1
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Graf HG, Rudisch BM, Ude L, Müller L, Huhn C. Picomolar detection limits for glyphosate by two-dimensional column-coupled isotachophoresis/capillary zone electrophoresis-mass spectrometry. J Sep Sci 2022; 45:3887-3899. [PMID: 35998068 DOI: 10.1002/jssc.202200519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/09/2022]
Abstract
Capillary electrophoresis-mass spectrometry often lacks sufficient limits of detection for trace substances in the environment due to its low loadability. To overcome this problem, we conducted a feasibility study for column-coupling isotachophoresis to capillary electrophoresis-mass spectrometry. The first dimension isotachophoresis preconcentrated the analytes. The column-coupling of both dimensions was achieved by a hybrid capillary microfluidic chip setup. Reliable analyte transfer by voltage switching was enabled by an in-chip capacitively coupled contactless conductivity detector placed around the channel of the common section between two T-shaped crossings in the chip connecting both dimensions. This eliminated the need to calculate the moment of analyte transfer. A commercial capillary electrophoresis-mass spectrometry instrument with easily installable adaptations operated the setup. Prior to coupling isotachophoresis with capillary zone electrophoresis-mass spectrometry, both dimensions were optimized individually by simulations and verified experimentally. Both dimensions were able to stack/separate all degradation products of glyphosate, the most important herbicide applied worldwide. The first dimension isotachophoresis also removed phosphate, which is a critical matrix component in many environmental samples. Enrichment and separation of glyphosate and its main degradation product aminomethylphosphonic acid by the 2D setup provided an excellent limit of detection of 150 pM (25 ng/L) for glyphosate. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hannes Georg Graf
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - Lukas Ude
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Linda Müller
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Carolin Huhn
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Tübingen, Germany
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2
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Cizmarova I, Matuskova M, Stefanik O, Horniakova A, Mikus P, Piestansky J. Determination of thiamine and pyridoxine in food supplements by a green ultrasensitive two-dimensional capillary electrophoresis hyphenated with mass spectrometry. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02309-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Piestansky J, Cizmarova I, Matuskova M, Mikus P. Comparison of 1D a 2D ITP-MS performance parameters and application possibilities: Ultratrace determination of B vitamins in human urine. Electrophoresis 2021; 43:998-1009. [PMID: 34597419 DOI: 10.1002/elps.202100209] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/06/2021] [Accepted: 09/25/2021] [Indexed: 12/21/2022]
Abstract
The possibility to investigate analytes at ultra-low concentration levels still remains a hot topic in bioanalysis. In this area, various preconcentration techniques are an integral part of analytical procedures. When applying electromigration separation techniques, an isotachophoresis has been advantageously employed many times for this purpose. To solve current biomedical tasks effectively, an advanced two-dimensional isotachophoretic instrument (in a hydrodynamically closed separation system with an enhanced sample load capacity) hyphenated with mass spectrometry (ITP-ITP-MS) has been proposed by Foret and coworkers. As a continuation, this work represents the first study dealing with a full validation of an ITP-ITP-MS method. In order to see the benefits of an online ITP sample pretreatment (preconcentration and clean-up) on the performance parameters, the developed 2D ITP-MS method was compared with a corresponding 1D ITP-MS method. Application potentialities of the compared methods were demonstrated via a determination of two B vitamins, namely thiamine and pyridoxine, in human urine samples. The developed 2D ITP-MS method showed its enhanced effectivity and usefulness for a routine biomedical use (here, a reliable screening of trace B vitamins in human urine without an offline sample preparation).
