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题名: Determination of trace Zn2+ by capillary electrophoresis with field-amplified sample injection and high voltage contactless conductivity detection
作者: Tan, F;  Yang, BC;  Guan, YF
关键词: capillary electrophoresis ;  field-amplified sample injection ;  contactless conductivity detection ;  zinc ion
刊名: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
发表日期: 2005-05-10
卷: 26, 期:5, 页:825-828
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Analysis of trace Zn2+ by capillary electrophoresis with field-amplified sample stacking(FASS) and high voltage capacitively coupled contactless conductivity detection(C4D) was presented. 2-(N-Morpholino) ethanesulfonic acid(MES)/histidine (His) was used as the separation electrolyte. The effects of MES/His concentration in the sample matrix, and the injection time on the effective stacking efficiency, and the concentration of the separation electrolyte on the sensitivity were studied. Zn2+ was dissolved in deionized water and separated in 10 mmol/L MES/His (pH = 4.9) buffer. The C4D using FASS yielded sensitivity enhancement with respect to non-stacking injection mode in excess of three orders of magnitude (1.3 X 10(3)) and a limit of detection (LOD) 5 nmol/L to Zn2+. There was a linear relationship between the response of peak area and concentration of Zn2+ in the range from 10 to 1 000 nmol/L(R=0.9995). The method can be used for determination of Zn2+ of trace level.
关键词[WOS]: STACKING
语种: 英语
WOS记录号: WOS:000229296100009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139696
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 trace Zn2+ by capillary electrophoresis with field-amplified sample injection and high voltage contactless conductivity detection[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2005,26(5):825-828.
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