Determination of total selenium in geological samples by HG-AFS after concentration with thiol cotton fiber

Standard reference material and different geological samples were dissolved by system A （the mixture of nitric and perchloric acids） and system B （mixture of nitric, perchloric and hydrofluoric acids）, and total Se in all samples was measured by hydride-generation atomic fluorescence spectrometry （H...

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Bibliographic Details
Published in:Acta geochimica 2008-03, Vol.27 (1), p.90-96
Main Authors: Fan, Haifeng, Wen, Hanjie, Hu, Ruizhong, Chang, Bin
Format: Article
Language:English
Subjects:
Correlation coefficient
Cotton
Earth and Environmental Science
Earth Sciences
Fibers
Fluorescence
Geochemistry
Selenium
Spectrometry
地理特征
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Summary:Standard reference material and different geological samples were dissolved by system A （the mixture of nitric and perchloric acids） and system B （mixture of nitric, perchloric and hydrofluoric acids）, and total Se in all samples was measured by hydride-generation atomic fluorescence spectrometry （HG-AFS） after concentration with thiol cotton fiber （TCF）. The analytical results obtained by the two digestion method are in good agreement （within the limit of errors） for most of the samples, particularly for those having recommended values. The Se concentrations determined by the two methods are of no difference, and the correlation coefficient is 0.9986; the relative standard deviation （RSD） for the determination of 0.04 μg/g Se is 10.2%. The recovery rates of systems A and B by the standard-addition method were 96%-106% and 99%-104%, respectively.
ISSN:1000-9426
2096-0956
1993-0364
2365-7499
DOI:10.1007/s11631-008-0090-6