Cysteine-cystine redox cycling in a gold-gold dual-plate generator-collector microtrench sensor.
Anal Chem
; 86(14): 6748-52, 2014 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-24957698
ABSTRACT
Thiols and disulfides are ubiquitous and important analytical targets. However, their redox properties, in particular on gold sensor electrodes, are complex and obscured by strong adsorption. Here, a gold-gold dual-plate microtrench dual-electrode sensor with feedback signal amplification is demonstrated to give well-defined (but kinetically limited) steady-state voltammetric current responses for the cysteine-cystine redox cycle in nondegassed aqueous buffer media at pH 7 down to micromolar concentration levels.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cisteína
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Cistina
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Técnicas Eletroquímicas
Idioma:
En
Revista:
Anal Chem
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Reino Unido