Voltammetric determination of cysteine at a graphite electrode modified with gold nanoparticles

D. O. Perevezentseva, E. V. Gorchakov

Результат исследований: Материалы для журналаСтатья

17 Цитирования (Scopus)

Аннотация

The electrochemical behaviour of cysteine (Cys) at a graphite electrode modified with gold nanoparticles (GAu nano electrode) was studied by cyclic voltammetry. It was found that the graphite electrode-Au nanoparticles show an electrocatalytic activity towards the oxidation of Cys in 0.1M NaOH. At 0.05 V, there is an "inverse" maximum in the cathodic voltammogram of Cys. Using a G-Au nano electrode, the dependence of the peak current of the "inverse" maximum on Cys concentration was linear in the range from 1 to 14 pM, and the detection limit was 0.6 pM. The proposed analytical method is simple, rapid and sensitive.

Язык оригиналаАнглийский
Страницы (с-по)2405-2410
Число страниц6
ЖурналJournal of Solid State Electrochemistry
Том16
Номер выпуска7
DOI
СостояниеОпубликовано - июл 2012

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ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Materials Science(all)

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