Collect. Czech. Chem. Commun. 2007, 72, 917-926

Cyclic Voltammetry of Iodine at the Organic Liquid/Aqueous Solution Interface

Shaoai Xiea,*, Jinping Jiab and Hong-Jin Chena

a School of Chemistry and Chemical Technology, Shanghai JiaoTong University, Shanghai 200240, P. R. China
b School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China


The electrochemical behavior of iodine extracted with an organic solvent at the liquid/liquid interface was studied using a new composite electrode. The effects of various solvents and supporting electrolyte on the electrochemical reaction of iodine were analyzed by cyclic voltammetric curves. The formation of a polar solvent complex of iodine and a strong donor solvent in organic solution was comfirmed by UV-VIS spectra. A possible mechanism was suggested based on experiments. This method makes it possible to measure heavy metal ion in solution indirectly.

Keywords: Liquid/liquid interface; Iodine; Solvent extraction; Cyclic voltammetry; Electrochemistry; Solvent effects.

References: 18 live references.