应用离子色谱法同时测定饮用水中5种阴离子的含量

Application of ion chromatography in determination of five anions in drinking water

本文探讨用离子色谱法和传统方法对生活饮用水中的氟化物(F-)、氯化物(Cl-)、亚硝酸盐氮(NO-2)、硝酸盐氮(NO-3)和硫酸盐(SO_(4)^(2-))5种无机阴离子浓度同时进行检测,并对应用方法和结果进行了比较分析,结果显示:采用离子色谱法绘制的各离子工作曲线的线性相关系数均大于0.9990,加标回收率和相对偏差均符合要求,相较于传统方法回收率更好,相对偏差更小。研究结论表明,用离子色谱方法分析饮用水较传统的分析方法具有更加准确、高效、快速、生态环保等特点,更加适用于现代饮用水的日常检测工作。

In this paper,the concentration of fluoride(F-),chloride(Cl-),nitrite nitrogen(NO-2),nitrate nitrogen(NO-3)and sulfate(SO_(4)^(2-))in drinking water was determined simultaneously by ion chromatography and traditional methods,and the application methods and results were compared and analyzed.The analysis results show that the linear correlation coefficient of each ion working curve made by ion chromatography is greater than 0.999,and the recovery rate and relative deviation meet the requirements.Compared with the traditional method,the recovery rate is better and the relative deviation is smaller.Conclusion:Compared with traditional analysis methods,ion chromatography is more accurate,efficient,rapid,eco-friendly and more suitable for the daily detection of modern drinking water.