1
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Lobato A, Fernandes VC, Pacheco JG, Delerue-Matos C, Gonçalves LM. Organochlorine pesticide analysis in milk by gas-diffusion microextraction with gas chromatography-electron capture detection and confirmation by mass spectrometry. J Chromatogr A 2020; 1636:461797. [PMID: 33348272 DOI: 10.1016/j.chroma.2020.461797] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/09/2020] [Accepted: 12/08/2020] [Indexed: 12/11/2022]
Abstract
Organochlorine pesticides (OCPs) are synthetic compounds less used nowadays due to their toxicity combined with slow degradation which leads to accumulation in the environment. Gas-diffusion microextraction (GDME) was employed prior to gas chromatography with electron capture detection (GC-ECD) and mass spectrometry (GC-MS). For the first time, the low-cost, eco-friendly GDME system was used to extract the OCPs directly from milk samples and associated with GC-ECD. Parameters that affect GDME's performance (extract volume, extraction time, and temperature) were optimized. The calibration curves of all OCPs (α- and β-hexachlorocyclohexane, lindane, hexachlorobenzene, p,p'-DDE, aldrin, dieldrin, and α-endosulfan) had coefficients of determination (r2) ranging from 0.991 to 0.995, and limits of detection (LODs) values ranging from 3.7 to 4.8 µg L-1. This method also provided satisfactory values for precision with relative standard deviations (RSDs) lower than 10% and recoveries above 90%. As a proof-of-concept, several commercial milk samples were analyzed, aldrin was found in one of them but below the maximum residue limits.
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Affiliation(s)
- Alnilan Lobato
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo - SP, Brazil
| | - Virgínia Cruz Fernandes
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto (ISEP), Instituto Politécnico do Porto, Porto, Portugal.
| | - João G Pacheco
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto (ISEP), Instituto Politécnico do Porto, Porto, Portugal
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto (ISEP), Instituto Politécnico do Porto, Porto, Portugal
| | - Luís Moreira Gonçalves
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo - SP, Brazil.
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2
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Donegatti TA, Lobato A, Duek EAR, Moreira Gonçalves L, Alves Pereira E. Derivatization-free determination of aminoglycosides by CZE-UV in pharmaceutical formulations. Electrophoresis 2020; 41:1576-1583. [PMID: 32683725 DOI: 10.1002/elps.202000160] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 12/11/2022]
Abstract
Aminoglycosides are a relevant class of antibiotics widely used by medics and veterinaries. There are a variety of reasons that make their determination relevant, such as quality control, environment and food contamination assessment, drug-release studies, among others. The lack of a chromophore makes aminoglycoside spectrophotometric detection particularly challenging, often requiring derivatization. In this work, an indirect detection method, making use of imidazole as a probe, applying CZE was successfully tested. It did not require derivatization, which simplified the sample preparation. Suitable figures of merit were obtained; recoveries between 95 and 105%, adequate repeatability and precision, correlation coefficients (r) above 0.998, and limits of detection (LODs) of 3.2 and 11 mg/L for gentamicin and paromomycin, respectively. As a proof-of-concept, it was also applied in a simple controlled release experiment that was well fitted using the Hill equation.
