摘要
本文研制了一种新型的COD自动分析仪,以抽气泵为动力,通过时间控制系统程序控制管路中各电磁阀,依次完成试剂和样品的定容、取样、消化、光度法测量和清洗等程序动作,周而复始地自动完成COD的测定全过程。本法快速,每小时可分析5—8个样品,方便和节省试剂等优点,用该仪器对模拟样品和实际样品进行了测定,数据与标准方法相吻合。该仪器精密度良好,连续10次测定的变异系数为1.9％。
An automatic COD analyzer has been designed. A pump is used as, a driving force to control operation of the eletromagnatic valves in the. pipeline, by which volume control of wastewater samples and reagents, digestion, photometric measurement and cleaning in the process are carried out orderly. These procedures can be automatically repeated for continuous monitoring. This instrument is convenient for rapid determination of COD, 5-8 samples per hour can be analyzed. The results match with the ones abtained by the standard methods, relative standard deviation is 1.9% for 10 samples determined.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1989年第4期13-16,共4页
Environmental Science
