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Hefnawy M, El-Gendy M, Al-Salem H, Marenga H, El-Azab A, Abdel-Aziz A, Gamal AE, Alanazi M, Obaidullah A, Al-Hossaini A, Hefnawy A. Trends in monoliths: Packings, stationary phases and nanoparticles. J Chromatogr A 2023; 1691:463819. [PMID: 36724721 DOI: 10.1016/j.chroma.2023.463819] [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: 09/27/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/26/2023]
Abstract
Monoliths media are gaining interest as excellent substitutes to conventional particle-packed columns. Monolithic columns show higher permeability and lower flow resistance than conventional liquid chromatography columns, providing high-throughput performance, resolution and separation in short run times. Monolithic columns with longer length, smaller inner diameter and specific selectivity to peptides or enantiomers have been played important role in hyphenated system. Monolithic stationary phases possess great efficiency, resolution, selectivity and sensitivity in the separation of complex biological samples, such as the complex mixtures of peptides for proteome analysis. The development of monolithic stationary phases has opened the new avenue in chromatographic separation science and is in turn playing much more important roles in the wide application area. Monolithic stationary phases have been widely used in fast and high efficiency one- and multi-dimensional separation systems, miniaturized devices, and hyphenated system coupled with mass spectrometers. The developing technology for preparation of monolithic stationary phases is revolutionizing the column technology for the separation of complex biological samples. These techniques using porous monoliths offer several advantages, including miniaturization and on-line coupling with analytical instruments. Additionally, monoliths are ideal support media for imprinting template-specific sites, resulting in the so-called molecularly-imprinted monoliths, with ultra-high selectivity. In this review, the origin of the concept, the differences between their characteristics and those of traditional packings, their advantages and drawbacks, theory of separations, the methods for the monoliths preparation of different forms, nanoparticle monoliths and metal-organic framework are discussed. Two application areas of monolithic metal-organic framework and nanoparticle monoliths are provided. The review article discusses the results reported in a total of 218 references. Other older references were included to illustrate the historical development of monoliths, both in preparation and types, as well as separation mechanism.
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Affiliation(s)
- Mohamed Hefnawy
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia; Department of Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
| | - Manal El-Gendy
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Huda Al-Salem
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Hanin Marenga
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Adel El-Azab
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Alaa Abdel-Aziz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ali El Gamal
- Department of Pharmacognosy and Medicinal, Aromatic & Poisonous Plant Research Center (MAPPRC), College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohammed Alanazi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ahmad Obaidullah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdullah Al-Hossaini
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdullah Hefnawy
- Faculty of Medicine, Mansoura Manchester Medical Program, Mansoura University, Mansoura, Egypt
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Lubomirsky E, Khodabandeh A, Preis J, Susewind M, Hofe T, Hilder EF, Arrua RD. Polymeric stationary phases for size exclusion chromatography: A review. Anal Chim Acta 2021; 1151:338244. [PMID: 33608083 DOI: 10.1016/j.aca.2021.338244] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 11/17/2022]
Abstract
Synthetic and natural macromolecules are commonly used in a variety of fields such as plastics, nanomedicine, biotherapeutics, drug delivery and tissue engineering. Characterising macromolecules in terms of their structural parameters (size, molar mass and distribution, architecture) is key to have a better understanding of their structure-property relationships. Size exclusion chromatography (SEC) is a commonly used technique for polymer characterization since it offers access to the determination of the size of a macromolecule, its molar mass and the molar mass distribution. Moreover, detectors that allow the determination of true molar masses, macromolecule's architecture and the composition of copolymers can be coupled to the chromatographic system. Like other chromatographic techniques, the stationary phase is of paramount importance for efficient SEC separations. This review presents the basic principles for the design of stationary phases for SEC as well as synthetic methods currently used in the field. Current status of fully-porous polymeric stationary phases used in SEC is reviewed and their advantages and limitations are also discussed. Finally, the potential of polymer monoliths in SEC is also covered, highlighting the limitations this column technology could address. However, further development in the polymer structure is needed to consider this column technology in the field of macromolecule separation.
