Slurry sampling electrothermal atomic absorption spectrometric determination of copper in herbal medicine samples with a molybdenum tube atomizer

被引：14
|
作者：
Amin, N [1 ]
Kaneco, S
Suzuki, T
Ohta, K
机构：
[1] Mie Univ, Fac Engn, Dept Chem Mat, Tsu, Mie 5148507, Japan
[2] Mie Univ, Environm Preservat Ctr, Tsu, Mie 5148507, Japan
来源：
MICROCHEMICAL JOURNAL | 2003年 / 74卷 / 02期
关键词：
copper; slurry sampling; herbal medicine; electrothermal atomic absorption spectrometry; metal tube atomizer;
D O I：
10.1016/S0026-265X(03)00024-9
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An ultrasonic slurry sampling electrothermal atomic absorption spectrometric method with a molybdenum tube atomizer has been developed for the determination of copper in herbal medicine samples. Glycerol solution (10%) was used as the slurry medium. The optimum pyrolysis temperature was 760 degreesC. The detection limit was 72 fg (3 x S/N ratio). Matrix element interference was investigated and it was found that glycerol as a chemical modifier eliminated the interference. The amounts of copper in herbal medicines determined by the method proposed are in good accordance with those measured in dissolved acid-digested samples. The method enables rapid calibration, and simple and rapid analysis of copper in herbal medicine samples at low cost. (C) 2003 Elsevier Science B.V. All rights reserved.
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页码：181 / 186
页数：6
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