生活饮用水二氧化氯消毒副产物检测技术的研究与应用

建立生活饮用水中二氧化氯消毒副产物氯酸盐、亚氯酸盐及氟化物、氯化物、硝酸盐、硫酸盐等6种无机阴离子的同时测定方法。以离子色谱法为测试手段,对采用二氧化氯消毒的生活饮用水出厂水及管网水中氯酸盐、亚氯酸盐含量进行测定。结果:分析方法的线性相关系数在0.9990-0.9994之间,,测试值的相对标准偏差RSD为1.49%-4.12%,各组份的检出限在0.0050-0.0225mg/L之间,回收率为96.0%-102.0%。方法简单、快速、准确、灵敏,适于大批量水样分析。出厂水及末梢水中二氧化氯消毒产生的消毒副产物均符合国标。

Study and application on determination of byproduct in drinking water disinfected by chlorine dioxide

To establish a mew method for quantitative detection of six inorganic anions in drinking water including Chlorit , Chlorate --the byproducts in drinking water disinfected by chlorine dioxide , Fluoride, Chloride, Nitrate, Sulfate at the same time. Ion chronatograph was applied to determine the quantities of Chlorite, Chlorate in the treated water and pipeline networks disinfected by chlorine dioxide. Result： this method relativity： 0. 9990-0. 9994, RSD＇S obtained were from 1. 49 % to 4. 12% , The threshold of detection ： 0. 0050 - 0. 0225mg/ L. and the recoveries were from 96. 0 to 102. 0%. Its advantages are simple operation, quickness, high sensitivity and precise results. This method can be applied widely and suitable for trace analysis of water samples. The toxic byprod- uct content in the treated water and pipeline networks disinfected by chlorine dioxide meets the stand- ard of daily drinking water.