1
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Online preconcentration methodology that realizes over 2000-fold enhancement by integrating the free liquid membrane into electrokinetic supercharging in capillary electrophoresis for the determination of trace anionic analytes in complex samples. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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2
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John AS, Sidek MM, Thang LY, Sami S, Tey HY, See HH. Online sample preconcentration techniques in nonaqueous capillary and microchip electrophoresis. J Chromatogr A 2020; 1638:461868. [PMID: 33453653 DOI: 10.1016/j.chroma.2020.461868] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/21/2020] [Accepted: 12/28/2020] [Indexed: 11/19/2022]
Abstract
One of the major drawbacks of electrophoresis in both capillary and microchip is the unsatisfactory sensitivity. Online sample preconcentration techniques can be regarded as the most common and powerful approaches commonly applied to enhance overall detection sensitivity. While the advances of various online preconcentration strategies in capillary and microchip employing aqueous background electrolytes are well-reviewed, there has been limited discussion of the feasible preconcentration techniques specifically developed for capillary and microchip using nonaqueous background electrolytes. This review provides the first consolidated overview of various online preconcentration techniques in nonaqueous capillary and microchip electrophoresis, covering the period of the last two decades. It covers developments in the field of sample stacking, isotachophoresis, and micellar-based stacking. Attention is also given to multi-stacking strategies that have been used for nonaqueous electrophoresis.
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Affiliation(s)
- Annestasia Simbut John
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Mohammad Mizwaruddin Sidek
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Lee Yien Thang
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Sabita Sami
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Hui Yin Tey
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Hong Heng See
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
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3
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Chu C, Lian L, Liu C, Li J, Mao H, Jiang L, Yan J. Online preconcentration by electrokinetic supercharging for sensitive determination of berberine and jatrorrhizine in biological samples. Biomed Chromatogr 2020; 34:e4824. [DOI: 10.1002/bmc.4824] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/24/2020] [Accepted: 03/04/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Chu Chu
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou P.R. China
| | - Linmin Lian
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou P.R. China
| | - Caijing Liu
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou P.R. China
| | - Jing Li
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou P.R. China
| | - Hui Mao
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou P.R. China
| | - Luyi Jiang
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou P.R. China
| | - Jizhong Yan
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou P.R. China
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4
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Wang WF, Yang JL, Shi YP. Quality evaluation of six bioactive constituents in goji berry based on capillary electrophoresis field amplified sample stacking. Electrophoresis 2018; 39:2117-2124. [PMID: 29704253 DOI: 10.1002/elps.201800102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 04/11/2018] [Accepted: 04/22/2018] [Indexed: 11/08/2022]
Abstract
Goji berry, fruits of the plant Lycium barbarum L., has long been used as traditional medicine and functional food in China. In this work, a simple and easy-operation on-line concentration capillary electrophoresis (CE) for detection flavonoids in goji berry was developed by coupling of field amplified sample stacking (FASS) with an electroosmotic (EOF) pump driving water removal process. Due to the EOF pump and electrokinetic injection showing different influence on the concentration, the analytes injection condition should be systemically studied. Thereafter, the verification of the analytes injection conditions was achieved using response surface experimental design. Under the optimum conditions, 86-271 folds sensitivity enhancement upon normal capillary zone electrophoresis (CZE, 50 mbar × 5 s) were achieved for six flavonoids, and the detection limits ranged from 0.35 to 1.82 ng/mL; the LOQ ranged from 1.20 to 6.01 ng/mL. Eventually, the proposed method was applied to detect flavonoids in 30 goji berry samples from different habitats of China; and the results indicated that the flavonoids were rich in the eluent of 30-60% methanol, which provided a reference for extraction of goji berry flavonoids.
