Russian Journal of Electrochemistry

, Volume 44, Issue 8, pp 946–951

Voltammetric determination of malachite green in fish samples based on the enhancement effect of anionic surfactant

  • Wensheng Huang
  • Chunhai Yang
  • Wanyun Qu
  • Shenghui Zhang
Article

DOI: 10.1134/S1023193508080107

Cite this article as:
Huang, W., Yang, C., Qu, W. et al. Russ J Electrochem (2008) 44: 946. doi:10.1134/S1023193508080107

Abstract

In this work, an electrochemical method for the determination of malachite green was developed on the basis of enhancement effect of an anionic surfactant: sodium dodecyl benzene sulfonate. It is found that the oxidation peak current of malachite green at carbon paste electrode significantly increases in the presence of low concentration of sodium dodecyl benzene sulfonate in pH 6.5 phosphate buffer, suggesting that sodium dodecyl benzene sulfonate shows obvious enhancement effect for the determination of malachite green. The experimental parameters, such as supporting electrolyte, kind of surfactant, concentration of sodium dodecyl benzene sulfonate and accumulation time, were optimized, and then a sensitive and convenient electrochemical method was proposed for the determination of malachite green. The oxidation peak current is proportional to the concentration of malachite green over the range from 8.0 × 10−9 to 5.0 × 10−7 mol l−1, and the detection limit is 4.0 × 10−9 mol l−1 after 5 min of accumulation. Finally, this new method was successfully employed to detect malachite green in fish samples.

Key words

malachite green electrochemical determination surfactant carbon paste electrode 

Copyright information

© MAIK Nauka 2008

Authors and Affiliations

  • Wensheng Huang
    • 1
  • Chunhai Yang
    • 1
  • Wanyun Qu
    • 1
  • Shenghui Zhang
    • 1
  1. 1.Key Laboratory of Biological Resources Protection and Utilization of Hubei ProvinceHubei Institute for NationalitiesEnshiP.R. China

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