使用离子色谱法测定次氯酸钠中氯酸盐、亚氯酸盐

摘要

当前出于安全等因素的考虑,次氯酸钠替代液氯消毒逐渐成为趋势.但是次氯酸钠是次氯酸盐,含有次氯酸根离子ClO-,其中氯的氧化态为+1.次氯酸盐常以溶液态存在,不稳定,会发生歧化反应生成亚氯酸盐、氯酸盐和氯化物,且产生的亚氯酸盐、氯酸盐这两种消毒副产物存在某些毒性问题.%At present,for the consideration of safety and other factors,sodium hypochlorite instead of liquid chlorine has gradually become a trend.However,sodium hypochlorite is a salt of hypochloric acid and contains the hypochlorite ion ClO-,in which the oxidation state of chlorine is+1.Hypochlorite is often found in solution state and is unstable,and can be disproportionate to produce chlorate,chlorate and chloride.The two kinds of disinfection by-products produced by chlorate and chlorate have some toxic problems.