DETERMINATION OF TRACE AMOUNTS OF COBALT AT SUB-MU-G 1(-1) LEVEL BY SOLID-PHASE SPECTROPHOTOMETRY

被引：21
作者：
FERNANDEZDECORDOVA, ML
MOLINADIAZ, A
PASCUALREGUERA, MI
机构：
[1] UNIV GRANADA,FAC EXPTL SCI,DEPT ANALYT CHEM,E-23071 JAEN,SPAIN
[2] UNIV GRANADA,FAC SCI,DEPT ANALYT CHEM,E-18071 GRANADA,SPAIN
来源：
ANALYTICAL LETTERS | 1992年 / 25卷 / 10期
关键词：
SOLID PHASE SPECTROPHOTOMETRY; COBALT DETERMINATION; 4-(2-PYRIDILAZO) RESORCINOL; BEERS; DRUGS; NATURAL WATERS;
D O I：
10.1080/00032719208018265
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A very sensitive method for the determination of trace amounts of cobalt has been developed, based on Solid-Phase Spectrophotometry (SPS). The method is based on the fixation of cobalt(II) as the 4-(2-pyridilazo)resorcinol complex on an anion-exchange resin. Resin phase absorbance is measured directly, and it allows the determination of cobalt (with a RSD of 2.4 %; in the range of 0.4 -3.8 μg 1-1. The method was applied to the determination of cobalt (II) in different samples, namely beers, drugs and waters. © 1992, Taylor & Francis Group, LLC. All rights reserved.
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页码：1961 / 1980
页数：20
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