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.
Key words：Electrothermal vaporization;ICP-AES;Polytetrafluoroethylene emulsion;Human serum;Trace elements
陈世忠. 电热蒸发ICP-AES法直接测定人血清中微量元素[J]. 光谱学与光谱分析, 2004, 24(11): 1441-1443.
CHEN Shi-zhong. Direct Determination of Trace Elements in Human Serum by Electrothermal Vaporization ICP-AES. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(11): 1441-1443.
