Please use this identifier to cite or link to this item:
標題: Elimination of the copper-zinc interference at mercury film electrodes by a Nafion/clay modified
作者: Zen, J.M.
Lin, H.Y.
Yang, H.H.
關鍵字: Zn2+;stripping;mercury electrode;Cu2+;clay;Nafion;anodic-stripping voltammetry;clay-modified electrodes;intermetallic;compound formation;glassy-carbon electrodes;montmorillonite films;cadmium;lead;charge
Project: Electroanalysis
期刊/報告no:: Electroanalysis, Volume 13, Issue 6, Page(s) 505-508.
The construction of a Nafion/clay-modified mercury electrode was shown to successfully eliminate the interference of Cu2+ in the stripping determination of Zn2+. The modified electrode discriminated towards deposition of Cu2+ during the electrolytic deposition of Zn2+ thus it avoided the formation of the intermetallic compounds at mercury. Square-wave stripping peak currents after 1 min of electrolysis at -1.2 V revealed that the Zn-stripping signal obtained with the modified electrode was linear over two ranges of 0-5 and 6-12 muM for Zn2+ in the presence of 10 muM Cu2+. The modification procedure is reproducible and the resulting attachment is stable. The analytical utility is illustrated by the measurement of Zn2+ in real water samples.
ISSN: 1040-0397
Appears in Collections:化學系所

Show full item record

Google ScholarTM




Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.