文献类型：期刊文献

中文题名：IC-ICP-MS联用技术同时测定饮用水中砷、铬、碘、溴四种元素的不同形态

英文题名：Simultaneous determination for elements species of arsenic,chromium,iodide and bromine in drinking water by IC-ICP-MS

作者：王艳萍[1];郭于枫[2];张玲帆[3]

机构：[1]赛默飞世尔科技(中国)应用中心,上海200125;[2]普研(上海)标准技术服务股份有限公司,上海201210;[3]华东理工大学分析测试中心,上海201206

年份：2021

卷号：40

期号：7

起止页码：827

中文期刊名：分析试验室

外文期刊名：Chinese Journal of Analysis Laboratory

收录：CSTPCD;;EI(收录号：20224413025169);北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家自然科学青年基金项目(21407050);华东理工大学分子工程与材料科学青少年科学创新实践工作站(19DZ2330400)项目资助。

语种：中文

中文关键词：离子色谱;电感耦合等离子体质谱法;饮用水;元素形态

外文关键词：ion chromatography(IC);inductively coupled plasma mass spectrometry(ICP-MS);drinking water;element species

摘要：建立了一种利用离子色谱仪(IC)与电感耦合等离子体质谱仪(ICP-MS)联用同时测定饮用水中砷、铬、碘、溴4种元素11种形态的方法。使用IonPac AG 19(4 mm×50 mm)和AS 19(4 mm×250 mm)型离子色谱柱,在流速为1.2 mL/min及(NH4)_(2)CO_(3)/NH_(4)NO_(3)(50 mmol/L/100 mmol/L)混合淋洗液下进行砷甜菜碱(AsB)、二甲基砷(DMA)、亚砷酸根(As^(3+))、砷胆碱(AsC)、一甲基砷(MMA)、砷酸根(As^(5+))、碘酸根(IO_(3-))、碘离子(I^(-))、溴酸根离子(BrO_(3)^(-))、溴离子(Br^(-))、六价铬(Cr^(6+))的分离。在最佳实验条件下,11种形态可在10 min内完成分析,检出限为1.8~450μg/L(峰面积),相对标准偏差(n=6)在0.24%~3.8%之间。应用该方法对市售饮用水中的不同形态进行了分析,目标形态物质在水样品中的加标回收率为88.6%~115.1%。该方法可应用于饮用水中砷、铬、碘、溴4种元素的11种形态分析测定。
An analytical method was established for the determination of 11 species of four elements including arsenic,chromium,iodine,and bromine in drinking water,using ion chromatography( IC) with inductively coupled plasma mass spectrometry( ICP-MS). The separation of arsenic betaine( As B),dimethyl arsenic( DMA),arsenite( As^(3 +)),arsenic choline( As C),monomethyl arsenic( MMA),arsenate( As^(5 +)),iodate( IO_(3)^(-)),iodide( I^(-)),bromate( BrO_(3)^(-)),bromide( Br-) and hexavalent chromium( Cr^(6 +)) was carried out using high performance IonPac AG 19( 4 mm × 50 mm) and AS 19( 4 mm × 250 mm) ion chromatography column with ammonium carbonate/ammonium nitrate( 50 mmol/L/100 mmol/L) as mixed eluent,at a flow rate of 1. 2 m L/min. Under the optimized experimental conditions,the analysis of 11 species could be completed within 10 minutes,the detection limits were in the range of 1. 8-450 μg/L( peak area) and the relative standard deviations were between 0. 24%-3. 8%. This method was used to analyze different species in the commercially available drinking water,and the standard addition recoveries of the target species in the water samples were in the range of 88. 6%-115. 1%. The method can be applied to the daily analysis of 11 species of four elements,arsenic,chromium,iodine,and bromine in drinking water.