摘要
对于氯离子含量高于 2 0 0 0mg/L ,而COD值较低的废水样品 ,按硫酸汞与氯离子之比 (W/W)为 1 5∶1投加硫酸汞作掩蔽剂 ,同时扣除空白氯离子残留的COD值 ,结果准确可靠。
Waste water sample,whose chlorine ion is higher than 2 000 mg/L and COD value is low,is added mercury sulfate as screening agent.The ratio of mercury sulfate and chlorine ion is 15∶1 and the COD value of retained chlorine ion the blank reagent is deducted.The result is accurate and reliable,which exteneds the usage range of standard method.
出处
《干旱环境监测》
2002年第1期61-62,共2页
Arid Environmental Monitoring
关键词
氯离子
硫酸汞
COD
chlorine ion
mercury sulfate
COD
