Determination of trace inorganic anions in anionic surfactants by single-pump column-switching ion chromatography  

作　　者：Jia Jie Zhang Hai Bao Zhu Yan Zhu 

机构地区：[1]Department of Chemistry,Zhejiang University,Hangzhou 310028,China [2]Zhejiang Academy of Medical Sciences,Hangzhou 310013,China

出　　处：《Chinese Chemical Letters》2012年第7期835-838,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.20775070 and J0830413);Zhejiang Provincial Natural Science Foundation of China(Nos.R4080124 and J20091495)

摘　　要：An ion chromatography method has been proposed for the determination of three common inorganic anions（chloride,nitrate and sulfate） in anionic surfactants using a single pump system.The new system consists of an ion exclusion column,a concentrator column,and an anion exchange column connected in series via two 6-ports valves in a Dionex ICS-2000 ion chromatograph.The valves were switched several times for removing surfactants,concentrating and separating the three anions.The chromatographic conditions were optimized.Detection limits（S/N = 3） were in the range of 0.10-0.68μg/L.The relative standard deviations（RSDs） of peak area were less than 4.6%.The recoveries were in the range of 84.1-112.6%.An ion chromatography method has been proposed for the determination of three common inorganic anions（chloride,nitrate and sulfate） in anionic surfactants using a single pump system.The new system consists of an ion exclusion column,a concentrator column,and an anion exchange column connected in series via two 6-ports valves in a Dionex ICS-2000 ion chromatograph.The valves were switched several times for removing surfactants,concentrating and separating the three anions.The chromatographic conditions were optimized.Detection limits（S/N = 3） were in the range of 0.10-0.68μg/L.The relative standard deviations（RSDs） of peak area were less than 4.6%.The recoveries were in the range of 84.1-112.6%.

关 键 词：Anionic surfactants Single pump COLUMN-SWITCHING 

分 类 号：X832.02[环境科学与工程—环境工程] TQ423.11[化学工程]