。

Abstract: A ternary complex of Zr(Ⅳ )-EDTA-Stilbazo has been investigated and found to be a highly selective system for the spectrophotometric determination of Zr(Ⅳ). Zirconium (Ⅳ) forms an orange-red coloured ternary complex with Stilbazo and EDTA at pH 5.6-6.6. The complex exhibits maximum absorption at 503nm, where the apparent molar absorptivity is 2.8×10⁴. The molar ratio of the three components in the complex is estimated to be Zr(Ⅳ) :EDTA : Stilbazo = 1: 1: 1 by the Job's method and molar ratio method. Beer's law is obeyed in the range of 0-50μg Zr/25ml.A highly selective method has been developed for the rapid determination of micro amounts of zirconium in nickel-base alloy and Al-Mg alloy without separating Zr from the accompanying elements.The results are satisfactory.

TrendMD:

王东进, 林超, 林兴. 锆-EDTA-(口底)唑体系混配型络合物的分光光度法研究及其应用. 高等学校化学学报, 1983, 4(4): 453.

Wang Dongjin, Lin Chao, Lin Xing . SPECTROPHOTOMETRIC STUDY OF THE MIXED-LIGAND COMPLEX SYSTEM Zr(Ⅳ)-EDTA- STILBAZO AND ITS APPLICATIONS. Chem. J. Chinese Universities, 1983, 4(4): 453.