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Affiliation(s)
- Ester Lubomirsky
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, South Australia, 5095, Australia
| | - Aminreza Khodabandeh
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, South Australia, 5095, Australia
| | - Jasmin Preis
- Polymer Standards Service GmbH, In der Dalheimer Wiese 5, Mainz, 55120, Germany
| | - Moritz Susewind
- Polymer Standards Service GmbH, In der Dalheimer Wiese 5, Mainz, 55120, Germany
| | - Thorsten Hofe
- Polymer Standards Service GmbH, In der Dalheimer Wiese 5, Mainz, 55120, Germany
| | - Emily F Hilder
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, South Australia, 5095, Australia
| | - R Dario Arrua
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, South Australia, 5095, Australia.
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Ma S, Li Y, Ma C, Wang Y, Ou J, Ye M. Challenges and Advances in the Fabrication of Monolithic Bioseparation Materials and their Applications in Proteomics Research. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902023. [PMID: 31502719 DOI: 10.1002/adma.201902023] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 06/29/2019] [Indexed: 06/10/2023]
Abstract
High-performance liquid chromatography integrated with tandem mass spectrometry (HPLC-MS/MS) has become a powerful technique for proteomics research. Its performance heavily depends on the separation efficiency of HPLC, which in turn depends on the chromatographic material. As the "heart" of the HPLC system, the chromatographic material is required to achieve excellent column efficiency and fast analysis. Monolithic materials, fabricated as continuous supports with interconnected skeletal structure and flow-through pores, are regarded as an alternative to particle-packed columns. Such materials are featured with easy preparation, fast mass transfer, high porosity, low back pressure, and miniaturization, and are next-generation separation materials for high-throughput proteins and peptides analysis. Herein, the recent progress regarding the fabrication of various monolithic materials is reviewed. Special emphasis is placed on studies of the fabrication of monolithic capillary columns and their applications in separation of biomolecules by capillary liquid chromatography (cLC). The applications of monolithic materials in the digestion, enrichment, and separation of phosphopeptides and glycopeptides from biological samples are also considered. Finally, advances in comprehensive 2D HPLC separations using monolithic columns are also shown.
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Affiliation(s)
- Shujuan Ma
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Ya Li
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Chen Ma
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Yan Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Junjie Ou
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mingliang Ye
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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Navarro-Huerta J, Carrasco-Correa E, Torres-Lapasió J, Herrero-Martínez J, García-Alvarez-Coque M. Modelling retention and peak shape of small polar solutes analysed by nano-HPLC using methacrylate-based monolithic columns. Anal Chim Acta 2019; 1086:142-155. [DOI: 10.1016/j.aca.2019.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/23/2019] [Accepted: 08/06/2019] [Indexed: 12/15/2022]
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Maya F, Paull B. Recent strategies to enhance the performance of polymer monoliths for analytical separations. J Sep Sci 2019; 42:1564-1576. [DOI: 10.1002/jssc.201801126] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/21/2019] [Accepted: 02/13/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Fernando Maya
- Australian Centre for Research on Separation Science (ACROSS)School of Natural Sciences‐ChemistryUniversity of Tasmania Hobart TAS Australia
| | - Brett Paull
- Australian Centre for Research on Separation Science (ACROSS)School of Natural Sciences‐ChemistryUniversity of Tasmania Hobart TAS Australia
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A novel one-pot strategy to prepare β-cyclodextrin functionalized capillary monoliths for enantioseparation of basic drugs. Talanta 2018; 189:458-466. [DOI: 10.1016/j.talanta.2018.07.041] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 06/30/2018] [Accepted: 07/11/2018] [Indexed: 11/23/2022]
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7
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Mao Z, Qin X, Chen Z. Monolithic column functionalized with quinine derivative for anion‐exchange capillary electrochromatography. Electrophoresis 2018; 39:3006-3012. [DOI: 10.1002/elps.201800253] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/24/2018] [Accepted: 07/26/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Zhenkun Mao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of EducationWuhan University School of Pharmaceutical Sciences Wuhan P. R. China
| | - Xiaoning Qin
