EXTRACTION AND PHOTOMETRIC DETERMINATION OF ZINC IN PRESENCE OF LARGE AMOUNTS OF CADMIUM USING 1-(2-PYRIDYLAZO)-2-NAPHTHOL (PAN) AND EMPLOYING IODIDE MASKING

被引：17

作者：

FLASCHKA, H

WEISS, R

机构：

[1] School of Chemistry, Georgia Institute of Technology, Atlanta

来源：

MICROCHEMICAL JOURNAL | 1969年 / 14卷 / 02期

关键词：

D O I：

10.1016/0026-265X(69)90050-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The zinc in high purity cadmium is determined photometrically as the PAN complex after extraction into chloroform. Massive amounts of potassium iodide are added to the sample solution to mask cadmium. Copper, mercury, lead, and silver are also masked by the iodide. Some cyanide is added which effects masking of nickel and cobalt. Tolerance limits for these and several other interferences are given. The results are reliable to several tenths of a microgram of zinc. Samples containing up to about 1 g of cadmium can be handled. Zinc can be determined even at a cadmium:zinc molar ratio of 500,000:1; although additional operations are required at ratios above 100,000:1. © 1969.

引用

页码：318 / &

共 8 条

[1] SOLVENT EXTRACTION OF CERTAIN TRANSITION METAL IONS WITH 1-(2-PYRIDYLAZO)-2-NAPHTHOL - A STUDY OF COMPLEX FORMATION AND DISTRIBUTION EQUILIBRIA [J].