ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Electrochemical dissolution of chalcopyrite studied by voltammetry of immobilized microparticles

Ľ. Pikna, L. Lux, and T. Grygar

Department of Chemistry, Faculty of Metallurgy, Technical University, 042 00 Košice, Slovakia

E-mail: Lubomir.Pikna@tuke.sk

Received: 30 January 2006  Revised: 28 March 2006  Accepted: 10 April 2006

Abstract: The characteristics of anodic electrochemical dissolution of chalcopyrite (CuFeS₂) powder in hydrochloric acid medium with sodium chloride have been studied. Cyclic voltammetry and chronopotentiometry of immobilized microparticles using paraffin-impregnated graphite electrode was employed. Present work is focused on electrochemical identification of chalcopyrite cathodic and anodic reaction products within the potential range of −0.7 to +0.8 V (vs. SCE) in hydrochloric acid solution containing sodium chloride and/or copper(II) chloride.

Keywords: chalcopyrite - cyclic voltammetry - chronopotentiometry - immobilized microparticles

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-006-0051-7

Chemical Papers 60 (4) 293–296 (2006)