西安理工大学学报2011，Vol.27Issue(1)：69-73,5.
安培法直接测定水体中COD的方法研究
Research on the Determination of COD in Water by Amperometry
摘要
Abstract
A threeelectrode system with Ti/PbO2 electrode as working anode is directly used to detect COD in water by amperometry.The optimized experimental conditions are: working electrode potential is 1.4 V; electrolyte concentration is 0.02 mol/L; determination time is 1.5 min.The current value on the anode in a standard solution with different concentrations of glucose appears to have the linear relation with COD in the range of 20 ～200 mg/L, whose detection limit is 10 mg/L.The surface of Ti/PbO2 electrode is refreshed by bubbling to get good reproducibility.The method is applied to the determination of the COD in real samples with such good characteristions as simplicity, fastness and repeatability.It is found that the relative error between the determined values obtained by this method and the standard method is less than 3％.关键词
Ti/PbO2电极/安培法/化学需氧量(COD)/再生分类
化学化工引用本文复制引用
杜宝中,路蕾蕾,唐建红,孙莎,屈敏佳..安培法直接测定水体中COD的方法研究[J].西安理工大学学报,2011,27(1):69-73,5.基金项目
陕西省工业攻关计划资助项目(2009K08-17). （2009K08-17）
