Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/34786
標題: Elimination of the copper-zinc interference at mercury film electrodes by a Nafion/clay modified
作者: Zen, J.M.
曾志明
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
期刊/報告no:: Electroanalysis, Volume 13, Issue 6, Page(s) 505-508.
摘要: 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.
URI: http://hdl.handle.net/11455/34786
ISSN: 1040-0397
文章連結: 2-9
http://dx.doi.org/10.1002/1521-4109(200104)13:6<505::aid-elan505>3.0.co
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