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题名: Determination of heavy metal ions by capillary electrophoresis with contactless conductivity detection after field-amplified sample injection
作者: Tan, F;  Yang, BC;  Guan, YF
通讯作者: 关亚风
刊名: ANALYTICAL SCIENCES
发表日期: 2005-08-01
卷: 21, 期:8, 页:955-958
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 105
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: A method has been developed for determining of heavy metal ions by field-amplified sample injection capillary electrophoresis with contactless conductivity detection. The effects of the 2-N-morpholinoethanesulfonic acid/histidine (MES/His) concentration in the sample matrix, the injection time and organic additives on the enrichment factor were studied. The results showed that MES/His with a low concentration in the sample matrix, an increase of the injection time and the addition of acetonitrile improved the enrichment factor. Four heavy metal ions (Zn2+, Co2+, Cu2+ and Ni2+) were dissolved in deionized water, separated in a 10 mM MES/His running buffer at pH 4.9 and detected by contactless conductivity detection. The detection sensitivity was enhanced by about three orders of magnitude with respect to the non-stacking injection mode. The limits of detection were in the range from 5 nM (Zn2+) to 30 nM (Cu2+). The method has been used to determine heavy metal ions in tap water.
关键词[WOS]: ATOMIC EMISSION-SPECTROMETRY ;  MASS-SPECTROMETRY ;  STACKING ;  CADMIUM ;  LEAD ;  SYSTEM ;  COPPER ;  CHROMATOGRAPHY ;  CHROMIUM ;  POLARITY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000231180200012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93479
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Analyt Chem & Microinstrumentat, Dalian 116012, Peoples R China

Recommended Citation:
Tan, F,Yang, BC,Guan, YF. Determination of heavy metal ions by capillary electrophoresis with contactless conductivity detection after field-amplified sample injection[J]. ANALYTICAL SCIENCES,2005,21(8):955-958.
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