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Affiliation(s)
- Tiago Augusto Donegatti
- Departamento de Física, Química e Matemática, Universidade Federal de São Carlos - UFSCar, Sorocaba, São Paulo, Brazil
| | - Alnilan Lobato
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo, São Paulo, Brazil
| | - Eliana A R Duek
- Biomaterials Laboratory, Medical and Health Sciences Faculty, Pontifical University Catholic of São Paulo (PUC-SP), Sorocaba, São Paulo, Brazil
| | - Luís Moreira Gonçalves
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo, São Paulo, Brazil
| | - Elisabete Alves Pereira
- Departamento de Física, Química e Matemática, Universidade Federal de São Carlos - UFSCar, Sorocaba, São Paulo, Brazil
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3
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Fast Determination of Main Bioamines and Precursor Amino Acids in Beer by Miniaturized Electrophoresis Using Gold Nanoparticle Composite Electrode. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1395-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4
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Teasdale A, Elder DP. Analytical control strategies for mutagenic impurities: Current challenges and future opportunities? Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.10.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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5
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Kašička V. Recent developments in capillary and microchip electroseparations of peptides (2015-mid 2017). Electrophoresis 2017; 39:209-234. [PMID: 28836681 DOI: 10.1002/elps.201700295] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 08/15/2017] [Accepted: 08/16/2017] [Indexed: 12/17/2022]
Abstract
The review brings a comprehensive overview of recent developments and applications of high performance capillary and microchip electroseparation methods (zone electrophoresis, isotachophoresis, isoelectric focusing, affinity electrophoresis, electrokinetic chromatography, and electrochromatography) to analysis, microscale isolation, purification, and physicochemical and biochemical characterization of peptides in the years 2015, 2016, and ca. up to the middle of 2017. Advances in the investigation of electromigration properties of peptides and in the methodology of their analysis (sample preseparation, preconcentration and derivatization, adsorption suppression and EOF control, and detection) are described. New developments in particular CE and CEC methods are presented and several types of their applications to peptide analysis are reported: qualitative and quantitative analysis, determination in complex (bio)matrices, monitoring of chemical and enzymatical reactions and physical changes, amino acid, sequence and chiral analysis, and peptide mapping of proteins. Some micropreparative peptide separations are shown and capabilities of CE and CEC methods to provide important physicochemical characteristics of peptides are demonstrated.
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Affiliation(s)
- Václav Kašička
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
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6
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Wuethrich A, Quirino JP. Derivatisation for separation and detection in capillary electrophoresis (2015-2017). Electrophoresis 2017; 39:82-96. [PMID: 28758685 DOI: 10.1002/elps.201700252] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 02/01/2023]
Abstract
Derivatisation is an integrated part of many analytical workflows to enable separation and detection of the analytes. In CE, derivatisation is adapted in the four modes of pre-capillary, in-line, in-capillary, and post-capillary derivatisation. In this review, we discuss the progress in derivatisation from February 2015 to May 2017 from multiple points of view including sections about the derivatisation modes, derivatisation to improve the analyte separation and analyte detection. The advancements in derivatisation procedures, novel reagents, and applications are covered. A table summarising the 46 reviewed articles with information about analyte, sample, derivatisation route, CE method and method sensitivity is provided.
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Affiliation(s)
- Alain Wuethrich
- Centre for Personalised Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, Brisbane, QLD, Australia
| | - Joselito P Quirino
- Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences-Chemistry, University of Tasmania, Hobart, TAS, Australia
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7
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Sierra T, Crevillen AG, Escarpa A. Derivatization agents for electrochemical detection in amino acid, peptide and protein separations: The hidden electrochemistry? Electrophoresis 2017; 38:2695-2703. [DOI: 10.1002/elps.201700167] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/17/2017] [Accepted: 07/17/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Tania Sierra
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcala; Alcala de Henares Madrid Spain
| | - Agustin G. Crevillen
- Department of Analytical Sciences, Faculty of Sciences; Universidad Nacional de Educación a Distancia (UNED); Madrid Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcala; Alcala de Henares Madrid Spain
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8
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Santos MSF, da Costa ET, Gutz IGR, Garcia CD. Analysis of Methanol in the Presence of Ethanol, Using a Hybrid Capillary Electrophoresis Device with Electrochemical Derivatization and Conductivity Detection. Anal Chem 2017; 89:1362-1368. [DOI: 10.1021/acs.analchem.6b04440] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Mauro Sérgio Ferreira Santos
- Departamento
de Química Fundamental, Instituto de Química, University of São Paulo, São Paulo, Brazil
- Department
of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Eric Tavares da Costa
- Department
of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Ivano Gebhardt Rolf Gutz
- Departamento
de Química Fundamental, Instituto de Química, University of São Paulo, São Paulo, Brazil
