Electrochemiluminescent determination of L-cysteine with a flow-injection analysis system.
Anal Sci
; 19(4): 575-8, 2003 Apr.
Article
em En
| MEDLINE
| ID: mdl-12725394
ABSTRACT
A flow-injection electrochemiluminescent method for L-cysteine determination has been developed based on its enhancement of the electrochemiluminecence of luminol at a glassy carbon electrode. This method is simple and sensitive for cysteine determination. Under the selected experimental parameters, the linear range for cysteine concentration was 1.0 x 10(-6) - 5.0 x 10(-5) mol/l, and the detection limit was 0.67 micromol/l (S/N = 3). The relative standard deviation for 11 measurements of 1.0 x 10(-5) mol/l cysteine was 4.5%. The proposed method has been applied to the detection of cysteine in pharmaceutical injections with satisfactory results.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Análise de Injeção de Fluxo
/
Cisteína
/
Eletroquímica
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Anal Sci
Ano de publicação:
2003
Tipo de documento:
Article