EXTRACTION STUDIES OF THORIUM(IV) WITH TRIPHENYLPHOSPHINE OXIDE

被引：17

作者：

BHILARE, NG

SHINDE, VM

机构：

[1] Analytical Laboratory, The Institute of Science, Bombay, 400 032, 15, Madam Cama Road

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES | 1994年 / 185卷 / 02期

关键词：

D O I：

10.1007/BF02041297

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple method is described for the solvent extraction of thorium. Thorium is extracted quantitatively from 5 . 10(-3)M sodium salicylate solution at pH 2.5-3.25 using 2.16 . 10(-2)M triphenylphosphine oxide as an extractant dissolved in toluene. The extracted metal ion is stripped with hydrochloric acid (0.1M) and determined spectrophotometrically with Thoron-1 at 540 nm. The method permits separation of thorium from lanthanum, cerium, neodymium, samarium and uranium from binary mixtures and is applicable to the analysis of monazite sand. The method is precise, accurate and selective.

引用

页码：243 / 250

页数：8

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