摘要：

二氧化氯在360 nm处有最大吸收峰,可以作为紫外分光光度法定量测定的依据.通过实验对分光光度法测定生活饮用水中二氧化氯的干扰因素、波长的选择、测定范围及精确度进行了研究.结果表明,该方法能快速准确地测定生活饮用水中低浓度的二氧化氯;低浓度二氧化氯回收率在91.4%以上,中高浓度二氧化氯回收率在89.8%～91.1%之间.

关键词: 二氧化氯, 紫外分光光度法, 饮用水, 定量测定

Abstract:

The maximum adsorption peak of ClO₂ is at 360 nm,which could be used as the basis for quantitative determination of ClO₂. Interference factors,wavelength selection,measuring range and accuracy of spectrophotometric determination of chlorine dioxide in drinking water have been studied by experiments. Results indicate that this method can rapidly and accurately determine ClO₂ in drinking water with low concentrations. The average recovery rate of low concentration ClO₂ in water is more than 91.4%,and the average recovery rate of ClO₂ with medium or high concentration in water is between 89.8%-91.1%.

Key words: chlorine dioxide, UV-spectrophotometry, drinking water, quantitative determination

中图分类号: 

• TU991.2