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Miyabe K, Inaba S, Umeda M. A study on attempt for determination of permeation kinetics of coumarin at lipid bilayer of liposomes by using capillary electrophoresis with moment analysis theory. J Chromatogr A 2023; 1687:463691. [PMID: 36542884 DOI: 10.1016/j.chroma.2022.463691] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/14/2022] [Accepted: 11/28/2022] [Indexed: 11/30/2022]
Abstract
It was tried to develop a moment analysis method for the determination of lipid membrane permeability. The first absolute and second central moments of elution peaks measured by liposome electrokinetic chromatography (LEKC) are analyzed by using moment equations. As a concrete example, elution peak profiles of coumarin in a LEKC system, in which liposomes consisting of 1-palmitoyl-2-oleoyl-sn‑glycero-3-phosphocholine (POPC) and phosphatidylserine (PS) are used as a pseudo-stationary phase, were analyzed. It seems that lipid membrane permeability of coumarin across the lipid bilayer of POPC/PS liposomes was measured by the moment analysis method because previous permeability measurements using parallel artificial membrane permeability assay (PAMPA) and Caco-2 cells indicated that coumarin is permeable across lipid bilayer. However, it was also pointed out that the moment analysis method with LEKC is not effective for the determination of lipid membrane permeability and that it provides information about adsorption/desorption kinetics at lipid bilayer of liposomes. Therefore, different moment equations were also developed for the determination of adsorption/desorption rate constants of coumarin from the LEKC data. It was demonstrated that permeation rate constants at lipid bilayer or adsorption/desorption rate constants can be determined from the LEKC data on the basis of moment analysis theory for the mass transfer phenomena of coumarin at the lipid bilayer of POPC/PS liposomes. Mass transfer kinetics of solutes at lipid bilayer should be determined under the conditions that liposomes originally be because they are self-assembling and dynamic systems formed through weak interactions between phospholipid monomers. The moment analysis method using LEKC is effective for the experimental determination of the mass transfer rate constants at the lipid bilayer of liposomes because neither immobilization nor chemical modification of liposomes is necessary when LEKC data are measured. It is expected that the results of this study contribute to the dissemination of an opportunity for the determination of permeation rate constants or adsorption/desorption rate constants at the lipid bilayer of liposomes to many researchers because capillary electrophoresis is widespread.
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Affiliation(s)
- Kanji Miyabe
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshimaku, Tokyo 171-8501, Japan.
| | - Shunta Inaba
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshimaku, Tokyo 171-8501, Japan
| | - Momoko Umeda
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshimaku, Tokyo 171-8501, Japan
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2
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Miyabe K, Nakajima M. Kinetic study on solute permeation at the interface of molecular aggregates by partial filling capillary electrophoresis. Electrophoresis 2021; 42:2528-2537. [PMID: 34558679 DOI: 10.1002/elps.202100252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/09/2021] [Accepted: 09/14/2021] [Indexed: 01/06/2023]
Abstract
Moment analysis method using partial filling CE was developed for the kinetic study on solute permeation at the interface of spherical molecular aggregates. Moment equations for partial filling CE were developed by classifying CE systems into five categories according to the migration velocities of solute and molecular aggregate. The method was applied to the study on the dissolution of electrically neutral solutes into SDS micelles. Elution peaks were measured by partial filling CE while changing the concentration of SDS and the filling ratio of SDS micellar zone to the capillary (ϕM ). Partition equilibrium constants (Kp ) and rate constants of interfacial solute permeation of SDS micelles (kin and kout ) were determined from the first absolute and second central moments of the elution peaks by using the moment equations. Their values were comparable irrespective of ϕM and were almost the same as those previously measured by complete filling CE. The positive correlation of Kp with the hydrophobicity of the solutes was explained in terms of the change in kin and kout . It was demonstrated that the moment analysis method using partial filling CE is effective for studying solute permeation kinetics at the interface of spherical molecular aggregates.
