微波消解无汞盐光度法测定COD

Spectrophotometric Determination of COD Using MicrowaveDigestion and Eliminating Mercury Sulfate

本法与标准法比较，省时间，省电，省试剂，不使用汞盐，二次污染少；采用光度法测定，操作简便；对氯离子浓度较高的水样，测定效果较好；适于批量水样的测定，且可进行间断性的测试．经实验证明，此法具有较好的准确度和精密度．

This paper deals with a new method to determine COD in wastewaterCompared with the traditional standard method,the new method is characterized by sawing time,conserving electrical power and economizing reagentsBy removing mercury sulfate,the secondary pollution is reduced with spectrophotometric method,the operation procedures are simplifiedThe new method is suitable for determining COD in the wastewater containing higher chlorideIn addition,it facilitates the determination of wastewater in batches and the measurement of samples in stagesIt is shown from the experiement that the new method is of higher accuracy and precision