摘要
目的：建立饮用水中痕量溴酸盐和溴化物的淋洗液在线发生离子色谱测定方法。方法：水样在IonPac AS23型阴离子柱（250mm×2．0mm i．d．，5μm）上，采用ASRS-ULTRAII 4mm阴离子抑制器，利用20mmol／L氢氧化钾溶液等度洗脱和DS6抑制电导检测器检测。结果：溴酸盐和溴化物在0．8200．0μg／L范围均具有良好的线性，相关系数均大于0．9990，检出限分别为0．5和0．8μg／L，回收率分别在90．2％～99．4％和86．6％-94．4％范围，RSD均小于5．0％。结论：建立的方法可用于饮用水中溴酸盐和溴化物残留的测定，结果满意。
Objectives： To establish a sensitive method for the determination of bromate and bromide residues in drinking water by ion chromatography （IC） on line eluent generator. Methods：The separation was performed on an IonPac AS23 analytical column （250 mm ×2. 0 mm i. d. , 5 μm） and an IonPac AG23 guard column （50 mm ×2. 0 mm i. d. , 5 μm） with an ASRS -ULTRAII 2 mm Suppressor by 20 mmol/L potassium hydroxide solution in isocratic eluent with a DS6 suppressed conductivity detector. Results： The linear range was 0. 5 - 200. 0 μg/L for bromate and 0. 8 - 200. 0 μg/L for bromide, both with correlation coefficients of more than 0. 9992, the limits of quantitation were found to be 0. 5 μg/L for bromate and 0. 8 μg/L for bromide, respectively. The recoveries were between 90. 2% - 99.4% for bromate and 86. 6% - 94.4% for bromide, both RSD were less than 5.0%. Conclusion：The developed method was satisfied with the residual determination for bromate and bromide in drinking water.
出处
《中国卫生检验杂志》
CAS
2008年第7期1290-1292,共3页
Chinese Journal of Health Laboratory Technology
关键词
淋洗液在线发生离子色谱
饮用水
溴酸盐
溴化物
Ion chromatography on line eluent generator
Drinking water
Bromate
Bromide
