摘要
采用快速密闭催化消解法测定废水COD时,讨论了消解温度、消解时间、测定范围和废水种类等因素对测定结果的影响。结果表明,该方法测定COD的优化条件:COD测定范围50～1 000 mg/L,消解温度150℃、时间60 min,测定结果与标准品及国标法相比,其相对误差<5%。
This paper discusses the use of Fast Airtight Catalysis and Digestion Method to determine the COD of wastewater.The influence factors of the digestion temperature,digestion time,determine range and type of waste water on the determination results are given in the paper.The best conditions to determine wastewater COD are gotten as follows: COD measurement range is 50～1 000 mg/L,digestion time is 60min,digestion temperature is 150 ℃.The measured results are compared with the national standard method with the relative error<5%.
出处
《化工生产与技术》
CAS
2011年第5期52-54,58,共4页
Chemical Production and Technology
关键词
COD
消解
光度法
废水
chemical oxygen demand
digestion
spectrophotometry
wastewater
