Photocatalytic sensor for chemical oxygen demand determination based on oxygen electrode.

Kim, Y C; Lee, K H; Sasaki, S; Hashimoto, K; Ikebukuro, K; Karube, I

Kim, Y C; Lee, K H; Sasaki, S; Hashimoto, K; Ikebukuro, K; Karube, I.

Afiliación

Kim YC; Research Center for Advanced Science and Technology, The University of Tokyo, Japan.

Anal Chem ; 72(14): 3379-82, 2000 Jul 15.

Article en En | MEDLINE | ID: mdl-10939416

RESUMEN

The construction and performance evaluation of a novel Chemical Oxygen Demand (COD) sensor is described. The sensor measures, using an oxygen electrode, a decrease of dissolved oxygen of a given sample resulting from photocatalytic oxidation of the organic compounds therein. As the photocatalyst, titanium dioxide (TiO2) fine particles adsorbed on a translucent poly(tetrafluoroethylene) (PTFE) membrane was used. The oxygen electrode with the membrane attached on its tip was used as the sensor probe. The operation characteristics of the sensor are demonstrated using an artificial wastewater and real water samples from lakes in Japan. This method is considered to be reliable, in that the observed parameter is close to the theoretical definition of chemical oxygen demand (COD), the amount of oxygen consumed for oxidation of organic compounds.

Asunto(s)

Técnicas Biosensibles; Oxígeno/análisis; Contaminación del Agua/análisis; Catálisis; Indicadores y Reactivos; Fotoquímica; Politetrafluoroetileno; Contaminantes del Agua/análisis

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Contaminación del Agua / Técnicas Biosensibles Idioma: En Revista: Anal Chem Año: 2000 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos

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