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of EducationWuhan University School of Pharmaceutical Sciences Wuhan P. R. China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of EducationWuhan University School of Pharmaceutical Sciences Wuhan P. R. China
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Carrasco-Correa EJ, Ferri M, Woiwode U, Ma Y, Herrero-Martínez JM, Ramis-Ramos G, Lindner W, Lämmerhofer M. Zwitterionic codeine-derived methacrylate monoliths for enantioselective capillary electrochromatography of chiral acids and chiral bases. Electrophoresis 2018; 39:2558-2565. [DOI: 10.1002/elps.201800126] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/22/2018] [Accepted: 06/23/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Enrique Javier Carrasco-Correa
- Institute of Pharmaceutical Sciences; University of Tübingen; Tübingen Germany
- Department of Analytical Chemistry; University of Valencia; Valencia Spain
| | - Martina Ferri
- Institute of Pharmaceutical Sciences; University of Tübingen; Tübingen Germany
- Department of Pharmaceutical Sciences; University of Perugia; Perugia Italy
| | - Ulrich Woiwode
- Institute of Pharmaceutical Sciences; University of Tübingen; Tübingen Germany
| | - Yubo Ma
- Institute of Pharmaceutical Sciences; University of Tübingen; Tübingen Germany
| | | | | | - Wolfgang Lindner
- Department of Analytical Chemistry; University of Vienna; Vienna Austria
- Lindner Consulting GmbH; Klosterneuburg Austria
| | - Michael Lämmerhofer
- Institute of Pharmaceutical Sciences; University of Tübingen; Tübingen Germany
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Gökaltun A, Tuncel A. Post-polymerization modification of a new reactive monolith for reversed phase and hydrophilic interaction capillary electrochromatography of neutral, polar, and biologically active compounds. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4320] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Aslıhan Gökaltun
- Hacettepe University; Chemical Engineering Department; Ankara 06532 Turkey
| | - Ali Tuncel
- Hacettepe University; Chemical Engineering Department; Ankara 06532 Turkey
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Al-Massaedh “AA, Pyell U. Mixed-Mode Acrylamide-Based Continuous Beds Bearing tert-Butyl Groups for Capillary Electrochromatography Synthesized Via Complexation of N-tert-Butylacrylamide with a Water-Soluble Cyclodextrin. Part II: Effect of Capillary Size and Polymerization Conditions on Morphology and Chromatographic Efficiency. Chromatographia 2017. [DOI: 10.1007/s10337-017-3408-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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11
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Capillary methacrylate-based monoliths by grafting from/to γ-ray polymerization on a tentacle-type reactive surface for the liquid chromatographic separations of small molecules and intact proteins. J Chromatogr A 2017; 1498:46-55. [DOI: 10.1016/j.chroma.2016.11.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/20/2016] [Accepted: 11/21/2016] [Indexed: 12/13/2022]
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Jurowski K, Kochan K, Walczak J, Barańska M, Piekoszewski W, Buszewski B. Analytical Techniques in Lipidomics: State of the Art. Crit Rev Anal Chem 2017; 47:418-437. [PMID: 28340309 DOI: 10.1080/10408347.2017.1310613] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Current studies related to lipid identification and determination, or lipidomics in biological samples, are one of the most important issues in modern bioanalytical chemistry. There are many articles dedicated to specific analytical strategies used in lipidomics in various kinds of biological samples. However, in such literature, there is a lack of articles dedicated to a comprehensive review of the actual analytical methodologies used in lipidomics. The aim of this article is to characterize the lipidomics methods used in modern bioanalysis according to the methodological point of view: (1) chromatography/separation methods, (2) spectroscopic methods and (3) mass spectrometry and also hyphenated methods. In the first part, we discussed thin layer chromatography (TLC), high-pressure liquid chromatography (HPLC), gas chromatography (GC) and capillary electrophoresis (CE). The second part includes spectroscopic techniques such as Raman spectroscopy (RS), Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (NMR). The third part is a synthetic review of mass spectrometry, matrix-assisted laser desorption/ionization (MALDI), hyphenated methods, which include liquid chromatography-mass spectrometry (LC-MS), gas chromatography-mass spectrometry (GC-MS) and also multidimensional techniques. Other aspects are the possibilities of the application of the described methods in lipidomics studies. Due to the fact that the exploration of new methods of lipidomics analysis and their applications in clinical and medical studies are still challenging for researchers working in life science, we hope that this review article will be very useful for readers.
