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  • Title: [Direct determination of trace elements in human serum by electrothermal vaporization ICP-AES].
    Author: Chen SZ.
    Journal: Guang Pu Xue Yu Guang Pu Fen Xi; 2004 Nov; 24(11):1441-3. PubMed ID: 15762499.
    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 sampling 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 x mL(-1) for Cu and 2.9 ng x 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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