CRCU

Chemical Research in Chinese Universities ›› 2002, Vol. 18 ›› Issue (3): 316-320.

• Articles • Previous Articles     Next Articles

Determination of Trace Thiocyanate by a Chitosan-Modified Glassy Carbon Electrode

LU Guang-han1, YAO Xin1, ZHOU Xiang-chun2, ZHAN Tong1, LONG De-wu1   

  1. 1. Department of Chemistry, Central China Normal University, Wuhan 430079, P. R. China;
    2. Department of Chemistry, Hubei Jingzhou Teacher College, Jinzhou 434100, P. R. China
  • Received:2001-09-05 Online:2002-08-24 Published:2011-08-04
  • Supported by:

    Supported by the Nature Science Fund Project of Hubei Province.

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Abstract: A chitosan-modified glassy carbon electrode(CMGCE) was employed for the determination of thiocyanate. The measurement was carried out by means of anodic stripping voltammetry. The effects of several experimental parameters, such as pH, the amount of modifier, deposition potential and deposition time were studied for analytical application, respectively. A liner response was obtained in the concentration range of 3.5×10-8-9.3×10-7 g/mL of SCN-. The detection limit was found to be 1.9×10-8 g/mL. The method was satisfactorily used to detect SCN- in saliva.

Key words: Anodic stripping voltammetry, Thiocyanate, CMGCE, Saliva