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Affiliation(s)
- Wei-Feng Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou, P. R. China
| | - Jun-Li Yang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou, P. R. China
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou, P. R. China
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5
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Gotti R, Amadesi E, Fiori J, Bosi S, Bregola V, Marotti I, Dinelli G. Differentiation of modern and ancient varieties of common wheat by quantitative capillary electrophoretic profile of phenolic acids. J Chromatogr A 2018; 1532:208-215. [DOI: 10.1016/j.chroma.2017.11.058] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 11/22/2017] [Accepted: 11/24/2017] [Indexed: 12/31/2022]
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6
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Lu Y, Hou X, Wang D, Zhong H. Advances of a capillary electrophoretic on-line concentration technique: Electrokinetic supercharging. J LIQ CHROMATOGR R T 2017. [DOI: 10.1080/10826076.2017.1330756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Y. Lu
- Analysis and Testing Centre, Dezhou University, Dezhou, P. R. China
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan, Shandong Province, P. R. China
| | - X. Hou
- Analysis and Testing Centre, Dezhou University, Dezhou, P. R. China
- Department of General Surgery, Dezhou People’s Hospital, Dezhou, P. R. China
| | - D. Wang
- Analysis and Testing Centre, Dezhou University, Dezhou, P. R. China
| | - H. Zhong
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan, Shandong Province, P. R. China
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7
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Integration of the free liquid membrane into electrokinetic supercharging – capillary electrophoresis for the determination of cationic herbicides in environmental water samples. J Chromatogr A 2017; 1481:145-151. [DOI: 10.1016/j.chroma.2016.12.042] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 12/12/2016] [Accepted: 12/14/2016] [Indexed: 01/20/2023]
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8
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Field-enhanced sample injection-micelle to solvent stacking in nonaqueous capillary electrophoresis. Talanta 2016; 161:165-169. [DOI: 10.1016/j.talanta.2016.08.054] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 08/15/2016] [Accepted: 08/16/2016] [Indexed: 11/22/2022]
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9
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Abdul Karim N’I, Wan Ibrahim WA, Sanagi MM, Abdul Keyon AS. Online preconcentration by electrokinetic supercharging for separation of endocrine disrupting chemical and phenolic pollutants in water samples. Electrophoresis 2016; 37:2649-2656. [DOI: 10.1002/elps.201600207] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/22/2016] [Accepted: 07/09/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Nurul ’I. Abdul Karim
- Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; Johor Bahru Malaysia
| | - Wan A. Wan Ibrahim
- Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; Johor Bahru Malaysia
| | - Mohd M. Sanagi
- Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; Johor Bahru Malaysia
| | - Aemi S. Abdul Keyon
- Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; Johor Bahru Malaysia
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10
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Thang LY, Breadmore MC, See HH. Electrokinetic supercharging in nonaqueous capillary electrophoresis for online preconcentration and determination of tamoxifen and its metabolites in human plasma. J Chromatogr A 2016; 1461:185-91. [DOI: 10.1016/j.chroma.2016.07.067] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 07/17/2016] [Accepted: 07/25/2016] [Indexed: 01/28/2023]
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11
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Mai TD, Oukacine F, Taverna M. Multiple capillary isotachophoresis with repetitive hydrodynamic injections for performance improvement of the electromigration preconcentration. J Chromatogr A 2016; 1453:116-23. [DOI: 10.1016/j.chroma.2016.05.048] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 05/09/2016] [Accepted: 05/12/2016] [Indexed: 12/28/2022]
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12
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Large-Volume Sample Staking of Rice Polyphenols Prior to Their Determination by Non-aqueous Capillary Electrophoresis. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-015-0394-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Wang WF, Ju FR, Ran YL, Zhang HG, Chen XG. Detection of biogenic amines in C57BL/6 mice brain by capillary electrophoresis electrokinetic supercharging. Analyst 2016; 141:956-62. [DOI: 10.1039/c5an01642h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile, sensitive EKS/MEKD-PDAD method was developed for the detection of neurotransmitters in C57BL/6 mice brain.
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Affiliation(s)
- Wei-feng Wang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Department of Chemistry
| | - Fu-rong Ju
- School of Life Science
- Lanzhou University
- Lanzhou 730000
- China
| | - Yan-li Ran
- School of Life Science
- Lanzhou University
- Lanzhou 730000
- China
| | - Hui-ge Zhang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Department of Chemistry
| | - Xing-guo Chen
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Department of Chemistry
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14
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Application of capillary electrophoresis with electrokinetic supercharging and sweeping for the on-line preconcentration of phenolic acids. Anal Bioanal Chem 2015; 407:7093-100. [DOI: 10.1007/s00216-015-8869-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 06/03/2015] [Accepted: 06/18/2015] [Indexed: 11/27/2022]
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15
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Wang WF, Zhang HG, Qi SD, Chen HL, Chen XG. Determination of enantiomers by FESI-sweeping with an acid-labile sweeper in nonaqueous capillary electrophoresis. Analyst 2015; 140:4253-9. [DOI: 10.1039/c5an00283d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An acid-labile sweeper based on-line NACE concentration method was developed for analyzing trace enantiomers.
