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Study and Application of Electrochemical Behavior of Calcium-ARS on a Mercury Film Electrode

Authors
  • Chen, Xiaotong1
  • Cui, Qianling1
  • Hu, Jingbo1
  • 1 Beijing Normal University, Department of Chemistry, Beijing, 100875, China , Beijing (China)
Type
Published Article
Journal
Frontiers of Chemistry in China
Publisher
Higher Education Press
Publication Date
Jan 01, 2006
Volume
1
Issue
1
Pages
102–107
Identifiers
DOI: 10.1007/s11458-005-0018-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

A sensitive complex absorptive wave of Ca-ARS was obtained by using differential pulse voltammetry when a mercury film glass carbon electrode was immersed in 0.1 mol L−1 KOH and 4.5×10−4 mol L−1 ARS solution. The peak potential obtained was −1.17 V (vs Ag-AgCl). The peak current was proportional to the concentration of calcium in the range of 5.0×10−8−4.2×10−5 mol L−1. The detection limit was 2.0×10−8 mol L−1. This method was applied successfully to determining traces of calcium in blood serum. The electrochemical behavior of the system was also studied by cyclic voltammetry, and the experiment results showed that the electrode process was an irreversible absorptive with two electrons participating.

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