Electrochemical detection of ascorbic acid and serotonin at a boron-doped diamond electrode modified with poly(N,N-dimethylaniline)

Authors: Park, Soo-Gil; Park, Jong-Eun; Cho, Eun-In; Hwang, Jin-Hee; Ohsaka, Takeo

Source: Research on Chemical Intermediates, Volume 32, Numbers 5-6, 2006 , pp. 595-601(7)

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Abstract:

The electrochemical oxidation of ascorbic acid (AA) and serotonin (5-HT) at a boron-doped diamond (BDD) electrode modified with poly(N,N-dimethylaniline) (PDMA) has been studied. The oxidation potentials of 5-HT and AA overlapped after mixing of the two chemicals, due to interference of AA at the bare BDD electrode. However, after modifying the BDD electrode with a cationic polymer (PDMA), the oxidation peaks of 5-HT and AA were separated. PDMA-coated BDD electrodes can be used for simultaneous detection of these species.

Keywords: ELECTROPOLYMERIZATION; BORON-DOPED DIAMOND ELECTRODE; ASCORBIC ACID; SEROTONIN; SQUARE WAVE VOLTAMMETRY

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156856706777973736

Publication date: 2006-05-01