Capability of a carbon–polyvinylchloride composite electrode for the detection of dopamine, ascorbic acid and uric acid

Autor:	M.P. Elizalde, M.M. Dávila, Jürgen Mattusch, Rainer Wennrich, R. Aguilar
Rok vydání:	2004
Předmět:	Molar concentration Chromatography General Chemical Engineering Analytical chemistry Urine Ascorbic acid Carbon paste electrode chemistry.chemical_compound chemistry Electrode Electrochemistry Uric acid Differential pulse voltammetry Quantitative analysis (chemistry)
Zdroj:	Electrochimica Acta. 49:851-859
ISSN:	0013-4686
DOI:	10.1016/j.electacta.2003.10.002
Popis:	In this work, the composite carbon–polyvinylchloride (C–PVC) was used as an electrode for the detection of dopamine, ascorbic acid, uric acid and their mixtures by differential pulse voltammetry (DPV). The results showed that the untreated C–PVC electrode was selective and stable for the oxidation of dopamine in a mixture containing uric acid and an excess of ascorbic acid in acidic medium. The pre-treated C–PVC electrode in a neutral medium exhibited good resolution of the mixture components in the micro molar concentration range of DA. The ageing of the C–PVC electrode during longer time periods did not affect the peak potential and the detection of dopamine, uric acid and ascorbic acid in 0.1 M H 2 SO 4 . The practical analytical utility of the C–PVC electrode was demonstrated by the measurement of uric acid in human urine and serum samples without any preliminary pre-treatment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::07bd96b49d7c1c65e8f7c33c2207e296 https://doi.org/10.1016/j.electacta.2003.10.002 Zobrazit plný text záznamu Full Text from ScienceDirect