DETERMINATION OF TRACE AMOUNTS OF THORIUM AND LANTHANIDES BY SUCCESSIVE TITRATIONS USING SEMI-XYLENOL ORANGE WITH SPECTROPHOTOMETRIC ENDPOINT INDICATION

被引：14

作者：

HAFEZ, MAE

ABDALLAH, AMA

ELGANY, NEA

机构：

[1] Chemistry Department, Faculty of Science, El-Mansoura University, El-Mansoura

来源：

ANALYST | 1990年 / 115卷 / 02期

关键词：

Semi-xylenol orange; Spectrophotometric titration; Thorium; lanthanum; neodymium and gadolinium determination;

D O I：

10.1039/an9901500221

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

The precision and accuracy attainable in successive titrations of Th4+ and either La3+, Nd3+ or Gd3+ with a 0.001 M solution of disodium ethylenediaminetetraacetate using Semi-xylenol Orange (SXO) as a metallochromic indicator were studied. Thorium(IV) was titrated at pH 2, the pH was adjusted to 5.5-5.9 by adding hexamethylenetetramine buffer and La3+ (or Nd3+ or Gd3+) was then titrated. A comparison of the indicators SXO and Xylenol Orange for successive titrations of Th4+ and either La3+, Nd3+ or Gd3+ was carried out.

引用

页码：221 / 224

页数：4

共 21 条

[1]

BRITTON HTS, 1955, HYDROGEN IONS THEIR, V1, P365

[2]

ECHSHLAGER K, 1969, ERRORS MEASUREMENT R

[3]

PHOTOMETRIC MICRODETERMINATION OF SCANDIUM AND LANTHANIDES BY DIRECT AND SUCCESSIVE TITRATION USING SEMI-XYLENOL ORANGE [J].