COD快速分析仪的开发和研制
2013-04-03 12:59:54 益择发布张中海方艳菊袁园丁红春金利通
(华东师范大学化学系上海200062)
E—mail:ltjin@chem.ecnu.edu.ca
摘要根据纳米TiO2光催化原理,开发研制了一种以光度分析为检测手段的COD快速分析仅。本仪器检测时间短
消解时间在10min以内,操作简单,测量精密度高,能同时测定各类废水及地表水的COD值,且与标准法有良好的相关性
大大降低了对环境的二次污染,实现了对水体中COD值的快速分析。
关键词化学需氧量(COD); 光催化氧化; 快速分析仪
中图分类号0652.2;X132.2
The Developm ent of Fast C0D Detection Instrument
Zhang Zhonghai,Fang Yanju,Yuan Yuan,Ding Hongchun,Jin Litong
(Department of Chemistry,East China Normal University,Shanghai 200062,China)
Abstract A fast COD detection instrument by means of spectrophotometry was developed based on the photocata—
lytic theory of the nan o—semiconductor materia1.The instrument has such advan tages,such as the short detective time of
the single sample,which just needs less 10 min to degrade one sam ple,convenient operation,high precision and less
secondary pollution.Then,the an alyzer could not only detect the high COD values of wastewater,but also the low COD
values of groundwater,respectively,and it was considered that the values obtained by proposed method could be reliably
correlated with the COD values obtained using the conventional methods.Th us,it showed a promising prospect for
determining the COD values,
Key words Chemical oxygen demand(C0D);photocatalytic oxidation;fast detection instrument
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