高氯离子水样中COD的测定

摘要

According to better correlation between chloride and COD, the apparent value of water sample by GB11914-89 Titration Method and without masking of mercuric sulfate. The true COD value was got by subtracting chloride in water sample.%根据氯离子和COD之间有较好的相关性，介绍了在不用硫酸汞掩蔽的状态下，按国家标准GB11914—89重铬酸盐法测出水样的表观COD值，减去水样中氯离子相对应的COD值，即得水样的真实COD值的操作方法。