Determination of copper in sulfide minerals by Zeeman electrothermal atomic absorption spectrometry

被引：0
作者：
Anna Lazaru
Trajče Stafilov
机构：
[1] Institute of Chemistry,
[2] Faculty of Science,undefined
[3] Sts. Cyril and Methodius University,undefined
[4] P.O. Box 162,undefined
[5] 91 001 Skopje,undefined
[6] Macedonia,undefined
来源：
Fresenius' Journal of Analytical Chemistry | 1998年 / 360卷
关键词：
Copper; Sulfide; Chloroform; Ketone; Organic Solvent;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A method for the determination of copper in some sulfide minerals (lorandite, realgar, orpiment, marcasite, stibnite, galenite and sphalerite) by Zeeman electrothermal atomic absorption spectrometry is presented. After the dissolution of samples, copper was extracted with sodium diethyldithiocarbamate into different organic solvents (carbon tetrachloride, chloroform and methylisobutyl ketone) at pH 11.0–12.0. The procedure was verified by standard addition. The standard deviation (SD) for 0.5 ng Cu is 0.01 ng, the relative standard deviation ranges from 3.5 to 5.5% and the detection limit of the method, calculated as 3 SD of the blank, was found to be 0.05 μg · g–1.
引用
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页码：726 / 728
页数：2
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