摘要
分析了纳米结构钛酸盐电极快速测定COD的基本原理及COD标准物质定值方法。通过对纳米结构钛酸盐表征分析,钠型钛酸盐电极具有较高的灵敏度,外加0.7 V工作电位,测定COD溶液标准物质的线性相关系数大于0.995,误差在±8%以内;与国标方法比较,测量同一水样的误差在±15%以内。纳米结构钛酸盐电极可用于测量水体COD。
The basic principle and COD measuring method were studied by nanostructured titanates elelectrode. By the characterized analysis of nanostructured titanates, the sodium titanate electrode had a higher sensitivity. With 0.7 V operating potential, the linear correlation coefficient of determinating COD solution of standard substance was more than 0.995, and the diviation was ±8%. Compared with the national standard method for measuring the actual water samples, the diviation was within ±15%. This method can be used to determine COD in water.
出处
《化学分析计量》
CAS
2014年第5期33-35,共3页
Chemical Analysis And Meterage
基金
福建省自然科学基金资助项目(2012J05018)
关键词
纳米结构
钛酸盐
测量
钠型
COD
nanostructure
titanate
COD
determination
sodium
