Graphite-furnace atomic absorption spectrometric method for direct determination of iron and zinc in solid rice samples

被引：17
作者：
Belarra, MA
MartinezGarbayo, MP
Anzano, JM
Castillo, JR
机构：
[1] Analyt. Spectrosc. and Sensors Group, Department of Analytical Chemistry, University of Zaragoza
来源：
ANALYTICAL SCIENCES | 1996年 / 12卷 / 03期
关键词：
direct analysis; solid sample; rice analysis; iron determination; zinc determination; electrothermal atomic absorption spectrometry;
D O I：
10.2116/analsci.12.483
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A method for the direct determination of iron and zinc traces in solid rice samples using graphite-furnace atomic absorption spectrometry is proposed. Samples are placed in a graphite tube with a platform, and are determined from integrated absorbance measurements that are interpolated on calibration graphs obtained from aqueous standards of the two metals. The working conditions used allow iron and zinc to be determined at concentrations down to 10 mu g g(-1) (0.001%) in solid rice samples with a relative standard deviation of 6 - 10%.
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页码：483 / 488
页数：6
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