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dc.contributor.authorTang, X.
dc.contributor.authorLiu, Yang
dc.contributor.authorHou, H.
dc.contributor.authorYou, T.
dc.date.accessioned2017-01-30T12:31:43Z
dc.date.available2017-01-30T12:31:43Z
dc.date.created2014-01-20T20:01:16Z
dc.date.issued2010
dc.identifier.citationTang, Xiaofeng and Liu, Yang and Hou, Haoqing and You, Tianyan. 2010. Electrochemical determination of L-Tryptophan, L-Tyrosine and L-Cysteine using electrospun carbon nanofibers modified electrode. Talanta. 80 (5): pp. 2182-2186.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/22498
dc.identifier.doi10.1016/j.talanta.2009.11.027
dc.description.abstract

A novel and simple method for the direct and quantitative determination of L-tryptophan (Trp), L-tyrosine (Tyr) and L-cysteine (Cys) was proposed in this work. Carbon nanofibers (CNFs), made by electrospinning technique, were used to modify carbon paste electrode (CPE) without any treatment to study the electrochemical behaviors of the three amino acids using cyclic voltammetry (CV) and constant potential amperometric method. The results demonstrated that the CNFs modified carbon paste electrode (CNFCPE) exhibited high electrocatalytic activity and good analytical performance towards the oxidation of the three amino acids. The linear ranges of Trp, Tyr and Cys were 0.1–119, 0.2–107 and 0.15–64Mwith correlation coefficients of 0.9994, 0.9985 and 0.9996, respectively. All the detection limits of the analytes were 0.1M(S/N = 3). In addition, the CNF-CPE displayed good reproducibility, high sensitivity and good selectivity towards the determination of the amino acids, making it suitable for the determination of Trp, Tyr and Cys in clinical and medicine.

dc.publisherElsevier
dc.subjectTryptophan
dc.subjectModified electrode
dc.subjectCysteine
dc.subjectTyrosine
dc.subjectCarbon nanofibers
dc.subjectElectrocatalytic oxidation
dc.titleElectrochemical determination of L-Tryptophan, L-Tyrosine and L-Cysteine using electrospun carbon nanofibers modified electrode
dc.typeJournal Article
dcterms.source.volume80
dcterms.source.number5
dcterms.source.startPage2182
dcterms.source.endPage2186
dcterms.source.issn00399140
dcterms.source.titleTalanta
curtin.department
curtin.accessStatusFulltext not available


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