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Affiliation(s)
- Kamil Jurowski
- a Kraków Higher School of Health Promotion , Krakow , Poland
| | - Kamila Kochan
- b Jagiellonian Centre for Experimental Therapeutics (JCET) , Jagiellonian University in Cracow , Cracow , Poland.,c Centre for Biospectroscopy and School of Chemistry , Monash University , Clayton , Victoria , Australia
| | - Justyna Walczak
- d Department of Environmental Chemistry and Bioanalytics , Faculty of Chemistry, Nicolaus Copernicus University , Torun , Poland
| | - Małgorzata Barańska
- b Jagiellonian Centre for Experimental Therapeutics (JCET) , Jagiellonian University in Cracow , Cracow , Poland.,e Department of Chemical Physics, Faculty of Chemistry , Jagiellonian University in Cracow , Cracow , Poland
| | - Wojciech Piekoszewski
- f Department of Analytical Chemistry, Faculty of Chemistry , Jagiellonian University in Cracow , Cracow , Poland.,g School of Biomedicine , Far Eastern Federal University , Vladivostok , Russia
| | - Bogusław Buszewski
- d Department of Environmental Chemistry and Bioanalytics , Faculty of Chemistry, Nicolaus Copernicus University , Torun , Poland
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Incorporation of zeolitic imidazolate framework (ZIF-8)-derived nanoporous carbons in methacrylate polymeric monoliths for capillary electrochromatography. Talanta 2017; 164:348-354. [DOI: 10.1016/j.talanta.2016.11.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 11/10/2016] [Accepted: 11/13/2016] [Indexed: 11/24/2022]
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Gaaz TS, Sulong AB, Kadhum AAH, Nassir MH, Al-Amiery AA. Optimizing Injection Molding Parameters of Different Halloysites Type-Reinforced Thermoplastic Polyurethane Nanocomposites via Taguchi Complemented with ANOVA. MATERIALS 2016; 9:ma9110947. [PMID: 28774069 PMCID: PMC5457251 DOI: 10.3390/ma9110947] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/13/2016] [Accepted: 11/17/2016] [Indexed: 11/16/2022]
Abstract
Halloysite nanotubes-thermoplastic polyurethane (HNTs-TPU) nanocomposites are attractive products due to increasing demands for specialized materials. This study attempts to optimize the parameters for injection just before marketing. The study shows the importance of the preparation of the samples and how well these parameters play their roles in the injection. The control parameters for injection are carefully determined to examine the mechanical properties and the density of the HNTs-TPU nanocomposites. Three types of modified HNTs were used as untreated HNTs (uHNTs), sulfuric acid treated (aHNTs) and a combined treatment of polyvinyl alcohol (PVA)-sodium dodecyl sulfate (SDS)-malonic acid (MA) (treatment (mHNTs)). It was found that mHNTs have the most influential effect of producing HNTs-TPU nanocomposites with the best qualities. One possible reason for this extraordinary result is the effect of SDS as a disperser and MA as a crosslinker between HNTs and PVA. For the highest tensile strength, the control parameters are demonstrated at 150 °C (injection temperature), 8 bar (injection pressure), 30 °C (mold temperature), 8 min (injection time), 2 wt % (HNTs loading) and mHNT (HNTs type). Meanwhile, the optimized combination of the levels for all six control parameters that provide the highest Young’s modulus and highest density was found to be 150 °C (injection temperature), 8 bar (injection pressure), 32 °C (mold temperature), 8 min (injection time), 3 wt % (HNTs loading) and mHNT (HNTs type). For the best tensile strain, the six control parameters are found to be 160 °C (injection temperature), 8 bar (injection pressure), 32 °C (mold temperature), 8 min (injection time), 2 wt % (HNTs loading) and mHNT (HNTs type). For the highest hardness, the best parameters are 140 °C (injection temperature), 6 bar (injection pressure), 30 °C (mold temperature), 8 min (injection time), 2 wt % (HNTs loading) and mHNT (HNTs type). The analyses are carried out by coordinating Taguchi and ANOVA approaches. Seemingly, mHNTs has shown its very important role in the resulting product.
