Novel disposable microfabricated antimony-film electrodes for adsorptive stripping analysis of trace Ni(II)

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• 作者：Christos Kokkinos ; Anastasios Economou ; Ioannis Raptis ; Thanasis Speliotis
• 关键词：Antimony-film electrode ; Stripping analysis ; Ni detection
• 刊名：Electrochemistry Communications
• 出版年：2009
• 出版时间：February 2009
• 年：2009
• 卷：11
• 期：2
• 页码：250-253
• 全文大小：513 K

文摘

This work describes a novel type of antimony electrode for adsorptive stripping voltammetry (AdSV). The electrode was microfabricated by coating a silicon chip with a thin antimony-film by means of sputtering and the active area of the electrode was defined by photolithography. The resulting antimony-film electrodes (SbFEs) were characterized by optical and electrochemical techniques. The sensors were tested for the detection of low concentrations of Ni(II) by AdSV in the presence of dimethylglyoxime. Well-formed stripping peaks and a linear dependence of the stripping peak current on the Ni(II) concentration were observed on the microfabricated SbFEs while comparative measurements attempted with electroplated SbFEs were unsuccessful. Utilizing thin-film technology for the formation of the antimony-film extends the scope of these devices as mercury-free sensors in AdSV.