期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 63, 期 6, 页码 710-713出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2008.03.017
关键词
Te; electrochemical hydride generation; atomic fluorescence spectroscopy
类别
An electrochemical hydricle generation system was developed for the detection of Te by coupling an electrochemical hydride generator with atomic fluorescence spectrometry. Since TeH2 is unstable and easily decomposes in solution, a reticular W filament cathode was used in the present system. The TeH2 generated on the cathode surface was effectively driven out by sweeping gas from the cathode chamber. In addition, a low temperature electrochemical cell (10 degrees C) was applied to reduce the decomposition of TeH2 in solution. The limit of detection (LOD) was 2.2 ng ml(-1) and the relative standard deviation (RSD) was 3.9% for nine consecutive measurements of standard solution. This method was successfully employed for determination of Te in soldering tin material. (c) 2008 Elsevier B.V. All rights reserved.
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