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Bezemer KD, van Duin LV, Martín-Alberca C, Somsen GW, Schoenmakers PJ, Haselberg R, van Asten AC. Rapid forensic chemical classification of confiscated flash banger fireworks using capillary electrophoresis. Forensic Chem 2019. [DOI: 10.1016/j.forc.2019.100187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Seitz W, Schulz W, Winzenbacher R. Advantage of liquid chromatography with high-resolution mass spectrometry for the detection of the small and polar molecules trifluoroacetic acid and sulfamic acid. J Sep Sci 2018; 41:4437-4448. [DOI: 10.1002/jssc.201800723] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 10/08/2018] [Accepted: 10/11/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Wolfram Seitz
- Zweckverband Landeswasserversorgung; Laboratory for Operation Control and Research; Langenau Germany
| | - Wolfgang Schulz
- Zweckverband Landeswasserversorgung; Laboratory for Operation Control and Research; Langenau Germany
| | - Rudi Winzenbacher
- Zweckverband Landeswasserversorgung; Laboratory for Operation Control and Research; Langenau Germany
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3
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Sieradzka E, Witt K, Milnerowicz H. The application of capillary electrophoresis techniques in toxicological analysis. Biomed Chromatogr 2014; 28:1507-13. [PMID: 24828301 DOI: 10.1002/bmc.3234] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/25/2014] [Accepted: 04/04/2014] [Indexed: 12/17/2022]
Abstract
Capillary electrophoresis (CE) comprises a group of techniques used to separate chemical mixtures. Analytical separation is based on different electrophoretic mobilities, thereby allowing qualitative and quantitative evaluations to be made. The application of CE in medical science, especially in toxicological studies, is developing rapidly because of the short time required for analysis and its high sensitivity, selectivity and ability to determine substances of an acidic, alkaline and neutral character. This review focuses on the possibility of applying CE in toxicological analysis. Advances in different CE analyses and detection techniques connected with this method are described.
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Affiliation(s)
- Ewelina Sieradzka
- Department of Biomedical and Environmental Analysis, Faculty of Pharmacy, Wroclaw Medical University, Poland
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4
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Sadiq Khan S, Riaz M. Determination of UV active inorganic anions in potable and high salinity water by ion pair reversed phase liquid chromatography. Talanta 2014; 122:209-13. [DOI: 10.1016/j.talanta.2014.01.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/24/2014] [Accepted: 01/27/2014] [Indexed: 10/25/2022]
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5
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Park ST, Kim J, Choi K, Lee HR, Chung DS. Headspace-single drop microextraction with a commercial capillary electrophoresis instrument. Electrophoresis 2012; 33:2961-8. [DOI: 10.1002/elps.201200317] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 07/17/2012] [Accepted: 07/17/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Sung Tai Park
- Department of Chemistry; Seoul National University; Seoul; Korea
| | - Jihye Kim
- Department of Chemistry; Seoul National University; Seoul; Korea
| | - Kihwan Choi
- Department of Chemistry; Seoul National University; Seoul; Korea
| | - Hye Ryeo Lee
- Department of Chemistry; Seoul National University; Seoul; Korea
| | - Doo Soo Chung
- Department of Chemistry; Seoul National University; Seoul; Korea
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6
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Single-drop microextraction as a powerful pretreatment tool for capillary electrophoresis: A review. Anal Chim Acta 2012; 739:14-24. [DOI: 10.1016/j.aca.2012.06.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 06/02/2012] [Accepted: 06/02/2012] [Indexed: 01/16/2023]
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7
