SPECTROPHOTOMETRIC DETERMINATION OF TRACE AMOUNTS OF COBALT AND COPPER WITH 3-(2'-THIAZOLYLAZO)-2,6-DIAMINOPYRIDINE

被引：2
|
作者：
SHRAYDEH, BF
ZUHRI, AZA
HANNOUN, M
机构：
[1] Chemistry Department, Faculty of Science, An-Najah National University, Nablus, West Bank, Via Israel
来源：
SPECTROSCOPY LETTERS | 1992年 / 25卷 / 07期
关键词：
COBALT; COPPER; SPECTROPHOTOMETRIC DETERMINATION 3-(2'THIAZOLYLAZO)-2,6-DIAMINOPYRIDINE;
D O I：
10.1080/00387019208018214
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Sensitive methods for the determination of trace amounts of cobalt and copper by complexation with 3-(2'-Thiazolylazo)-2,6-diaminopyridine (2,6-TADAP) are described. Copper forms a 1:2 violet complex with the reagent having a molar absorptivity of 1.00 x 10(4) L mol-1 cm-1, Beer's law is obeyed over the range 0 - 50.84 mug in the total volume of 10ml. Cobalt also forms a 1:1 green complex with a molar absorptivity of 1.07 x 10(4) L mol-1 cm-1 and obeying Beer's law over the range 0 -23.57 mug in the total volume of 10 ml. The procedure is simple and rapid without any tedious extraction steps for copper and without oxidation of cobalt (II) to cobalt (III).
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页码：1049 / 1055
页数：7
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