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Affiliation(s)
- Tayser Sumer Gaaz
- Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, University Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.
- Department of Machinery Equipment Engineering Techniques, Technical College Al-Musaib, Al-Furat Al-Awsat Technical University, Al-Musaib 51009, Babil, Iraq.
| | - Abu Bakar Sulong
- Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, University Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.
| | - Abdul Amir H Kadhum
- Department of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.
| | - Mohamed H Nassir
- Program of Chemical Engineering, Taylor's University-Lakeside Campus, Subang Jaya 47500, Selangor, Malaysia.
| | - Ahmed A Al-Amiery
- Department of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.
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Astefanei A, Dapic I, Camenzuli M. Different Stationary Phase Selectivities and Morphologies for Intact Protein Separations. Chromatographia 2016; 80:665-687. [PMID: 28529348 PMCID: PMC5413533 DOI: 10.1007/s10337-016-3168-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 08/17/2016] [Accepted: 09/06/2016] [Indexed: 12/18/2022]
Abstract
The central dogma of biology proposed that one gene encodes for one protein. We now know that this does not reflect reality. The human body has approximately 20,000 protein-encoding genes; each of these genes can encode more than one protein. Proteins expressed from a single gene can vary in terms of their post-translational modifications, which often regulate their function within the body. Understanding the proteins within our bodies is a key step in understanding the cause, and perhaps the solution, to disease. This is one of the application areas of proteomics, which is defined as the study of all proteins expressed within an organism at a given point in time. The human proteome is incredibly complex. The complexity of biological samples requires a combination of technologies to achieve high resolution and high sensitivity analysis. Despite the significant advances in mass spectrometry, separation techniques are still essential in this field. Liquid chromatography is an indispensable tool by which low-abundant proteins in complex samples can be enriched and separated. However, advances in chromatography are not as readily adapted in proteomics compared to advances in mass spectrometry. Biologists in this field still favour reversed-phase chromatography with fully porous particles. The purpose of this review is to highlight alternative selectivities and stationary phase morphologies that show potential for application in top-down proteomics; the study of intact proteins.
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Affiliation(s)
- A. Astefanei
- Centre for Analytical Science in Amsterdam (CASA), Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - I. Dapic
- Centre for Analytical Science in Amsterdam (CASA), Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - M. Camenzuli
- Centre for Analytical Science in Amsterdam (CASA), Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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Vargas-Ruiz S, Schulreich C, Kostevic A, Tiersch B, Koetz J, Kakorin S, von Klitzing R, Jung M, Hellweg T, Wellert S. Extraction of model contaminants from solid surfaces by environmentally compatible microemulsions. J Colloid Interface Sci 2016; 471:118-126. [DOI: 10.1016/j.jcis.2016.03.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/02/2016] [Accepted: 03/03/2016] [Indexed: 11/28/2022]
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17
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Dembahri Z, Le Gac S, Tobal K, Chirani N, Rolando C, Benmouna F, Benmouna M. Polymer phase transition in n-lauryl methacrylate monoliths. POLYM INT 2016. [DOI: 10.1002/pi.5123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zahra Dembahri
- Université de Lille, CNRS, USR 3290, MSAP; Miniaturisation pour la Synthèse l'Analyse et la Protéomique; F-59000 Lille France