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Affiliation(s)
- Juraj Piestansky
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic.,Toxicological and Antidoping Center, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic
| | - Ivana Cizmarova
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic
| | - Michaela Matuskova
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic
| | - Peter Mikus
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic.,Toxicological and Antidoping Center, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic
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4
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Piestansky J, Matuskova M, Cizmarova I, Majerova P, Kovac A, Mikus P. Ultrasensitive determination of serotonin in human urine by a two dimensional capillary isotachophoresis-capillary zone electrophoresis hyphenated with tandem mass spectrometry. J Chromatogr A 2021; 1648:462190. [PMID: 33979756 DOI: 10.1016/j.chroma.2021.462190] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 12/11/2022]
Abstract
A two-dimensional capillary isotachophoresis-capillary zone electrophoresis method hyphenated with tandem mass spectrometry was developed and validated for ultrasensitive quantification of serotonin in real human urine samples. Under optimal conditions, the separation was achieved within 12 min (including on-line sample preparation) with the limit of detection of 34 pg mL-1 (due to a large volume sample injection, here 10 µL, and isotachophoretic preconcentration). This concentration limit represents the lowest value for serotonin in comparison to other previously published separation methods employing mass spectrometry detection and applied to urine matrices. Thanks to high orthogonality, on-line concentration and clean-up effects of this approach, other excellent validation parameters such as linearity (coefficient of determination > 0.99), inter-day and intra-day precision (relative standard deviations 3.5-12.2%), accuracy (relative errors within 99-109.4%), and recovery (96-102%) could be easily obtained too. To demonstrate applicability of the method, we monitored serotonin levels in various real samples (from a healthy volunteer and clinical ones). The determined levels, normalized on the creatinine concentrations, were in the range of 6.81-12.86 ng mmol-1 creatinine This advanced method is suggested for an effective, reliable, high sample throughput, and low cost routine clinical screening or targeted metabolomic studies of serotonin in urine samples.
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Affiliation(s)
- Juraj Piestansky
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic; Toxicological and Antidoping Center, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic
| | - Michaela Matuskova
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic
| | - Ivana Cizmarova
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic
| | - Petra Majerova
- Institute of Neuroimmunology, Slovak Academy of Sciences, Dubravska cesta 9, 84510 Bratislava, Slovak Republic
| | - Andrej Kovac
- Institute of Neuroimmunology, Slovak Academy of Sciences, Dubravska cesta 9, 84510 Bratislava, Slovak Republic
| | - Peter Mikus
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic; Toxicological and Antidoping Center, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic.
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5
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Maráková K, Piešťanský J, Zelinková Z, Mikuš P. Simultaneous determination of twelve biogenic amines in human urine as potential biomarkers of inflammatory bowel diseases by capillary electrophoresis – tandem mass spectrometry. J Pharm Biomed Anal 2020; 186:113294. [DOI: 10.1016/j.jpba.2020.113294] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/23/2020] [Accepted: 03/28/2020] [Indexed: 12/17/2022]
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6
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Melzer T, Wimmer B, Bock S, Posch TN, Huhn C. Challenges and applications of isotachophoresis coupled to mass spectrometry: A review. Electrophoresis 2020; 41:1045-1059. [DOI: 10.1002/elps.201900454] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 12/30/2022]
Affiliation(s)
- Tanja Melzer
- Institute of Physical and Theoretical ChemistryEberhard Karls Universität Tübingen Germany
| | - Benedikt Wimmer
- Institute of Physical and Theoretical ChemistryEberhard Karls Universität Tübingen Germany
| | - Stephanie Bock
- Institute of Physical and Theoretical ChemistryEberhard Karls Universität Tübingen Germany
| | | | - Carolin Huhn
- Institute of Physical and Theoretical ChemistryEberhard Karls Universität Tübingen Germany
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7
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Capillary moving-boundary isotachophoresis with electrospray ionization mass-spectrometric detection and hydrogen ion used as essential terminator: Methodology for sensitive analysis of hydroxyderivatives of s -triazine herbicides in waters. J Chromatogr A 2017; 1518:97-103. [DOI: 10.1016/j.chroma.2017.08.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/24/2017] [Accepted: 08/26/2017] [Indexed: 11/19/2022]
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8
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Phillips TM. Recent advances in CE and microchip-CE in clinical applications: 2014 to mid-2017. Electrophoresis 2017; 39:126-135. [PMID: 28853177 DOI: 10.1002/elps.201700283] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 11/11/2022]
Abstract
CE and microchip CE (ME) are powerful tools for the analysis of a number of different analytes and have been applied to a variety of clinical fields and human samples. This review will present an overview of the most recent applications of these techniques to different areas of clinical medicine during the period of 2014 to mid-2017. CE and ME have been applied to clinical chemistry, drug detection and monitoring, hematology, infectious diseases, oncology, endocrinology, neonatology, nephrology, and genetic screening. Samples examined range from serum, plasma, and urine to lest utilized materials such as tears, cerebral spinal fluid, sweat, saliva, condensed breath, single cells, and biopsy tissue. Examples of clinical applications will be given along with the various detection systems employed.
