加电中空纤维膜萃取-离子色谱法测定乙酸丁酯中的无机阴离子  

Determination of Inorganic Anions in n-Butyl Acetate by Ion Chromatography with Electromembrane Extraction Method

作　　者：胡真真[1,2] 王雷[1] 姚超英[3] 朱岩[1] 张培敏[1] 

机构地区：[1]浙江大学西溪校区化学系,杭州310028 [2]浙江大学医学院附属儿童医院,杭州310003 [3]杭州职业技术学院化工系,杭州310018

出　　处：《分析化学》2011年第8期1261-1265,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金项目(Nos.20775070;J0830413);浙江省自然科学基金(Nos.R4080124;Y4090104;Y4090078)资助

摘　　要：以去离子水为萃取剂,通过加电膜萃取装置萃取了乙酸丁酯中的无机阴离子。在600V直流电压作用下,乙酸丁酯中的4种无机阴离子经中空纤维膜膜孔进入膜内的去离子水中,采用离子色谱对萃取液进行分析。最佳萃取条件为:施加电压600V;搅拌速度600r/min;萃取时间5min。应用本方法测定乙酸丁酯样品,4种无机阴离子的线性范围为0.01～1.0mg/L;加标回收率为95%～105%;检出限为0.001～0.050mg/L。实验表明,加电中空纤维膜萃取-离子色谱法快速有效。An electromembrane extractor was set up to extract inorganic anions fromn-butyl acetate using dei-onized water.Four inorganic anions in n-butyl acetate migrated through the pores of a polypropylene hollow fiber membrane,and were transported into deionized water inside the lumen of the hollow fiber by the appli-cation of 600Vd.c.Then the acceptor solution was analyzed by ion chromatography.The optimal extraction conditions were 600Vof applied voltage,600r/min of stirring speed and 5min of extraction time.The pro-cedure was applied to analyze inorganic anions in real n-butyl acetate sample with recoveries in the range of 95%-105%,which corresponded to linear range of 0.01-1mg/L and detection limits（LOD）of 0.001-0.050mg/L.The experimental results demonstrate that the proposed method is fast and effective.

关 键 词：无机阴离子 乙酸丁酯 加电中空纤维膜萃取 离子色谱 

分 类 号：O623.624.1[理学—有机化学] O657.75[理学—化学]