Determination of underivatized amino acids by high-performance liquid chromatography and electrochemical detection at an amino acid oxidase immobilized CuPtCI6 modified electrode

Jianhong Pei, Xiao Yuan Li*

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

25 Citations (Scopus)

Abstract

An amperometric sensor for amino acids based on the immobilization of amino acid oxidase on the surface of a CuPtCl6/GC is described. The amperometric current is due to the oxidation of H2O2 liberated during the enzyme reaction on the surface of the enzyme electrode. The electrode response characteristics as well as kinetic parameters have been evaluated. The enzyme electrode was characterized as an electrochemical biosensor, which was used as detector in high performance liquid chromatography (HPLC) for the determination of a mixture of amino acids with satisfactory results.

Original languageEnglish
Pages (from-to)707-713
Number of pages7
JournalFresenius' Journal of Analytical Chemistry
Volume367
Issue number8
DOIs
Publication statusPublished - 2000

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