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Feng Q, Wanigasekara E, Breitbach ZS, Armstrong DW. Separation of multiply charged anions by capillary electrophoresis using alkyl phosphonium pairing agents. Electrophoresis 2012; 33:1153-61. [DOI: 10.1002/elps.201100500] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qing Feng
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington; TX; USA
| | - Eranda Wanigasekara
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington; TX; USA
| | - Zachary S. Breitbach
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington; TX; USA
| | - Daniel W. Armstrong
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington; TX; USA
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8
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Sensitive and selective capillary electrophoretic analysis of proteins by zirconia nanoparticle-enhanced copper (II)-catalyzed luminol-hydrogen peroxide chemiluminescence. Talanta 2012; 97:193-8. [PMID: 22841066 DOI: 10.1016/j.talanta.2012.04.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 03/29/2012] [Accepted: 04/04/2012] [Indexed: 11/20/2022]
Abstract
We report herein a sensitive, selective, convenient CE determination of heme proteins in complex matrices by a sodium-dodecyl-sulfate-assisted, zirconia nanoparticle-enhanced copper (II)-catalyzed luminol-hydrogen peroxide chemiluminescence (CCLHPCL). Introducing a segment of sodium dodecyl sulfate to the capillary after sample injection not only rendered selective detection by quenching the luminescence signals from the non-heme proteins but also owning to the suppressed protein adsorption, led to significant improvement in separation efficiency and detection sensitivity. The signals were further improved by addition of ZrO(2) nanoparticles to the chemiluminescence solution. Compared with the conventional CCLHPCL, the detection limits (S/N=3) were improved by 10.2-22.0 folds, with 7.8×10(-9), 3.3×10(-9) and 1.5×10(-9) M for three model proteins, viz, myoglobin, hemoglobin and cytochrome C, respectively. Because the method did not require sophisticated pretreatment, it was convenient to analyze heme proteins in complex matrices, as demonstrated, hemoglobin in human blood and spiked human urine samples.
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9
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Sursyakova VV, Kalyakin SN, Burmakina GV, Rubaylo AI. System peaks in capillary zone electrophoresis of anions with negative voltage polarity and counter-electroosmotic flow. Electrophoresis 2010; 32:210-7. [DOI: 10.1002/elps.201000313] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 09/23/2010] [Accepted: 10/15/2010] [Indexed: 11/08/2022]
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10
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Zhang W, Wu Y, Chen Y, Jiang H, Chen Z. Simultaneous Separation of Four Metal Ions by CE Using Bis(2-Pyridylmethyl) (8-Pyridylmethyloxy-Quinoline-2-Methyl)Amine as Chelating Agent. Chromatographia 2010. [DOI: 10.1365/s10337-010-1775-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Petr J, Jiang C, Sevcik J, Tesarova E, Armstrong DW. Sterility testing by CE: a comparison of online preconcentration approaches in capillaries with greater internal diameters. Electrophoresis 2010; 30:3870-6. [PMID: 19847804 DOI: 10.1002/elps.200900299] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Detection of microbial contamination is of critical importance in the medical and the food industry. Rapid tests for the absence or presence of viable microorganisms are in urgent demand. CE is a modern analytical technique that can be adapted for rapid screening of microbial contamination. However, the small dimensions of capillaries allow the introduction of only a small fraction of the sample, which can be problematic when examining large samples. In this article, we examine the possibilities of introducing larger sample volumes using capillaries with greater id together with different stacking techniques. The use of 0.32 mm id capillary and the injection of 60% of the capillary volume led to approximately 120-fold improvement of the injected sample volume over the classical injection 5% of a 0.10-mm id capillary. The setup we described opens new possibilities in sterility testing using CE.
