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题名: Simultaneous determination of inorganic cations and anions by dual opposite ends injection coupled with capillary electrophoresis with capacitively contactless conductivity detection
作者: Tan, F;  Yang, BC;  Guan, YF
关键词: capillary electrophoresis ;  capacitively coupled contactless conductivity detection ;  inorganic ions
刊名: CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
发表日期: 2005-03-01
卷: 33, 期:3, 页:313-316
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: Capillary electrophoresis with capacitively coupled contactless conductivity detection ( C4D) was used for the simultaneous determination of inorganic anions and cations by dual opposite ends introduction. The effects of the alternating current voltage and frequency on the detection sensitivity of C4D, the conceptration and pH of 2-(N-morpholino) ethanesulfonic acid (MES)/histidine (His) running buffer, and the injection mode of sample on the separation of cations and anions were studied. Twelve inorganic cations and anions were determined in less than 4 minutes by the injection mode of cations being first introduced, followed by anions from the oppositecapillary end under the best conditions, which were vltage 200 V, frequency of 200 kHz, 20 mmol/L MES/ 15 nunol/L at pH 5. 0. The detection limits of cations were 0.2 ( Na+) to 3 ( Mn2+) mu mol/L, anions 0.5 (SO42-) to 4 ( Br-) mu mol/L. The responses were linear ( correlation coefficients r = 0. 9957 similar to 0. 9999) over two orders of magnitude. The method could be used for simultaneous determination of both cations and anions in real water samples.
语种: 英语
WOS记录号: WOS:000228149200006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139667
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. Simultaneous determination of inorganic cations and anions by dual opposite ends injection coupled with capillary electrophoresis with capacitively contactless conductivity detection[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2005,33(3):313-316.
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