Selective detection method derived from a controlled diffusion process at metal-modified diamond electrodes

Takeshi Watanabe, Tribidasari A. Ivandini, Yoshihiro Makide, Akira Fujishima, Yasuaki Einaga

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

A novel, selective methodology is derived based on the difference between the diffusion processes at microelectrodes (i.e., hemispherical diffusion) and the macroelectrode (i.e., linear diffusion) in a metal-implanted boron-doped diamond electrode (metal-BDDs). As an example, the selective detection of glucose in a solution containing interference species such as ascorbic acid and uric acid is demonstrated. The electrochemical properties of BDD, which are low background current, extremely high stability, and (especially) inactivity toward glucose, play an important role in realizing these differences in the diffusion characteristics. The present methodology can be applied not only to selective glucose detection by the metal-BDD system but also to other selective detection systems.

Original languageEnglish
Pages (from-to)7857-7860
Number of pages4
JournalAnalytical chemistry
Volume78
Issue number22
DOIs
Publication statusPublished - 2006 Nov 15

ASJC Scopus subject areas

  • Analytical Chemistry

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