DPD光度法测定二氧化氯

Spectrophotometric Determination of Chlorine Dioxide with DPD

本文提出了以单质碘溶液作为测定二氧化氯标准物质的方法．试验结果表明．该方法是可行的．用５ｃｍ比色皿在０．０３５～１．０ｍｇ／Ｌ范围内吸光度与二氧化氯浓度是显著的线性关系．该方法操作方便，测定精度高，可用于二氧化氯低浓度的测定．同时，该方法还可用作测定合氧等的标准物质，具有广泛的实用性．

iI this paper pure iodine solutions used to measure concentrations of chlorine dioxide solutions are presented. The results of the experiment indicate that alinear relation is obtained between the absorbance and the anount of chloriae dioxide in the range of 0. 035 to 1. 0 mg/L by using 5cm cell. The analytical approaches are simple and suitable for measaring low chlorine dioxide concentrations. Moreover. the method can be used to measure chlorine concentrations.