SPECTROPHOTOMETRIC DETERMINATION OF NICKEL IN IRON AND STEEL WITH 2-NITROSO-1-NAPHTHOL-4-SULFONIC ACID - IMPROVEMENT OF SENSITIVITY BY EXTRACTING EXCESS OF REAGENT

被引：19

作者：

MOTOMIZU, S

TOEI, K

机构：

[1] Department of Chemistry, Faculty of Science, Okayama University, Tsushima, Okayama-shiJapan

来源：

ANALYTICA CHIMICA ACTA | 1978年 / 97卷 / 02期

关键词：

D O I：

10.1016/S0003-2670(01)93440-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Removal of the excess of a reagent extracted into an organic phase in the solvent extraction of a metal complex anion with a quaternary ammonium ion can be helpful in improving spectrophotometric determinations of metals. The principle can be applied to the extraction with zephiramine of the nickel complex anion formed with 2-nitroso-1-naphthol-4-sulfonic acid. The exchange equilibrium constants for the nickel complex anion and monovalent anions (nitrate and halide) were determined. The proposed method was applied to the determination of nickel in iron and steel samples (NBS 55e, 19g, 101e and 126b). © 1978.

引用

页码：335 / 342

页数：8

共 5 条

[1] NEW METHOD OF REMOVING EXCESS OF REAGENT FROM ORGANIC PHASES IN SOLVENT-EXTRACTION OF METAL-COMPLEX ANIONS WITH QUATERNARY AMMONIUM-SALTS - SPECTROPHOTOMETRIC DETERMINATION OF MICRO-AMOUNTS OF COBALT WITH 2-NITROSO-1-NAPHTHOL-4-SULFONIC ACID [J].