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Affiliation(s)
- Jan Petr
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX 76019-0065, USA
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12
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KrÌÃzÌek T, Breitbach ZS, Armstrong DW, TesarÌová E, Coufal P. Separation of inorganic and small organic anions by CE using phosphonium-based mono- and dicationic reagents. Electrophoresis 2009; 30:3955-63. [DOI: 10.1002/elps.200900416] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Fercher G, Smetana W, Vellekoop MJ. Microchip electrophoresis in low-temperature co-fired ceramics technology with contactless conductivity measurement. Electrophoresis 2009; 30:2516-22. [DOI: 10.1002/elps.200800654] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Hutchinson JP, Johns C, Breadmore MC, Hilder EF, Guijt RM, Lennard C, Dicinoski G, Haddad PR. Identification of inorganic ions in post-blast explosive residues using portable CE instrumentation and capacitively coupled contactless conductivity detection. Electrophoresis 2008; 29:4593-602. [DOI: 10.1002/elps.200800226] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Kostal V, Arriaga EA. Recent advances in the analysis of biological particles by capillary electrophoresis. Electrophoresis 2008; 29:2578-86. [PMID: 18576409 PMCID: PMC3037010 DOI: 10.1002/elps.200700917] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This review covers research papers published in the years 2005-2007 that describe the application of capillary electrophoresis to the analysis of biological particles such as whole cells, subcellular organelles, viruses and microorganisms.
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Affiliation(s)
- Vratislav Kostal
- Department of Chemistry, University of Minnesota, Minneapolis, MN, USA
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16
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5 Role of CE in drug substance and drug product development. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s0149-6395(07)00005-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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17
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Coufal P, Pacáková V, Stulík K. An evaluation of the experimental approaches to detection of small ions in CE. Electrophoresis 2007; 28:3379-89. [PMID: 17806126 DOI: 10.1002/elps.200700154] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This review points out some important trends in the development of the detection techniques for small ions in CE. On the basis of selected literature references it briefly discusses some general requirements on detection techniques in CE. Various optical measurements, mass spectrometric approaches and electrochemical detection techniques are dealt with. Some specific features of microchip CE separation and detection are pointed out and possibilities of dual detection are mentioned. The principal parameters of the above detection techniques are then briefly compared.
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Affiliation(s)
- Pavel Coufal
- Department of Analytical Chemistry, Faculty of Science, Charles University in Prague, Albertov 2830, CZ-128 40 Prague 2, Czech Republic
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18
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Timerbaev AR. Recent trends in CE of inorganic ions: From individual to multiple elemental species analysis. Electrophoresis 2007; 28:3420-35. [PMID: 17768723 DOI: 10.1002/elps.200600491] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The major methodological developments in CE related to inorganic analysis are overviewed. This is an update to a previous review article by the author (Timerbaev, A. R., Electrophoresis 2004, 25, 4008-4031) and it covers the review work and innovative research papers published between January 2004 and the first part of 2006. As was underlined in that review, a growing interest of analytical community in providing elemental speciation information found a sound response of the CE method developers. Presently, almost every second research paper in the field of interest deals with element species analysis, the use of inductively coupled plasma MS detection and biochemical applications being the topics of utmost research efforts. On the other hand, advances in general methodology traditionally centered on a CE system modernization for improvements in sensitivity and separation selectivity have attracted less attention over the review period. While there is no indication that inorganic ion applications would surpass by the developmental rate the more matured analysis of organic analytes, CE can now be seen as an analytical technique to be before long customary in a number of inorganic analysis arenas.
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Affiliation(s)
- Andrei R Timerbaev
- Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow, Russia.