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Affiliation(s)
- Kanji Miyabe
- Department of Chemistry, Faculty of Science, Rikkyo University, Tokyo, Japan
| | - Mari Nakajima
- Department of Chemistry, Faculty of Science, Rikkyo University, Tokyo, Japan
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Čokrtová K, Křížek T, Kubíčková A, Coufal P. Effect of background electrolyte anions on markers of electroosmotic flow in capillary electrophoresis. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02810-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Martínková E, Křížek T, Kubíčková A, Coufal P. Mobilization of electroosmotic flow markers in capillary zone electrophoresis. Electrophoresis 2021; 42:932-938. [PMID: 33570209 DOI: 10.1002/elps.202000301] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 02/05/2021] [Accepted: 02/05/2021] [Indexed: 11/11/2022]
Abstract
UV-absorbing neutral substances are commonly used as markers of mean electroosmotic flow in capillary electrophoresis for their zero electrophoretic mobility in an electric field. However, some of these markers can interact with background electrolyte components and migrate at a different velocity than the electroosmotic flow. Thus, we tested 11 markers primarily varying in their degree of methylation and type of central atom in combination with five background electrolyte cations differing in their ionic radii and surface charge density, measuring the relative electrophoretic mobility using thiourea as a reference marker. Our results from this set of experiments showed some general trends in the mobilization of the markers based on the effects of marker structure and type of background electrolyte cation on the relative electrophoretic mobility. As an example, the effects of an inadequate choice of marker on analyte identification were illustrated in the electrophoretic separation of glucosinolates. Therefore, our findings may help electrophoretists appropriately select electroosmotic flow markers for various electrophoretic systems.
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Affiliation(s)
- Eva Martínková
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Tomáš Křížek
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Anna Kubíčková
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Pavel Coufal
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
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Mező E, Páger C, Makszin L, Kilár F. Capillary zone electrophoresis of proteins applying ionic liquids for dynamic coating and as background electrolyte component. Electrophoresis 2020; 41:2083-2091. [PMID: 33022798 DOI: 10.1002/elps.202000204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 11/07/2022]
Abstract
The use of ionic liquids in capillary electrophoresis, either as coating material or as components of the background electrolyte needs systematic standardization to set up optimal conditions. Excellent separation of the proteins was achieved using 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4 ]) or 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4 ]) ionic liquids using the properly made ionic-liquid-water binary mixtures for the experiments. The binary mixture has a distinctly stable and well perceptible low pH, which depends on the concentration of the ionic liquid, and on the preparation time of the mixture. Optimal conditions for the electrophoretic separation were obtained upon a multivariate analysis of the experimental parameters (applied voltage, migration time, concentration, and type of the ionic liquid). The standardized condition provides a low electroendosmotic flow toward the anode, which, however, did not hinder the proteins to migrate toward the cathode. The migration of cytochrome c, lysozyme, myoglobin, trypsin, and apo-transferrin at a pH around 2, far below the isoelectric points of the proteins, showed RSD values of the migration times less than 7.5% and less than 6.5% when using [emim][BF4 ] or [bmim][BF4 ], respectively, either in run-to-run or day-to-day experiments. The determination of the extent of the EOF is not possible with the commonly used EOF markers, due to interaction with the ionic-liquid constituents. The interaction of the ionic liquids with the proteins influences the migration order in zone electrophoresis. This method has been applied successfully for the analyses of real biological samples such as proteins from egg whites and human tears.
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Affiliation(s)
- Emerencia Mező
- Institute of Bioanalysis, Medical School, and Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Csilla Páger
- Institute of Bioanalysis, Medical School, and Szentágothai Research Center, University of Pécs, Pécs, Hungary
- Department of Analytical and Environmental Chemistry, Faculty of Sciences, University of Pécs, Pécs, Hungary
| | - Lilla Makszin
- Institute of Bioanalysis, Medical School, and Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Ferenc Kilár
- Institute of Bioanalysis, Medical School, and Szentágothai Research Center, University of Pécs, Pécs, Hungary
- Department of Bioengineering, Sapientia Hungarian University of Transylvania, Miercurea Ciuc, Romania
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Miyabe K, Senoo S, Okayasu N. Moment theory for the analytical determination of rate constants for solute permeation at the interface of spherical molecular aggregates. Electrophoresis 2019; 40:2962-2970. [PMID: 31512268 DOI: 10.1002/elps.201900182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 09/02/2019] [Accepted: 09/05/2019] [Indexed: 11/05/2022]
Abstract
Moment equations were developed on the basis of the Einstein equation for diffusion and the random walk model to analytically determine the rate constant for the interfacial solute permeation from a bulk solvent into molecular aggregates (kin ) and the inverse rate constant from the molecular aggregates to the bulk solvent (kout ). The moment equations were in good agreement with those derived in a different manner. To demonstrate their effectiveness in one concrete example, the moment equations were used to analytically determine the values of kin and kout of three electrically neutral solutes, i.e. resorcinol, phenol, and nitrobenzene, from the first absolute (μ1A ) and second central (μ2C ) moments of their elution peaks, as measured by electrokinetic chromatography (EKC), in which the sodium dodecyl sulfate (SDS) micelles were used as a pseudostationary phase. The values of kin and kout should be determined with no chemical modifications and no physical action with the molecular aggregates because they are dynamic systems formed through weak interactions between the components. The moment analysis of the elution peak profiles measured by EKC is effective to unambiguously determine kin , kout , and the partition equilibrium constant (kin /kout ) under appropriate experimental conditions.
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Affiliation(s)
- Kanji Miyabe
- Department of Chemistry, Faculty of Science, Rikkyo University, Tokyo, Japan
| | - Shiori Senoo
- Department of Chemistry, Faculty of Science, Rikkyo University, Tokyo, Japan
| | - Nanami Okayasu
- Department of Chemistry, Faculty of Science, Rikkyo University, Tokyo, Japan
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Zhang W, He M, Yuan T, Xu W. A two-step method for rapid characterization of electroosmotic flows in capillary electrophoresis. Electrophoresis 2017; 38:3130-3135. [DOI: 10.1002/elps.201700215] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/25/2017] [Accepted: 08/25/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Wenjing Zhang
- School of Life Science; Beijing Institute of Technology; Beijing P. R. China
| | - Muyi He
- School of Life Science; Beijing Institute of Technology; Beijing P. R. China
| | - Tao Yuan
- College of Information Science; Shenzhen University; Shenzhen P. R. China
| | - Wei Xu
- School of Life Science; Beijing Institute of Technology; Beijing P. R. China
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Miyabe K, Suzuki N, Shimazaki Y. Determination of Association and Dissociation Rate Constants in an Inclusion Complex System between Thymol and Sulfated-β-cyclodextrin by Moment Analysis - Affinity Capillary Electrophoresis. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160193] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Miyabe K, Suzuki N. Kinetic Study of Solute Permeation across Surfactant Micelle/Bulk Solvent Interface by Moment Analysis - Chromatographic Capillary Electrophoresis (MA-CCE). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160185] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Danel C, Melnyk P, Azaroual N, Larchanché PE, Goossens JF, Vaccher C. Evaluation of three neutral capillary coatings for the determination of analyte-cyclodextrin binding constants by affinity capillary electrophoresis. Application to N,N'-disubstituted piperazine derivatives. J Chromatogr A 2016; 1455:163-171. [PMID: 27286645 DOI: 10.1016/j.chroma.2016.05.090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/23/2016] [Accepted: 05/26/2016] [Indexed: 01/08/2023]
Abstract
The performances of three neutral static coatings (hydroxypropyl cellulose, polyethylene oxide and poly(N,N-dimethylacrylamide) have been evaluated in order to determine the binding constants of the complexes formed between four polycationic compounds (piperazine derivatives) and four cyclodextrins of pharmaceutical interest (β-CD, HP-β-CD, Me-β-CD and sulfobutyl ether-β-CD) by affinity capillary electrophoresis. The physically-adsorbed poly(N,N-dimethylacrylamide) coating proves to be the more efficient to mask the silanol groups of the capillary wall since the lowest electroosmotic flow was measured for this coating. Moreover, it drastically reduces the adsorption of the compounds since it allows a correct repeatability of their migration time, higher efficiencies of the peaks and no baseline shift. Then, it was verified for four complexes that this coating allows a correct determination of the binding constants avoiding the CD adsorption which is responsible of an undervaluation of binding constants. The highest binding constants are obtained using the anionic sulfobutyl ether-β-CD (SBE-β-CD). The structure of the complex formed between the tacrine derivative and the SBE-β-CD was further investigated through 2D ROESY NMR experiments and structure-binding constant relationships. Results suggest that the inclusion in the SBE-β-CD cavity occurs through the aliphatic ring portion of the tacrine moiety.
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Affiliation(s)
- Cécile Danel
- Univ. Lille, CHU Lille, EA 7365 GRITA Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000 Lille, France.
| | - Patricia Melnyk
- Univ. Lille, Inserm, CHU Lille, UMR-S 1172 JPArc Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000 Lille, France.
| | - Nathalie Azaroual
- Univ. Lille, CHU Lille, EA 7365 GRITA Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000 Lille, France.
| | - Paul-Emmanuel Larchanché
- Univ. Lille, Inserm, CHU Lille, UMR-S 1172 JPArc Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000 Lille, France.
| | - Jean-François Goossens
- Univ. Lille, CHU Lille, EA 7365 GRITA Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000 Lille, France.
| | - Claude Vaccher
- Univ. Lille, CHU Lille, EA 7365 GRITA Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000 Lille, France.
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Miyabe K, Shimazaki Y. Moment Analysis of Affinity Kinetics in Inclusion Complex System between Thymol and Sulfated-β-cyclodextrin by Chromatographic Capillary Electrophoresis (CCE). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150203] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Kanji Miyabe
- Department of Chemistry, Faculty of Science, Rikkyo University
| | - Youki Shimazaki
- Department of Chemistry, Faculty of Science, Rikkyo University
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12
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Kubáň P, Hauser PC. Contactless conductivity detection for analytical techniques-Developments from 2012 to 2014. Electrophoresis 2014; 36:195-211. [DOI: 10.1002/elps.201400336] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/05/2014] [Accepted: 08/05/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Pavel Kubáň
- Institute of Analytical Chemistry of the Academy of Sciences of the Czech Republic; Brno Czech Republic
| | - Peter C. Hauser
- Department of Chemistry; University of Basel; Basel Switzerland
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Escuder-Gilabert L, Martín-Biosca Y, Medina-Hernández MJ, Sagrado S. Cyclodextrins in capillary electrophoresis: recent developments and new trends. J Chromatogr A 2014; 1357:2-23. [PMID: 24947884 DOI: 10.1016/j.chroma.2014.05.074] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 05/27/2014] [Accepted: 05/28/2014] [Indexed: 02/07/2023]
Abstract
Despite the fact that extensive research in the field of separations by capillary electrophoresis (CE) has been carried out and many reviews have been published in the last years, a specific review on the use and future potential of cyclodextrins (CDs) in CE is not available. This review focuses the attention in the CD-CE topic over the January 2013-February 2014 period (not covered by previous more general CE-reviews). Recent contributions (reviews and research articles) including practical uses (e.g. solute-CD binding constant estimation and further potentials; 19% of publications), developments and applications (mainly chiral and achiral analysis; 38 and 24% of publications, respectively) are summarized in nine comprehensive tables and are commented. Statistics and predictions related to the CD-CE publications are highlighted in order to infer the current and expected research interests. Finally, trends and initiatives on CD-CE attending to real needs or practical criteria are outlined.
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Affiliation(s)
- L Escuder-Gilabert
- Departamento de Química Analítica, Universidad de Valencia, Burjassot, Valencia, Spain
| | - Y Martín-Biosca
- Departamento de Química Analítica, Universidad de Valencia, Burjassot, Valencia, Spain
| | - M J Medina-Hernández
- Departamento de Química Analítica, Universidad de Valencia, Burjassot, Valencia, Spain
| | - S Sagrado
- Departamento de Química Analítica, Universidad de Valencia, Burjassot, Valencia, Spain; Centro Interuniversitario de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia-Universidad de Valencia, Valencia, Spain.
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Křížek T, Kubíčková A, Hladílková J, Coufal P, Heyda J, Jungwirth P. Electrophoretic mobilities of neutral analytes and electroosmotic flow markers in aqueous solutions of Hofmeister salts. Electrophoresis 2014; 35:617-24. [PMID: 24338984 DOI: 10.1002/elps.201300544] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 11/29/2013] [Accepted: 11/29/2013] [Indexed: 11/07/2022]
Abstract
Small neutral organic compounds have traditionally the role of EOF markers in electrophoresis, as they are expected to have zero electrophoretic mobility in external electric fields. The BGE contains, however, ions that have unequal affinities to the neutral molecules, which in turn results in their mobilization. In this study we focused on two EOF markers-thiourea and DMSO, as well as on N-methyl acetamide (NMA) as a model of the peptide bond. By means of CE and all atom molecular dynamics simulations we explored mobilization of these neutral compounds in large set of Hofmeister salts. Employing a statistical mechanics approach, we were able to reproduce by simulations the experimental electrophoretic mobility coefficients. We also established the role of the chemical composition of marker and the BGE on the measured electrophoretic mobility coefficient. For NMA, we interpreted the results in terms of the relative affinities of cations versus anions to the peptide bond.
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Affiliation(s)
- Tomáš Křížek
- Department of Analytical Chemistry, Faculty of Science, Charles University in Prague, Prague, Czech Republic
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Hellqvist A, Hedeland Y, Pettersson C. Evaluation of electroosmotic markers in aqueous and nonaqueous capillary electrophoresis. Electrophoresis 2013; 34:3252-9. [DOI: 10.1002/elps.201300305] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 08/13/2013] [Accepted: 09/02/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Alexander Hellqvist
- Division of Analytical Pharmaceutical Chemistry, Department of Medicinal Chemistry, Biomedical Centre; Uppsala University; Uppsala Sweden
| | - Ylva Hedeland
- Division of Analytical Pharmaceutical Chemistry, Department of Medicinal Chemistry, Biomedical Centre; Uppsala University; Uppsala Sweden
| | - Curt Pettersson
- Division of Analytical Pharmaceutical Chemistry, Department of Medicinal Chemistry, Biomedical Centre; Uppsala University; Uppsala Sweden
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