Electrode process of diethyldithiocarbamate on surface of pyrrhotite

  • Li Wei-zhong 
  • Qin Wen-qing Email author
  • Qiu Guan-zhou 
  • Dong Qing-hai 


The electrode process of diethyldithiocarbamate on the surface of pyrrhotite was studied using systematic electrochemical analysis, including cyclic voltammetry, chronopotentiometry and galvanostatic. Experimental results show that tetraethylthioram disulphide (TETD) is electrodeposited on pyrrhotite electrode surface in the presence of 1.0×10−4 mol/L diethyldithiocarbamate when the electrode potential is higher than 0.25 V. The electrochemical kinetics parameters of the electrode process of diethyldithiocarbamate on surface of pyrrhotite are calculated as follows: the exchange current density is 2.48 µA/cm2, and the transmission coefficient is 0.46. The electrodeposition includes two steps electrochemical reaction. The first reaction is electrochemical adsorption of diethyldithiocarbamate ion, then the adsorbed ion associates with a diethyldithiocarbamate ion from the solution and forms tetraethylthioram disulphide on the surface of pyrrhotite.

Key words

electrode process pyrrhotite diethyldithiocarbamate 

CLC number



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Copyright information

© Central South University 2005

Authors and Affiliations

  • Li Wei-zhong 
    • 1
  • Qin Wen-qing 
    • 1
    Email author
  • Qiu Guan-zhou 
    • 1
  • Dong Qing-hai 
    • 2
  1. 1.School of Resources Processing and BioengineeringCentral South UniversityChangshaChina
  2. 2.General Research Institute for Nonferrous MetalsBeijingChina

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