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Affiliation(s)
- Wei-feng Wang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Department of Chemistry
| | - Hui-ge Zhang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Department of Chemistry
| | - Sheng-da Qi
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Department of Chemistry
| | - Hong-li Chen
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Department of Chemistry
| | - Xing-guo Chen
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Department of Chemistry
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16
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Analysis of Melamine in Milk Powder and Liquid Milk by Capillary Zone Electrophoresis After Electrokinetic Supercharging. FOOD ANAL METHOD 2014. [DOI: 10.1007/s12161-014-9987-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Lu Y, Wang D, Kong C, Zhong H, Breadmore MC. Analysis of aromatic acids by nonaqueous capillary electrophoresis with ionic-liquid electrolytes. Electrophoresis 2014; 35:3310-6. [DOI: 10.1002/elps.201400242] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 07/27/2014] [Accepted: 07/28/2014] [Indexed: 11/05/2022]
Affiliation(s)
- Yuanqi Lu
- Analysis and Testing Centre; Dezhou University, Dezhou, Shandong Province; P. R. China
- Austrialian Centre for Research on Separation Science; School of Chemistry; University of Tasmania; Hobart Tasmania Australia
- Institute of Materia Medica; Shandong Academy of Medical Sciences; Jinan P. R. China
- Key Laboratory of Coordination Chemistry and Functional Materials in Universities of Shandong; Dezhou University; Dezhou P. R. China
| | - Dunqing Wang
- Analysis and Testing Centre; Dezhou University, Dezhou, Shandong Province; P. R. China
| | - Chunyan Kong
- Analysis and Testing Centre; Dezhou University, Dezhou, Shandong Province; P. R. China
| | - Hao Zhong
- Institute of Materia Medica; Shandong Academy of Medical Sciences; Jinan P. R. China
| | - Michael C. Breadmore
- Austrialian Centre for Research on Separation Science; School of Chemistry; University of Tasmania; Hobart Tasmania Australia
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18
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Progress in stacking techniques based on field amplification of capillary electrophoresis. Anal Bioanal Chem 2014; 406:6129-50. [DOI: 10.1007/s00216-014-8062-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 07/21/2014] [Accepted: 07/22/2014] [Indexed: 02/07/2023]
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19
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Kitagawa F, Otsuka K. Recent applications of on-line sample preconcentration techniques in capillary electrophoresis. J Chromatogr A 2014; 1335:43-60. [DOI: 10.1016/j.chroma.2013.10.066] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/18/2013] [Accepted: 10/21/2013] [Indexed: 12/21/2022]
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20
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Breadmore MC, Shallan AI, Rabanes HR, Gstoettenmayr D, Abdul Keyon AS, Gaspar A, Dawod M, Quirino JP. Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2010-2012). Electrophoresis 2013; 34:29-54. [PMID: 23161056 DOI: 10.1002/elps.201200396] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/03/2012] [Accepted: 09/04/2012] [Indexed: 12/21/2022]
Abstract
CE has been alive for over two decades now, yet its sensitivity is still regarded as being inferior to that of more traditional methods of separation such as HPLC. As such, it is unsurprising that overcoming this issue still generates much scientific interest. This review continues to update this series of reviews, first published in Electrophoresis in 2007, with updates published in 2009 and 2011 and covers material published through to June 2012. It includes developments in the field of stacking, covering all methods from field amplified sample stacking and large volume sample stacking, through to isotachophoresis, dynamic pH junction and sweeping. Attention is also given to online or inline extraction methods that have been used for electrophoresis.
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Affiliation(s)
- Michael C Breadmore
- Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia.
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21
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Zhang Z, Zhang F, Liu Y. Recent Advances in Enhancing the Sensitivity and Resolution of Capillary Electrophoresis. J Chromatogr Sci 2013; 51:666-83. [DOI: 10.1093/chromsci/bmt012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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22
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Malá Z, Gebauer P, Boček P. Recent progress in analytical capillary isotachophoresis. Electrophoresis 2012; 34:19-28. [DOI: 10.1002/elps.201200323] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 07/23/2012] [Accepted: 07/23/2012] [Indexed: 12/18/2022]
Affiliation(s)
- Zdena Malá
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno; Czech Republic
| | - Petr Gebauer
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno; Czech Republic
| | - Petr Boček
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno; Czech Republic
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23
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Nour V, Trandafir I, Cosmulescu S. HPLC Determination of Phenolic Acids, Flavonoids and Juglone in Walnut Leaves. J Chromatogr Sci 2012; 51:883-90. [DOI: 10.1093/chromsci/bms180] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Deng GH, Chen S, Wang H, Gao J, Luo X, Huang H. DETERMINATION OF ACTIVE INGREDIENTS OF PHYLLANTHUS URINARIA BY CAPILLARY ELECTROPHORESIS WITH AMPEROMETRIC DETECTION. J LIQ CHROMATOGR R T 2012. [DOI: 10.1080/10826076.2011.631264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Guang-Hui Deng
