|
|||||
|
|
Novel disposable microfabricated antimony-film electrodes for adsorptive stripping analysis of trace Ni(II) |
|
| Authors: | Christos Kokkinos Anastasios Economou Ioannis Raptis Thanasis Speliotis |
| Institution: | 1. Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 157 71, Athens, Greece;2. Institute of Microelectronics, NCSR “Demokritos”, P.O. Box 60228, Aghia Paraskevi, Athens 153 10, Greece;3. Institute of Material Science, NCSR “Demokritos”, P.O. Box 60228, Aghia Paraskevi, Athens 153 10, Greece |
| Abstract: | 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. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |