首页 | 本学科首页   官方微博 | 高级检索  
     检索      

基于低流速雾化器和可拆卸接口的毛细管电泳-电感耦合等离子体质谱联用技术应用于汞的形态分析
引用本文:李保会,余莉萍,王朝晖,刘礼文,严秀平.基于低流速雾化器和可拆卸接口的毛细管电泳-电感耦合等离子体质谱联用技术应用于汞的形态分析[J].光谱学与光谱分析,2005,25(8):1336-1338.
作者姓名:李保会  余莉萍  王朝晖  刘礼文  严秀平
作者单位:1. 南开大学化学院分析科学研究中心,天津,300071
2. 天津大学理学院化学系,天津,300072
基金项目:国家重点基础研究发展计划项目(2003CB415001),国家自然科学基金(20437020),高等学校博士学科点专项科研基金(20040055038)资助项目
摘    要:报道了基于低流速雾化器(MicroMist)和随意拆卸接口的毛细管电泳(CE)-电感耦合等离子体质谱联用技术,并将其应用于汞的形态分析。这种可随意拆卸接口避免了毛细管冲洗过程中对检测器的污染。无机汞和甲基汞在下列电泳条件下得到了基线分离:CE分离毛细管为45cm×75μm石英熔硅毛细管,电解质溶液为30mmol.L-1H3BO3 10%CH3OH(pH8.7),分离电压为22.5kV。汞形态的迁移时间和峰面积的精密度分别是(RSD,n=5)分别为3.5%~3.8%和2.3%~5.1%。甲基汞和无机汞的检出限(3σ)分别是47和48μg.L-1。

关 键 词:电感耦合等离子体质谱  联用技术  形态分析  毛细管电泳  
文章编号:1000-0593(2005)08-1336-03
收稿时间:04 18 2005 12:00AM
修稿时间:06 20 2005 12:00AM

Speciation Analysis of Mercury by Capillary Electrophoresis On-Line Coupled with Inductively Coupled Plasma Mass Spectrometry Based on a Micro Mist Nebulizer and a Removable Interface
LI Bao-hui,YU Li-ping,WANG Zhao-hui,LIU Li-wen,YAN Xiu-ping.Speciation Analysis of Mercury by Capillary Electrophoresis On-Line Coupled with Inductively Coupled Plasma Mass Spectrometry Based on a Micro Mist Nebulizer and a Removable Interface[J].Spectroscopy and Spectral Analysis,2005,25(8):1336-1338.
Authors:LI Bao-hui  YU Li-ping  WANG Zhao-hui  LIU Li-wen  YAN Xiu-ping
Abstract:A method for mercury speciation analysis was developed by CE-ICP-MS with a Micro Mist nebulizer and a removable interface. Contamination of ICP-MS detector by the rising solution was avoided with the use of a removable interface during capillary rinsing. Baseline separation of methylmercury (MeHg) and inorganic mercury (Hg2+) was obtained by CE in a 45 cm x 75 microm i.d. fused-silica capillary at 22.5 kV, while a mixture of 30 mmol(-1) H3BO3 + 10% CH3OH (pH 8.7) acted as running electrolyte. The precisions (RSD, n=5) of migration time and peak area for the mercury species were in the ranges of 3.5%-3.8% and 2.3%-5.1%, respectively. The limits of detection (3sigma) of MeHg and Hg2+ were 47 and 48 microg x L(-1), respectively.
Keywords:Inductively coupled plasma mass spectrometry  Hybrid techniques  Speciation analysis  Capillary electrophoresis  Mercury
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号