Biosensor for the evaluation of biochemical oxygen demand using photocatalytic pretreatment

被引：16

作者：

Chee, GJ ^{[1
]}

Nomura, Y ^{[1
]}

Ikebukuro, K ^{[1
]}

Karube, I ^{[1
]}

机构：

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

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2001年 / 80卷 / 01期

关键词：

BOD sensor; biosensor; Pseudomonas putida; artificial wastewater; photocatalysis; TiO2; UV; pretreatment;

D O I：

10.1016/S0925-4005(01)00883-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A highly sensitive biochemical oxygen demand (BOD) sensor using photocatalytic pretreatment was developed to evaluate low BOD levels in river waters. The photocatalytic oxidation was carried out in a commercial TiO2 as a semiconductor and a 6 W black-light tube as light sources. The photocatalytic oxidation was investigated about the effects of irradiation times, TiO2 concentrations, and pH on the sensor response. The optimal irradiation time was 4 min. TiO2 concentrations gave the optimum response to the BOD sensor at 1% (w/v). The sensor response was increased with increasing pH. The sensor responses obtained by photocatalysis to river samples were higher than those obtained without photocatalysis, A fairly good correlation between the values obtained by the photocatalytic pretreatment method and BOD5 was acquired. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：15 / 20

页数：6

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