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19
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Lin CY, Yu CJ, Chen YM, Chang HC, Tseng WL. Simultaneous separation of anionic and cationic proteins by capillary electrophoresis using high concentration of poly(diallyldimethylammonium chloride) as an additive. J Chromatogr A 2007; 1165:219-25. [PMID: 17716677 DOI: 10.1016/j.chroma.2007.07.075] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2007] [Revised: 07/24/2007] [Accepted: 07/31/2007] [Indexed: 11/16/2022]
Abstract
The simultaneous separation of anionic and cationic proteins has been achieved by addition of high concentration of poly(diallyldimethylammonium chloride) (PDDAC) in capillary electrophoresis. A capillary was filled with PDDAC so that it would act as ion-pair reagents in the separation of anionic proteins. On the other hand, the PDDAC can also be used as coating additives for the analysis of cationic proteins. Increasing the concentration of PDDAC in the separation buffer had the ability to improve the separation efficiency, change the electrophoretic mobility, and alter the separation selectivity; however, this was not true in the case of analyzing proteins by using the PDDAC larger than 1.6%. By both using a buffer containing 1.6% PDDAC and applying pH-stepwise techniques, 13 proteins with a wide range of pI (4.7-11.1) and molecular masses (6.5-198.0 kDa) could be separated within 30 min in a single run. In addition to this separation, we observed not only more peaks from alpha-chymotrypsinogen A and aprotinin but also the bovine serum albumin (BSA) dimer and trimer. With the 50 nL protein injection sample, the limits of detections at signal-to-noise of 3 for proteins are in the range of 0.07-0.79 microM. Except for BSA, the relative standard derivation values of migration time and peak height for all proteins were <1.3 and <6.9%, respectively. We suggested that this proposed method is a promising approach for clinical diagnosis and proteomics applications.
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Affiliation(s)
- Chin-Yu Lin
- Department of Chemistry, National Sun Yat-sen University, Taiwan
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20
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Determination of 3-Nitrotyrosine by Micellar Electrokinetic Chromatography with on-Column High-Salt Stacking. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2007. [DOI: 10.1016/s1872-2040(07)60069-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Chen Z, Megharaj M, Naidu R. Confirmation of iron complex formation using electrospray ionization mass spectrometry (ESI-MS) and sample stacking for analysis of iron polycarboxylate speciation by capillary electrophoresis. Microchem J 2007. [DOI: 10.1016/j.microc.2006.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Weekley BS, Foley JP. Dual-opposite-injection CZE: Theoretical aspects and application to organic and pharmaceutical compounds. Electrophoresis 2007; 28:697-711. [PMID: 17253631 DOI: 10.1002/elps.200600608] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Several important figures of merit (migration time, efficiency, resolution, resolution per unit time, and electrophoretic selectivity) are quantitatively compared for the first time for conventional CZE and dual-opposite-injection CZE (DOI-CZE). Aspects of DOI-CZE relevant to the separation of organic and pharmaceutical ions (MW>120 Da) are also discussed. Two new approaches to resolve the codetection of anions and cations, hydrodynamic flow-modified DOI-CZE and polarity reversal in combination with asymmetric detector window positioning, are compared with the method of preliminary transport, a variable procedure within sequential sample introduction, using a six-component sample of organic and pharmaceutical compounds. The advantages of DOI-CZE for the simultaneous analysis of organic/pharmaceutical anions and cations are illustrated in a direct comparison of conventional CZE and DOI-CZE for the separation of a ten-component mixture of pharmaceutical ions (five ionized acids and five ionized bases).
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Affiliation(s)
- Brian S Weekley
- Analytical R&D, Pfizer Global Research and Development, Ann Arbor, MI, USA
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Milnera M, Štěpánek M, Zusková I, Procházka K. Experimental Study of the Electrophoretic Mobility and Effective Electric Charge of Polystyrene-Block-Poly(Methacrylic Acid) Micelles in Aqueous Media. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2007. [DOI: 10.1080/10236660601095157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Förster S, Matysik FM, Ghanem MA, Marken F. Capillary electrophoresis with microwave-enhanced electrochemical detection. Analyst 2006; 131:1210-2. [PMID: 17066188 DOI: 10.1039/b608974g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new experimental development concerning microwave-assisted electrochemical detection in conjunction with capillary electrophoresis is presented. Focused microwaves are readily incorporated into end-column detection systems for capillary electrophoresis, they induce strong localised thermal activation at microelectrodes, and they affect and modulate, in particular, signals for chemically irreversible redox processes.
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Affiliation(s)
- Sascha Förster
- Institute of Analytical Chemistry, University of Leipzig, Germany
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