| | - Carlos D. Garcia
- Department
of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
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9
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Nehmé R, Atieh C, Fayad S, Claude B, Chartier A, Tannoury M, Elleuch F, Abdelkafi S, Pichon C, Morin P. Microalgae amino acid extraction and analysis at nanomolar level using electroporation and capillary electrophoresis with laser-induced fluorescence detection. J Sep Sci 2016; 40:558-566. [DOI: 10.1002/jssc.201601005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/25/2016] [Accepted: 10/26/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Reine Nehmé
- Institut de Chimie Organique et Analytique (ICOA); Université d'Orléans; Orléans France
| | - Carla Atieh
- Institut de Chimie Organique et Analytique (ICOA); Université d'Orléans; Orléans France
| | - Syntia Fayad
- Institut de Chimie Organique et Analytique (ICOA); Université d'Orléans; Orléans France
| | - Bérengère Claude
- Institut de Chimie Organique et Analytique (ICOA); Université d'Orléans; Orléans France
| | - Agnès Chartier
- Institut de Chimie Organique et Analytique (ICOA); Université d'Orléans; Orléans France
| | - Mona Tannoury
- Département de Biologie, Faculté des Sciences II; Université Libanaise; Fanar Liban
| | - Fatma Elleuch
- Biotechnologie des algues, Département de Génie biologique, Ecole Nationale d'Ingénieurs de Sfax; University of Sfax; Tunisia
- Centre de Biophysique moléculaire; et Université d'Orléans; France
| | - Slim Abdelkafi
- Biotechnologie des algues, Département de Génie biologique, Ecole Nationale d'Ingénieurs de Sfax; University of Sfax; Tunisia
| | - Chantal Pichon
- Centre de Biophysique moléculaire; et Université d'Orléans; France
| | - Philippe Morin
- Institut de Chimie Organique et Analytique (ICOA); Université d'Orléans; Orléans France
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10
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Furmaniak P, Kubalczyk P, Stachniuk J, Głowacki R. Novel MEKC method for determination of sodium 2-mercaptoethanesulfonate in human plasma with in-capillary derivatization and UV detection. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1027:88-95. [DOI: 10.1016/j.jchromb.2016.05.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/16/2016] [Accepted: 05/20/2016] [Indexed: 12/13/2022]
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11
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Štěpánová S, Kašička V. Recent applications of capillary electromigration methods to separation and analysis of proteins. Anal Chim Acta 2016; 933:23-42. [DOI: 10.1016/j.aca.2016.06.006] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/10/2016] [Accepted: 06/03/2016] [Indexed: 10/21/2022]
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12
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Cheng C, Jiang T, Han J, Lv K, Hu S, Wang X. Capillary electrophoresis coupled with in-column fiber-optic laser-induced fluorescence detection for the rapid separation of neodymium. Electrophoresis 2016; 37:2657-2662. [PMID: 27346878 DOI: 10.1002/elps.201600215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 06/18/2016] [Accepted: 06/20/2016] [Indexed: 01/20/2023]
Abstract
In this study, in-column fiber-optic (ICFO) laser-induced fluorescence (LIF) detection technique is coupled with capillary electrophoresis (CE) for the rapid separation of neodymium for the first time. The effects of buffer concentration, buffer pH, and separation voltage on the CE behaviors, including electrophoretic efficiency and detection sensitivity, are investigated in detail. Under the optimal condition determined in this study (15 mM borate buffer, pH 10.50, separation voltage 24 kV), neodymium could be separated effectively from the neighboring lanthanides (praseodymium and samarium) within several minutes, and the limit of detection for neodymium is estimated to be at the ppt level. The ICFO-LIF-CE system assembled in this study exhibits unique performance characteristics such as low cost and flexibility. Meanwhile, the separation efficiency and detection sensitivity of the assembled CE system are comparable to or somewhat better than those obtained in the previous traditional CE systems, indicating the potential of the assembled CE system for practical applications in the fields of spent nuclear fuel analysis, nuclear waste disposal/treatment, and nuclear forensics.
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Affiliation(s)
- Changming Cheng
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, P. R. China
| | - Tao Jiang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, P. R. China
| | - Jun Han
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, P. R. China
| | - Kai Lv
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, P. R. China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, P. R. China.
| | - Xiaolin Wang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, P. R. China.
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13
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Galievsky VA, Stasheuski AS, Krylov SN. "Getting the best sensitivity from on-capillary fluorescence detection in capillary electrophoresis" - A tutorial. Anal Chim Acta 2016; 935:58-81. [PMID: 27543015 DOI: 10.1016/j.aca.2016.06.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 06/09/2016] [Accepted: 06/11/2016] [Indexed: 01/09/2023]
Abstract
Capillary electrophoresis with Laser-Induced Fluorescence (CE-LIF) detection is being applied to new analytical problems which challenge both the power of CE separation and the sensitivity of LIF detection. On-capillary LIF detection is much more practical than post-capillary detection in a sheath-flow cell. Therefore, commercial CE instruments utilize solely on-capillary CE-LIF detection with a Limit of Detection (LOD) in the nM range, while there are multiple applications of CE-LIF that require pM or lower LODs. This tutorial analyzes all aspects of on-capillary LIF detection in CE in an attempt to identify means for improving LOD of CE-LIF with on-capillary detection. We consider principles of signal enhancement and noise reduction, as well as relevant areas of fluorophore photochemistry and fluorescent microscopy.