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Affiliation(s)
- Terry M Phillips
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA
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9
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Jiang Y, He MY, Zhang WJ, Luo P, Guo D, Fang X, Xu W. Recent advances of capillary electrophoresis-mass spectrometry instrumentation and methodology. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.05.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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10
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Breadmore MC, Wuethrich A, Li F, Phung SC, Kalsoom U, Cabot JM, Tehranirokh M, Shallan AI, Abdul Keyon AS, See HH, Dawod M, Quirino JP. Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2014–2016). Electrophoresis 2016; 38:33-59. [DOI: 10.1002/elps.201600331] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 08/09/2016] [Accepted: 08/10/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Michael C. Breadmore
- Australian Centre of Research on Separation Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
- ARC Centre of Excellence for Electromaterials Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
- ASTech, ARC Training Centre for Portable Analytical Separation Technologies, School of Physical Science University of Tasmania Hobart Tasmania Australia
| | - Alain Wuethrich
- Australian Centre of Research on Separation Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
| | - Feng Li
- Australian Centre of Research on Separation Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
| | - Sui Ching Phung
- Australian Centre of Research on Separation Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
| | - Umme Kalsoom
- Australian Centre of Research on Separation Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
| | - Joan M. Cabot
- Australian Centre of Research on Separation Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
- ARC Centre of Excellence for Electromaterials Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
| | - Masoomeh Tehranirokh
- ASTech, ARC Training Centre for Portable Analytical Separation Technologies, School of Physical Science University of Tasmania Hobart Tasmania Australia
| | - Aliaa I. Shallan
- Department of Analytical Chemistry, Faculty of Pharmacy Helwan University Cairo Egypt
| | - Aemi S. Abdul Keyon
- Department of Chemistry, Faculty of Science Universiti Teknologi Malaysia Johor Bahru Johor Malaysia
| | - Hong Heng See
- Department of Chemistry, Faculty of Science Universiti Teknologi Malaysia Johor Bahru Johor Malaysia
- Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and industrial Research Universiti Teknologi Malaysia Johor Bahru Johor Malaysia
| | - Mohamed Dawod
- Department of Chemistry University of Michigan Ann Arbor MI USA
| | - Joselito P. Quirino
- Australian Centre of Research on Separation Science, School of Physical Science University of Tasmania Hobart Tasmania Australia
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11
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Týčová A, Ledvina V, Klepárník K. Recent advances in CE-MS coupling: Instrumentation, methodology, and applications. Electrophoresis 2016; 38:115-134. [DOI: 10.1002/elps.201600366] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 08/30/2016] [Accepted: 08/30/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Anna Týčová
- Institute of Analytical Chemistry; Czech Academy of Sciences; Brno Czech Republic
| | - Vojtěch Ledvina
- Institute of Analytical Chemistry; Czech Academy of Sciences; Brno Czech Republic
| | - Karel Klepárník
- Institute of Analytical Chemistry; Czech Academy of Sciences; Brno Czech Republic
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12
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Malá Z, Gebauer P, Boček P. Analytical capillary isotachophoresis after 50 years of development: Recent progress 2014-2016. Electrophoresis 2016; 38:9-19. [DOI: 10.1002/elps.201600289] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 07/15/2016] [Accepted: 07/15/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Zdena Malá
- Institute of Analytical Chemistry of the Czech Academy of Sciences; v.v.i; Brno Czech Republic
| | - Petr Gebauer
- Institute of Analytical Chemistry of the Czech Academy of Sciences; v.v.i; Brno Czech Republic
| | - Petr Boček
- Institute of Analytical Chemistry of the Czech Academy of Sciences; v.v.i; Brno Czech Republic
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13
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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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14
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Rani S, Malik AK, Kaur R, Kaur R. A Review for the Analysis of Antidepressant, Antiepileptic and Quinolone Type Drugs in Pharmaceuticals and Environmental Samples. Crit Rev Anal Chem 2016; 46:424-42. [DOI: 10.1080/10408347.2016.1141670] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Susheela Rani
- Department of Chemistry, Punjabi University, Patiala, Punjab, India
| | | | - Ramandeep Kaur
- Department of Chemistry, Punjabi University, Patiala, Punjab, India
| | - Ripneel Kaur
- Department of Chemistry, Punjabi University, Patiala, Punjab, India
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15
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Yehia AM, Mohamed HM. Green approach using monolithic column for simultaneous determination of coformulated drugs. J Sep Sci 2016; 39:2114-22. [PMID: 27062581 DOI: 10.1002/jssc.201600081] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/23/2016] [Accepted: 03/29/2016] [Indexed: 11/10/2022]
Abstract
Green chemistry and sustainability is now entirely encompassed across the majority of pharmaceutical companies and research labs. Researchers' attention is careworn toward implementing the green analytical chemistry principles for more eco-friendly analytical methodologies. Solvents play a dominant role in determining the greenness of the analytical procedure. Using safer solvents, the greenness profile of the methodology could be increased remarkably. In this context, a green chromatographic method has been developed and validated for the simultaneous determination of phenylephrine, paracetamol, and guaifenesin in their ternary pharmaceutical mixture. The chromatographic separation was carried out using monolithic column and green solvents as mobile phase. The use of monolithic column allows efficient separation protocols at higher flow rates, which results in short time of analysis. Two-factor three-level experimental design was used to optimize the chromatographic conditions. The greenness profile of the proposed methodology was assessed using eco-scale as a green metrics and was found to be an excellent green method with regard to the usage and production of hazardous chemicals and solvents, energy consumption, and amount of produced waste. The proposed method improved the environmental impact without compromising the analytical performance criteria and could be used as a safer alternate for the routine analysis of the studied drugs.
