UV-Visible Reflection Absorption Spectroscopy in the Presence of Convective Flow

Ming Zhao, Daniel Alberto Scherson

研究成果: Article

15 引用 (Scopus)

抜粋

A spectroelectrochemical technique is herein described in which the surface of a rotating disk electrode is used as a mirror to reflect a focused beam of Hght in the UV-vis range at a near normal incidence angle. This approach makes it possible to probe quantitatively the presence of absorbing species in the diffusion boundary layer under well-defined hydrodynamic conditions. Good agreement between theory and experiments was obtained using the oxidation of Fe(CN)6 4-as a model system. In particular, the absorbance difference at the diffusion limiting current was found to be proportional to the reactant concentration, cR, for a fixed rotation rate, ω, and proportional to ω-1/2for a fixed cR.

元の言語English
ページ(範囲)3064-3067
ページ数4
ジャーナルAnalytical chemistry
64
発行部数23
DOI
出版物ステータスPublished - 1992 1 1
外部発表Yes

ASJC Scopus subject areas

  • Analytical Chemistry

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