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Affiliation(s)
- Victor A Galievsky
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Alexander S Stasheuski
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Sergey N Krylov
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada.
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14
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Švidrnoch M, Přibylka A, Bekárek V, Ševčík J, Smolka V, Maier V. Enantioseparation of d,l-2-hydroxyglutaric acid by capillary electrophoresis with tandem mass spectrometry-Fast and efficient tool for d- and l-2-hydroxyglutaracidurias diagnosis. J Chromatogr A 2016; 1467:383-390. [PMID: 27295961 DOI: 10.1016/j.chroma.2016.05.095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 05/26/2016] [Accepted: 05/26/2016] [Indexed: 12/27/2022]
Abstract
A novel capillary electrophoresis-tandem mass spectrometry method for the enantioseparation and identification of 2-hydroxyglutaric acid enantiomers without derivatization for clinical purposes was described. Vancomycin chloride was used as an efficient chiral selector for the discrimination of 2-hydroxyglutaric acid enantiomers by capillary electrophoresis employed complete capillary filling method. The obtained resolution was 2.05. Hyphenation of CE with tandem mass spectrometry allows a reliable identification of separated enantiomers as well as their quantification. The method was validated and applied for the separation, identification and determination of 2-hydroxyglutaric enantiomers in urine samples obtained from healthy patients and two urine samples obtained from child patients suffering from high urine excretion of 2-hydroxyglutaric acid. Abnormal excretion of d-hydroxyglutaric acid was found in both child urine samples (104.5±2.1 and 2200.0±12.6mmol/mol of creatinine, respectively). The limits of detection for d- and l-hydroxyglutaric acid were 31 and 38nmol/L, respectively.
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Affiliation(s)
- Martin Švidrnoch
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, in Olomouc, 17. listopadu 12, Olomouc CZ-77146, Czech Republic
| | - Adam Přibylka
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, in Olomouc, 17. listopadu 12, Olomouc CZ-77146, Czech Republic
| | - Vojtěch Bekárek
- Laboratory for Inherited Metabolic Disorders, Department of Clinical Biochemistry, University Hospital, I. P. Pavlova 6, CZ-77520 Olomouc, Czech Republic; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University in Olomouc, Hněvotínská 5, CZ-77900 Olomouc, Czech Republic
| | - Juraj Ševčík
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, in Olomouc, 17. listopadu 12, Olomouc CZ-77146, Czech Republic
| | - Vratislav Smolka
- Child Clinic, Faculty of Medicine, Palacký University in Olomouc, Hněvotínská 3, Olomouc, Czech Republic
| | - Vítězslav Maier
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, in Olomouc, 17. listopadu 12, Olomouc CZ-77146, Czech Republic.
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15
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Recent advances in capillary electrophoretic migration techniques for pharmaceutical analysis (2013-2015). Electrophoresis 2016; 37:1591-608. [DOI: 10.1002/elps.201600058] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 03/04/2016] [Accepted: 03/04/2016] [Indexed: 11/07/2022]
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16
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Oukacine F, Quirino JP, Mesbah K, Taverna M. Capillary electrophoretic focusing of covalently derivatized protein induced by surfactant. Electrophoresis 2016; 37:1151-4. [DOI: 10.1002/elps.201600030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 02/21/2016] [Accepted: 02/22/2016] [Indexed: 01/10/2023]
Affiliation(s)
- Farid Oukacine
- Université Grenoble Alpes; DPM UMR 5063; CNRS Grenoble France
| | - Joselito P. Quirino
- Australian Centre for Research on Separation Science, School of Physical Sciences-Chemistry; University of Tasmania; Hobart Tasmania Australia
| | - Kiarach Mesbah
- Inst Galien Paris Sud; Fac Pharm; 5 Rue JB Clement, F-92290 Chatenay Malabry France
| | - Myriam Taverna
- Inst Galien Paris Sud; Fac Pharm; 5 Rue JB Clement, F-92290 Chatenay Malabry France
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