化学需氧量(COD)快速测定新方法研究进展  

Progress in new methods for rapid determination of chemical oxygen demand (COD)

作　　者：郑青[1] 韩海波[2] 周保学[1] 李金花[1] 白晶[1] 蔡伟民[1] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240 [2]上海交通大学分析测试中心,上海200240

出　　处：《科学通报》2009年第21期3241-3250,共10页Chinese Science Bulletin

基　　金：国家高科技研究发展计划(批准号:2009AA063003);国家自然科学基金(批准号:20677039);上海市科委纳米专项(批准号:05nm05004);教育部新世纪优秀人才支持计划(批准号:NCET-04-0406)资助项目

摘　　要：化学需氧量是反映水体有机污染程度的综合性指标,是我国控制污染总量排放的重要水质参数,但其常用的标准测定方法具有操作烦琐、分析时间长、成本高且二次污染严重的缺点.本文综述了近年来提出的新型化学需氧量测定方法,特别是基于TiO2纳米管阵列的光电催化法,这些方法以羟基自由基为主要氧化剂与有机物发生反应为基础,向着快速、准确、低耗、无二次污染、在线监测的全新方向发展,为环境中有机污染物的监测与控制提供了一个全新的理念与思路.COD is one of the most widely used metrics in the field of water quality analysis in many countries, and is frequently used as an integrated index for representing the degree of organic pollution in water bodies. However, the standard determination methods of COD are plagued by several drawbacks including tedious time-consuming process, high cost and severe secondary pollution. In attempts to measure COD rapidly, accurately, in-situ, with low cost and without secondary pollution, new methods based upon the reaction between hydroxyl radicals and organic compounds have been developed recently and are reviewed in this paper, with emphasis on the photoelectrocatalyUc determination of COD using titania nanotube arrays.

关 键 词：化学需氧量 光电催化 电化学 二氧化钛 

分 类 号：X832[环境科学与工程—环境工程] TV121.2[水利工程—水文学及水资源]