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Affiliation(s)
- Ali M Yehia
- Faculty of Pharmacy, Analytical Chemistry Department, Cairo University, Cairo, Egypt
| | - Heba M Mohamed
- Faculty of Pharmacy, Analytical Chemistry Department, Cairo University, Cairo, Egypt
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16
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Md Ali MA, Ostrikov K(K, Khalid FA, Majlis BY, Kayani AA. Active bioparticle manipulation in microfluidic systems. RSC Adv 2016. [DOI: 10.1039/c6ra20080j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The motion of bioparticles in a microfluidic environment can be actively controlled using several tuneable mechanisms, including hydrodynamic, electrophoresis, dielectrophoresis, magnetophoresis, acoustophoresis, thermophoresis and optical forces.
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Affiliation(s)
- Mohd Anuar Md Ali
- Institute of Microengineering and Nanoelectronics
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
| | - Kostya (Ken) Ostrikov
- School of Chemistry, Physics, and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
- CSIRO-QUT Joint Sustainable Processes and Devices Laboratory
| | - Fararishah Abdul Khalid
- Faculty of Technology Management and Technopreneurship
- Universiti Teknikal Malaysia Melaka
- Malaysia
| | - Burhanuddin Y. Majlis
- Institute of Microengineering and Nanoelectronics
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
| | - Aminuddin A. Kayani
- Institute of Microengineering and Nanoelectronics
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
- Center for Advanced Materials and Green Technology
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17
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Piešťanský J, Maráková K, Kovaľ M, Havránek E, Mikuš P. Enantioselective column coupled electrophoresis employing large bore capillaries hyphenated with tandem mass spectrometry for ultra-trace determination of chiral compounds in complex real samples. Electrophoresis 2015; 36:3069-79. [DOI: 10.1002/elps.201500351] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/07/2015] [Accepted: 09/07/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Juraj Piešťanský
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy; Comenius University in Bratislava; Bratislava Slovak Republic
- Toxicological and Antidoping Center, Faculty of Pharmacy; Comenius University in Bratislava; Bratislava Slovak Republic
| | - Katarína Maráková
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy; Comenius University in Bratislava; Bratislava Slovak Republic
- Toxicological and Antidoping Center, Faculty of Pharmacy; Comenius University in Bratislava; Bratislava Slovak Republic
| | - Marián Kovaľ
- Villa Labeco spol. s r. o; Spišská Nová Ves Slovak Republic
| | - Emil Havránek
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy; Comenius University in Bratislava; Bratislava Slovak Republic
| | - Peter Mikuš
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy; Comenius University in Bratislava; Bratislava Slovak Republic
- Toxicological and Antidoping Center, Faculty of Pharmacy; Comenius University in Bratislava; Bratislava Slovak Republic
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18
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Pincová L, Petrů K, Pospíšilová M, Polášek M. Micellar electrokinetic chromatography with short-end injection for rapid separation and simultaneous determination of aesculin, aesculetin, and phenylephrine in pharmaceutical preparations. Electrophoresis 2015; 36:2754-2761. [DOI: 10.1002/elps.201500215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/25/2015] [Accepted: 07/28/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Lucie Pincová
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové; Charles University in Prague; Hradec Králové Czech Republic
| | - Klára Petrů
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové; Charles University in Prague; Hradec Králové Czech Republic
| | - Marie Pospíšilová
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové; Charles University in Prague; Hradec Králové Czech Republic
| | - Miroslav Polášek
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové; Charles University in Prague; Hradec Králové Czech Republic
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