- a School of Chemistry and Chemical Engineering, Key Laboratory of Chemical and Biological Transforming Process , Guangxi University for Nationalities , Nanning , China
| | - Shengyu Chen
- a School of Chemistry and Chemical Engineering, Key Laboratory of Chemical and Biological Transforming Process , Guangxi University for Nationalities , Nanning , China
| | - Hui Wang
- a School of Chemistry and Chemical Engineering, Key Laboratory of Chemical and Biological Transforming Process , Guangxi University for Nationalities , Nanning , China
| | - Jing Gao
- a School of Chemistry and Chemical Engineering, Key Laboratory of Chemical and Biological Transforming Process , Guangxi University for Nationalities , Nanning , China
| | - Xin Luo
- a School of Chemistry and Chemical Engineering, Key Laboratory of Chemical and Biological Transforming Process , Guangxi University for Nationalities , Nanning , China
| | - Hongchen Huang
- a School of Chemistry and Chemical Engineering, Key Laboratory of Chemical and Biological Transforming Process , Guangxi University for Nationalities , Nanning , China
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25
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Knob R, Maier V, Petr J, Ranc V, Ševčík J. On-line preconcentration of perfluorooctanoic acid and perfluorooctanesulfonic acid by nonaqueous capillary electrophoresis. Electrophoresis 2012; 33:2159-66. [DOI: 10.1002/elps.201100665] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Radim Knob
- Department of Analytical Chemistry; Faculty of Science; Palacky University in Olomouc; Olomouc; Czech Republic
| | - Vítězslav Maier
- Regional Centre of Advanced Technologies and Materials; Department of Analytical Chemistry; Faculty of Science; Palacky University in Olomouc; Olomouc; Czech Republic
| | - Jan Petr
- Regional Centre of Advanced Technologies and Materials; Department of Analytical Chemistry; Faculty of Science; Palacky University in Olomouc; Olomouc; Czech Republic
| | - Václav Ranc
- Department of Analytical Chemistry; Faculty of Science; Palacky University in Olomouc; Olomouc; Czech Republic
| | - Juraj Ševčík
- Department of Analytical Chemistry; Faculty of Science; Palacky University in Olomouc; Olomouc; Czech Republic
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26
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Review of recent developments of on-line sample stacking techniques and their application in capillary electrophoresis. OPEN CHEM 2012. [DOI: 10.2478/s11532-012-0007-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
AbstractCapillary electrophoresis (CE) has become one of the most useful tools in separation science because of its high separation efficiency, low cost, versatility, ease of sample preparation and automation. However, some limitations of CE, such as poor concentration sensitivity due to its lower sample loading and shorter optical path length, limits its further applications in separation science. In order to solve this problem, various on-line sample preconcentration techniques such as transient isotachophoresis preconcentration, field-enhanced sample stacking, micelle to solvent stacking, micelle collapse, dynamic pH junction, sweeping, solid phase extraction, single drop microextraction and liquid phase microextraction have been combined with CE. Recent developments, applications and some variants together with different combinations of these techniques integrating in CE are reviewed here and our discussions will be confined to the past three years (2008–2011).
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27
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Affiliation(s)
- Matthew Geiger
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Amy L. Hogerton
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Michael T. Bowser
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
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28
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Pressure-assisted electrokinetic supercharging for the enhancement of non-steroidal anti-inflammatory drugs. J Chromatogr A 2011; 1218:6750-5. [DOI: 10.1016/j.chroma.2011.07.044] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 06/28/2011] [Accepted: 07/13/2011] [Indexed: 11/23/2022]
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29
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Micelle to solvent stacking of two alkaloids in nonaqueous capillary electrophoresis. J Chromatogr A 2011; 1218:5867-71. [DOI: 10.1016/j.chroma.2011.06.106] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Revised: 06/24/2011] [Accepted: 06/28/2011] [Indexed: 11/21/2022]
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30
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Dawod M, Chung DS. High-sensitivity capillary and microchip electrophoresis using electrokinetic supercharging. J Sep Sci 2011; 34:2790-9. [DOI: 10.1002/jssc.201100384] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Revised: 06/01/2011] [Accepted: 06/01/2011] [Indexed: 12/22/2022]
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31
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Kaewchuay N, Yakushiji Y, Fukushi K, Saito K, Hirokawa T. A novel hybrid mode of sample injection to enhance CZE sensitivity for simultaneous determination of a pyridine-triphenylborane anti-fouling agent and its degradation products. Electrophoresis 2011; 32:1486-91. [DOI: 10.1002/elps.201100144] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 03/03/2011] [Accepted: 03/18/2011] [Indexed: 11/06/2022]
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32
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Zhong H, Yao Q, Breadmore MC, Li Y, Lu Y. Analysis of flavonoids by capillary zone electrophoresis with electrokinetic supercharging. Analyst 2011; 136:4486-91. [DOI: 10.1039/c1an15277g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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