- Université de Lille, CNRS, FR 2638; Institut Eugène-Michel Chevreul; FR CNRS F-59000 Lille France
- Macromolecular Research Laboratory; Faculty of Sciences; University of Tlemcen BP119 Algeria
| | - Séverine Le Gac
- Université de Lille, CNRS, USR 3290, MSAP; Miniaturisation pour la Synthèse l'Analyse et la Protéomique; F-59000 Lille France
- Université de Lille, CNRS, FR 2638; Institut Eugène-Michel Chevreul; FR CNRS F-59000 Lille France
- MIRA Institute, MESA+ Institute for Nanotechnology; University of Twente The Netherlands
| | - Kamal Tobal
- Université de Lille, CNRS, USR 3290, MSAP; Miniaturisation pour la Synthèse l'Analyse et la Protéomique; F-59000 Lille France
- Université de Lille, CNRS, FR 2638; Institut Eugène-Michel Chevreul; FR CNRS F-59000 Lille France
| | - Naziha Chirani
- Université de Lille, CNRS, USR 3290, MSAP; Miniaturisation pour la Synthèse l'Analyse et la Protéomique; F-59000 Lille France
- Université de Lille, CNRS, FR 2638; Institut Eugène-Michel Chevreul; FR CNRS F-59000 Lille France
- Macromolecular Research Laboratory; Faculty of Sciences; University of Tlemcen BP119 Algeria
| | - Christian Rolando
- Université de Lille, CNRS, USR 3290, MSAP; Miniaturisation pour la Synthèse l'Analyse et la Protéomique; F-59000 Lille France
- Université de Lille, CNRS, FR 2638; Institut Eugène-Michel Chevreul; FR CNRS F-59000 Lille France
| | - Farida Benmouna
- Macromolecular Research Laboratory; Faculty of Sciences; University of Tlemcen BP119 Algeria
| | - Mustapha Benmouna
- Macromolecular Research Laboratory; Faculty of Sciences; University of Tlemcen BP119 Algeria
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Jiao X, Shen S, Shi T. One-pot preparation of a novel monolith for high performance liquid chromatography applications. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1007:100-9. [DOI: 10.1016/j.jchromb.2015.10.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 10/18/2015] [Accepted: 10/20/2015] [Indexed: 11/28/2022]
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19
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Carrasco-Correa EJ, Ramis-Ramos G, Herrero-Martínez JM. Hybrid methacrylate monolithic columns containing magnetic nanoparticles for capillary electrochromatography. J Chromatogr A 2015; 1385:77-84. [DOI: 10.1016/j.chroma.2015.01.044] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 12/19/2014] [Accepted: 01/14/2015] [Indexed: 10/24/2022]
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20
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Nema T, Chan EC, Ho PC. Applications of monolithic materials for sample preparation. J Pharm Biomed Anal 2014; 87:130-41. [DOI: 10.1016/j.jpba.2013.05.036] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 05/20/2013] [Accepted: 05/22/2013] [Indexed: 11/30/2022]
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21
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Chen XJ, Dinh NP, Zhao J, Wang YT, Li SP, Svec F. Effect of ion adsorption on CEC separation of small molecules using hypercrosslinked porous polymer monolithic capillary columns. J Sep Sci 2012; 35:1502-5. [PMID: 22740260 DOI: 10.1002/jssc.201200138] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Both poly(styrene-co-vinylbenzyl chloride-co-divinylbenzene) and poly(4-methylstyrene-co-vinylbenzyl chloride-co-divinylbenzene) monolithic columns have been hypercrosslinked and for the first time used to achieve capillary electrochromatographic separations. Although these columns do not contain ionizable functionalities, electroosmotic flow was observed due to adsorption of ions from a buffer solution contained in the mobile phase on the surface of the hydrophobic polymer. An increase of more than one order of magnitude was observed with the use of both monolithic polymers. The hypercrosslinking reaction creates a large surface area thus enabling adsorption of a much larger number of ions. Alkylbenzenes were successfully separated using the hypercrosslinked monolithic columns.
