DETERMINATION OF SUB-PART-PER-TRILLION AMOUNTS OF COBALT BY EXTRACTION AND PHOTOACOUSTIC-SPECTROSCOPY

被引：29

作者：

KITAMORI, T ^{[1
]}

SUZUKI, K ^{[1
]}

SAWADA, T ^{[1
]}

GOHSHI, Y ^{[1
]}

MOTOJIMA, K ^{[1
]}

机构：

[1] UNIV TOKYO,FAC ENGN,DEPT IND CHEM,TOKYO 113,JAPAN

来源：

ANALYTICAL CHEMISTRY | 1986年 / 58卷 / 11期

关键词：

SOLUTIONS; -; SPECTROSCOPY; Applications; XYLENE;

D O I：

10.1021/ac00124a034

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Ultratrace amounts of cobalt at parts-per-trillion (ppt) levels were extracted into m-xylene from aqueous solution as nitrosonaphthol chelates, and colorimetric determination of the m-xylene phase was carried out with photoacoustic spectroscopy (PAS). Coexistent metals and excessive reagents were completely eliminated by acidic and alkaline washings of the m-xylene phase, and the background level became constant and low enough for ultrasensitive PAS determination.

引用

页码：2275 / 2278

页数：4

共 9 条

[1] DETERMINATION OF TRACES OF COBALT IN SOILS - A FIELD METHOD [J].