摘要
目的:建立大体积直接进样-免试剂离子色谱法测定瓶装水中的溴酸盐和溴化物的方法。方法:选用IonpacAS19阴离子分析柱,在线产生10 mmol/L^35 mmol/L KOH为淋洗液,大体积直接进样,流速1.0 ml/min,电导检测器检测。结果:溴酸盐和溴化物在0 mg/L^0.10 mg/L范围内线性良好,精密度高(RSD%<3.0),溴酸盐相关系数0.9996,回收率在97.0%~104.5%之间,最低检出限为0.78μg/L;溴化物相关系数0.9992,回收率在92.0%~105.5%之间,最低检出限为0.25μg/L。结论:方法灵敏、快速、简单,可适用于瓶装水中溴酸盐和溴化物含量的检测。
Objective：To develop a method for determination of bromate and bromide in bottled drinking water by free reagent ion chromatography with Large volume injection.Methods： The method was based on large volume injection and IC separation under the condition of gradient eluent with 10 mmol/L^35 mmol/L KOH generation on line and flow rate of 1.0 ml/min by using the IonPac AS19 analytical column and suppressed condutivity detector.Results：This method had good linear relatity in the range of 0 mg/L^0.10 mg/L and good analytic precision（RSD%3.0）.The correlation coefficient was 0.9996 for bromate and 0.9992 for bromide.The recovery rate was 97.0%~104.5% for bromate and 92.0%~105.5% for bromide.The detection limit was 0.78 μg/L for bromate and 0.25 μg/L for bromide.Conclusion： This method is sensitive,rapid and simple.It is available to determine the bromate and bromide in bottled drinking water by free reagent ion chromatography.
出处
《中国卫生检验杂志》
CAS
2011年第2期358-360,共3页
Chinese Journal of Health Laboratory Technology
关键词
溴酸盐
溴化物
离子色谱
瓶装水
大体积进样
Bromate
Bromide
Ion chromatography
Bottled drinking water
Large volume injection
