光谱学与光谱分析 |
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Direct Determination of Trace Elements in Human Serum by Electrothermal Vaporization ICP-AES |
CHEN Shi-zhong |
Key Laboratory, Wuhan Polytechnic University, Wuhan 430023, China |
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Abstract A method for direct determination of trace elements in human serum by electrothermal vaporization inductively coupled plasma atomic emission spectrometry (ETV-ICP-AES) with slurry samplimg was developed. A polytetrafluoroethylene (PTFE) emulsion was used as a fluorinating agent to promote the vaporization of the analytes from graphite furnace, resulting in a remarkable improvement of analytical performances for the recommended method. The main factors affecting emission signals of the interested elements were investigated. The detection limits of 1.4 ng·mL-1 for Cu and 2.9 ng·mL-1 for Fe were achieved, and the precisions expressed as relative standard deviation (RSD) were less than 6.0% after optimization of the operating conditions.
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Received: 2004-04-28
Accepted: 2004-06-25
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Corresponding Authors:
CHEN Shi-zhong
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Cite this article: |
CHEN Shi-zhong. Direct Determination of Trace Elements in Human Serum by Electrothermal Vaporization ICP-AES[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(11): 1441-1443.
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URL: |
http://www.gpxygpfx.com/EN/Y2004/V24/I11/1441 |
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