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Affiliation(s)
- Xiao-Jia Chen
- State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao SAR, P R China
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22
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Li Y, Aggarwal P, Tolley H, Lee M. Organic Monolith Column Technology for Capillary Liquid Chromatography. ADVANCES IN CHROMATOGRAPHY 2012; 50:237-80. [DOI: 10.1201/b11636-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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23
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Aydoğan C, Tuncel A, Denizli A. Polymethacrylate-based monolithic capillary column with weak cation exchange functionalities for capillary electrochromatography. J Sep Sci 2012; 35:1010-6. [DOI: 10.1002/jssc.201100927] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Cemil Aydoğan
- Department of Chemistry; Biochemistry division; Hacettepe University; Ankara Turkey
| | - Ali Tuncel
- Department of Chemical Engineering; Hacettepe University; Ankara Turkey
| | - Adil Denizli
- Department of Chemistry; Biochemistry division; Hacettepe University; Ankara Turkey
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24
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Mohammadzadeh Kakhki R. Application of crown ethers as stationary phase in the chromatographic methods. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0158-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Sakai-Kato K, Ota S, Hyodo K, Ishihara H, Kikuchi H, Kawanishi T. Size separation and size determination of liposomes. J Sep Sci 2011; 34:2861-5. [DOI: 10.1002/jssc.201100417] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 06/13/2011] [Accepted: 06/14/2011] [Indexed: 11/11/2022]
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26
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Guerrouache M, Millot MC, Carbonnier B. Capillary columns for reversed-phase CEC prepared via surface functionalization of polymer monolith with aromatic selectors. J Sep Sci 2011; 34:2271-8. [PMID: 21674794 DOI: 10.1002/jssc.201100188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 04/18/2011] [Accepted: 04/19/2011] [Indexed: 11/09/2022]
Abstract
Macroporous crosslinked organic polymers based on N-acryloxysuccinimide (NAS) and ethylene dimethacrylate (EDMA) were prepared in the confines of 75 μm id fused-silica capillaries by photoinitiated free radical copolymerization in the presence of 2-2'-azobisisobutyronitrile as initiator and toluene as porogen. Monoliths with good mechanical strength, large porosity as well as surface reactive sites (succinimide leaving groups) could be obtained. Nucleophilic aromatic derivatives, namely benzylamine, phenylbutylamine and naphthylamine were grafted on the monolith surface to introduce π-conjugated ligands to develop particular selectivity. Successful achievement of the post-copolymerization functionalization was ascertained on the basis of in situ chemical characterization by means of Raman spectroscopy. Electrochromatographic properties of π-functionalized poly(NAS-co-EDMA) regarding alkylbenzenes, polycyclic aromatic hydrocarbons, anilines and phenols were evaluated in terms of retention, selectivity and resolution. The as-designed monolithic columns exhibited π-π interaction in addition to hydrophobic interaction due to the aromatic and non-polar nature of the surface-grafted aromatic selectors. One of the major results of this study is that monolithic columns with mixed selectivity providing high potentiality for the separation of solutes with varied chemical structure variation can be obtained by the surface grafting of the appropriate selector. Herein, an example is given for the phenylbutylamine functionalized poly(NAS-co-EDMA) where the butyl and phenyl fragments afford enhanced hydrophobic and π-selectivity, respectively.
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Affiliation(s)
- Mohamed Guerrouache
- Institut de Chimie et des Matériaux Paris Est - Equipe Systémes Polyméres Complexes, CNRS - Université Paris Est Créteil Val-de-Marne, Thiais, France
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27
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Nischang I, Teasdale I, Brüggemann O. Porous polymer monoliths for small molecule separations: advancements and limitations. Anal Bioanal Chem 2010; 400:2289-304. [DOI: 10.1007/s00216-010-4579-6] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Accepted: 12/02/2010] [Indexed: 12/19/2022]
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28
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Ibrahim MEA, Zhou T, Lucy CA. Agglomerated silica monolithic column for hydrophilic interaction LC. J Sep Sci 2010; 33:773-8. [PMID: 20222075 DOI: 10.1002/jssc.200900698] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hydrophilic interaction LC (HILIC) has gained wide acceptance in recent years due to its ability to retain and separate polar compounds such as pharmaceuticals. Most commercial HILIC phases are particle based, which limit the speed with which HILIC separations can be performed. Herein, agglomerated silica monolithic columns are prepared by electrostatically attaching polyionic latex particles onto a silica monolith by simply flushing a suspension of the ionic latex through a silica monolith. Such phases retain the high efficiency and permeability of the native silica monolith, while the agglomerated phase is easy to introduce and provides excellent mass transfer. High %ACN in the mobile phase dramatically increases the efficiency and retention, consistent with HILIC behavior. Test analytes such as benzoates, nucleotides and amino acids are separated with plate heights of 25-110 microm. The high permeability of monoliths allows HILIC separations to be performed with baseline resolution in less than 15 s. Electrostatic repulsion-hydrophilic liquid interaction chromatographic retention behavior of the latex-coated monoliths is verified using amino acids as test analytes.
