等度离子色谱法同时测定饮用水中4种消毒副产物
Simultaneous Determination of Four Disinfection By-Products in Drinking Water by Plasma Chromatography
罗玉琴 1李华冰 2莫勤妹3
作者信息
- 1. 崇左市疾病预防控制中心,广西崇左 532200
- 2. 崇左市食品药品检验所,广西崇左 532200
- 3. 崇左市农业综合检测中心,广西崇左 532200
- 折叠
摘要
目的:建立饮用水中亚氯酸盐、氯酸盐、二氯乙酸及三氯乙酸的离子色谱检测方法.方法:水样经0.22 µm滤膜过滤,使用DIONEX ICS-900离子色谱仪检测,6 mmol·L-1 KOH等度洗脱,保留时间定性,外标法定量.结果:该方法线性关系良好(r＞0.997),精密度高(相对标准偏差＜10%),样品加标平均回收率为 80.6%～115.3%.结论:该方法操作快捷、简单高效,用OH-作为淋洗液可以降低背景噪音,使得低含量的消毒副产物检测结果更加准确、可靠.
Abstract
Objective:To establish ion chromatography method for the detection of chlorite,chlorate,dichloroacetic acid and trichloroacetic acid in drinking water.Method:The water samples were filtered through a 0.22 μm aqueous membrane,and then tested by DIONEX ICS-900 ion chromatograph,6 mmol·L-1 KOH was eluted isocracies,retention time was qualitative,and external standard method was quantified.Result:The method had a good linear relationship(r＞0.997),high precision(relative standard deviation less than 10%),and the average recovery rate of samples spiked was 80.6%to 115.3%.Conclusion:The method is fast,simple and efficient.At the same time,OH-is used as the eluent,which can reduce the background noise,so that the detection results of low-level disinfection by-products are more accurate and reliable.
关键词
等度/离子色谱法/饮用水/消毒副产物Key words
equivalent/ion chromatography/drinking water/disinfection by-products引用本文复制引用
出版年
2024
NETL
NSTL
万方数据