摘要
对测定废水中COD_(Cr)的自动消解、自动比色测定进行了可行性实验研究。在封密的玻璃管内,废水在200℃恒温消解20min后,采用光电比色法,在590nm波长处测定吸光度值。实验结果,回归分析的相关性在0.95以上,精密度实验的相对标准偏差为0.3％。用设计的自动连续测定技术,与标准分析方法同步测定某些废水中的COD值,其相对误差在3.22％～1.89％之间。
Feasibility study on automatic digestion and determination of CODcr in wastewater was presented. In the sealed vessels, digested the wastewater at 200癈 constant temperature for 20 minutes, and measured its absorption power at 590mm by using photoelectric co-lorimetry. The result showed that the correlation of regression analysis was over 0.95, and the relative standard deviation of precision was 0.3%. By using this proposed technique for measuring COD, the relative deviation was 3.2%-1.89%.
出处
《上海环境科学》
CAS
CSCD
1994年第5期12-14,共3页
Shanghai Environmental Sciences
关键词
水质监测
自动监测
工业废水
化学耗氧量
Water quality monitoring Automatic monitoring Industrial wastewater COD
