摘要
采用密封恒温 可见光分光光度法测定废水中的COD,研究重铬酸钾氧化测定的适宜条件.相对标准偏差为0.44%,加标回收率为94.5%～102.2%,测定范围是0～1600mg/L.适用于批量环境样品的测定.
The seal stable temperature-visible light spectrophotometry has been applied to deter mination of COD in wastewaters.The suitable condition of the determination was investigated using potassium bichromate as oxidant.The RSD is 0.44 %,the recovery rate is 94.5 %～102.2 %,the range of determination is 0～1 600 mg/L.The method is suitable for determination of batch environmental sample.
出处
《沈阳化工学院学报》
2003年第2期110-113,共4页
Journal of Shenyang Institute of Chemical Technolgy
关键词
密封恒温
可见光分光光度法
废水
COD
seal stable temperature
visible light spectrophotometry
wastewaters
COD
