Cu-doped polymeric-modified electrode for determination of cysteine

C. A. Martínez-Huitle, C. Carlesi Jara, M. Cerro-Lopez, M. A. Quiroz

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A simple differential pulse voltammetric method based on chitosan modified glassy carbon was used to pre-concentrate copper ions in the chitosan film. After, this electrode was employed for the quantitative determination of cysteine. The modified electrode exhibits a clear improvement of the current response. The method allowed quantifying the analyte in the range in buffer solution and a limit of detection range from 1.0×10-6 to 1.4×10-6 M was achieved. This value seems quite higher than those previously published by other authors. The results are described and discussed in the light of the existing literature.

Original languageEnglish
Pages (from-to)47-51
Number of pages5
JournalLatin American Applied Research
Issue number1
StatePublished - Jan 2011


  • Chitosan
  • Copper
  • Cysteine
  • Sensor


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