Photocatalytic sensor for chemical oxygen demand determination based on oxygen electrode

被引：85

作者：

Kim, YC ^{[1
]}

Lee, KH ^{[1
]}

Sasaki, S ^{[1
]}

Hashimoto, K ^{[1
]}

Ikebukuro, K ^{[1
]}

Karube, I ^{[1
]}

机构：

[1] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan

来源：

ANALYTICAL CHEMISTRY | 2000年 / 72卷 / 14期

关键词：

D O I：

10.1021/ac9911342

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页码：3379 / 3382

页数：4

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