Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2043
Título: Development of polyaniline microarray electrodes for cadmium analysis
Autor: Oliveira, Marta
Viswanathan, Subramanian
Morais, Simone
Delerue-Matos, Cristina
Palavras-chave: Screen-printed electrodes
Microarray electrodes
Aniline
Cadmium
Data: 2012
Editora: Springer Verlag
Relatório da Série N.º: Chemical Papers; Vol. 66, Issue 10
Resumo: Disposable screen-printed electrodes (SPCE) were modified using a cosmetic product to partially block the electrode surface in order to obtain a microelectrode array. The microarrays formed were electropolymerized with aniline. Scanning electron microscopy was used to evaluate the modified and polymerized electrode surface. Electrochemical characteristics of the constructed sensor for cadmium analysis were evaluated by cyclic and square-wave voltammetry. Optimized stripping procedure in which the preconcentration of cadmium was achieved by depositing at –1.20 V (vs. Ag/AgCl) resulted in a well defined anodic peak at approximately –0.7 V at pH 4.6. The achieved limit of detection was 4 × 10−9 mol dm−3. Spray modified and polymerized microarray electrodes were successfully applied to quantify cadmium in fish sample digests.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2043
ISSN: 1336-9075
Versão do Editor: http://link.springer.com/article/10.2478%2Fs11696-012-0175-x
Aparece nas colecções:ISEP – GRAQ – Artigos

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
ART_MartaOliveira_2012_GRAQ.pdf854,93 kBAdobe PDFVer/Abrir


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.