Chemical Research in Chinese Universities ›› 2017, Vol. 33 ›› Issue (5): 799-803.doi: 10.1007/s40242-017-7010-4

• Articles • Previous Articles     Next Articles

A New and Facile Strategy for Determination of Lead and Cadmium Using Silver Electrodes Manufactured from Digital Versatile Discs

CUI Wenyu1,2, FAN Lishuang3, GENG Lin1, AN Maozhong3, ZHANG Fujun4   

  1. 1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China;
    2. School of Pharmacy, Harbin University of Commerce, Harbin 150076, P. R. China;
    3. School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China;
    4. Jixi Enviromental Inspection Detachment, Jixi 158100, P. R. China
  • Received:2017-01-05 Revised:2017-05-18 Online:2017-10-01 Published:2017-06-29
  • Contact: GENG Lin,E-mail:genglin@hit.edu.cn E-mail:genglin@hit.edu.cn
  • Supported by:

    Supported by the College Students Innovation and Entrepreneurship Training Program, China(No.201610240067).

Abstract:

The use of a digital versatile disc(DVD)-based Ag electrode for the square-wave anodic stripping voltammetric determination of Pb2+ and Cd2+ was described. The effect of I- on the stripping analysis of Pb2+ and Cd2+ at Ag electrodes was first studied. I- significantly improved the stripping peaks of both Pb2+ and Cd2+. The square-wave voltammetric stripping response was linear over 5-50 μg/L for Pb2+ and Cd2+ with a deposition time of 118 s. The detection limits were 0.2 and 2.6 μg/L for Pb2+ and Cd2+, respectively. The high sensitivity, selectivity, and stability of this DVD-based Ag electrode enabled its practical application for simple, rapid and economical determination of trace levels of Cd2+ and Pb2+ in tap water samples. In addition, detection can be achieved without sample deoxygenation and the electrode can be easily manufactured.

Key words: Digital versatile disc(DVD)-based Ag electrode, Ag, Pb2+, Cd2+, Stripping analysis