Voltammetric characterisation of silicon-based microelectrode arrays and their application to mercury-free stripping voltammetry of copper ions

Autor:	John Alderman, Yvonne E. Watson, Kenneth Rodgers, Damien W. M. Arrigan, Grégoire Herzog, Alfonso Berduque, Valerio Beni, Yvonne H. Lanyon, Frank Stam
Rok vydání:	2007
Předmět:	Microelectrode Anodic stripping voltammetry Chemistry Inorganic chemistry Electrode Analytical chemistry chemistry.chemical_element Multielectrode array Electrochemistry Platinum Copper Voltammetry Analytical Chemistry
Zdroj:	Talanta. 71:1022-1030
ISSN:	0039-9140
DOI:	10.1016/j.talanta.2006.05.090
Popis:	This paper describes the electrochemical characterisation of a range of gold and platinum microelectrode arrays (MEAs) fabricated by standard photolithographic methods. The inter-electrode spacing, geometry, numbers and dimensions of the electrodes in the arrays were found to influence the voltammetric behaviours obtained. Excellent correlation was found between experimental data and theoretical predictions employing published models of microelectrode behaviour. Gold MEAs were evaluated for their applicability to copper determination in a soil extract sample, where agreement was found between the standard analytical method and a method based on underpotential deposition-anodic stripping voltammetry (UPD-ASV) at the MEAs, offering a mercury-free alternative for copper sensing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d31c82ac66a6ffaff0ea708763ef71d https://doi.org/10.1016/j.talanta.2006.05.090 Zobrazit plný text záznamu Full Text from ScienceDirect