摘要
研究了利用酸性靛蓝 (λmax=610nm,pH<4)的氧化还原褪色反应 ,定量地测定了水中低水平ClO2的含量 ,本方法褪色迅速且化学计量比(1:1)恒定。该方法平均加标回收率为99.8 %。变异系数为2.22 % ,最低检出限为0.005mg/L ,具有操作简便易行、准确灵敏等优点。
In this paper,determination of low level of ClO2 is studied by using the decolorization of sodium indigotin disulfonate(λmax=610nm, pH< 4). The average recovery ratio of the method is 99.8%,the coefficient of variation(CV) is 2.22%and the lowest detection limit is 0.005mg/L. The method has simple,accurate and sensitive advantage.
出处
《哈尔滨建筑大学学报》
1999年第6期110-112,共3页
Journal of Harbin University of Civil Engineering and Architecture
基金
黑龙江省自然科学基金
关键词
二氧化氯
酸性靛蓝
示差光度法
水
chlorine dioxide
indigo carmine
determination
differential spectrophotometry
water
