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Influence of supporting electrolytes with various structures on electrochemical reduction determination of 3,3�?�?�?�?�?�?�?�?, 4,4�?�?�?�?�?�?�?�?- tetrachlorobiphenyl at different metal electrodes

Renjie Sun, Yucheng Wu, Zhu Chen, Chengwu Shi*

1-methyl-3-propylimidazoliumiodide (MPII), 3-hexyl-1-methylimidazolium iodide (HMII) and three tetraalkylammoniumsalts were employed as supporting electrolytes on electrochemical reduction determination of 3,3Â’,4,4Â’- tetrachlorobiphenyl (PCB-77) at Pt, Ag, Cu electrodes. It was found that HMII andMPII can effectively increase the cathodic peak current of PCB- 77 and the electrocatalysis activity of themetal on electrochemical determination of PCB-77 was in the following order: Cu>Ag>Pt.