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29
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Woodward SD, Urbanova I, Nurok D, Svec F. Separation of peptides and oligonucleotides using a monolithic polymer layer and pressurized planar electrophoresis and electrochromatography. Anal Chem 2010; 82:3445-8. [PMID: 20364841 DOI: 10.1021/ac100392b] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The rapid separation of mixtures of six peptides using porous polymer monolithic layers in electrophoresis and pressurized planar electrochromatography modes has been achieved. The separations in the former mode were performed on a generic hydrophobic poly(butyl methacrylate-co-ethylene dimethacrylate) layer with no ionizable functionalities and required 2 min. This layer also enabled the separation of three oligonucleotides. The separation in the pressurized planar electrochromatographic mode was carried out using a negatively charged layer prepared via cografting of 2-acrylamido-2-methyl-1-propanesulfonic acid and 2-hydroxyethyl methacrylate on top of the generic hydrophobic monolith and was completed in 1 min.
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Affiliation(s)
- Scott D Woodward
- Department of Chemistry and Chemical Biology, Indiana University, Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202, USA
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30
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Optimization of preparation of poly (glycidyl methacrylate- divinylbenzene) monolithic column with orthogonal experiments for separation of small molecules. Se Pu 2010; 28:175-9. [DOI: 10.3724/sp.j.1123.2012.00175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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31
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Svec F. Porous polymer monoliths: amazingly wide variety of techniques enabling their preparation. J Chromatogr A 2010; 1217:902-24. [PMID: 19828151 PMCID: PMC2829304 DOI: 10.1016/j.chroma.2009.09.073] [Citation(s) in RCA: 423] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Revised: 09/11/2009] [Accepted: 09/28/2009] [Indexed: 10/20/2022]
Abstract
The porous polymer monoliths went a long way since their invention two decades ago. While the first studies applied the traditional polymerization processes at that time well established for the preparation of polymer particles, creativity of scientists interested in the monolithic structures has later led to the use of numerous less common techniques. This review article presents vast variety of methods that have meanwhile emerged. The text first briefly describes the early approaches used for the preparation of monoliths comprising standard free radical polymerizations and includes their development up to present days. Specific attention is paid to the effects of process variables on the formation of both porous structure and pore surface chemistry. Specific attention is also devoted to the use of photopolymerization. Then, several less common free radical polymerization techniques are presented in more detail such as those initiated by gamma-rays and electron beam, the preparation of monoliths from high internal phase emulsions, and cryogels. Living processes including stable free radicals, atom transfer radical polymerization, and ring-opening metathesis polymerization are also discussed. The review ends with description of preparation methods based on polycondensation and polyaddition reactions as well as on precipitation of preformed polymers affording the monolithic materials.
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Affiliation(s)
- Frantisek Svec
- The Molecular Foundry, E. O. Lawrence Berkeley National Laboratory, MS 67R6110, Berkeley, CA 94720-8139, USA.
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32
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Jandera P, Urban J, Škeříková V, Langmaier P, Kubíčková R, Planeta J. Polymethacrylate monolithic and hybrid particle-monolithic columns for reversed-phase and hydrophilic interaction capillary liquid chromatography. J Chromatogr A 2010; 1217:22-33. [DOI: 10.1016/j.chroma.2009.09.041] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Revised: 09/11/2009] [Accepted: 09/17/2009] [Indexed: 10/20/2022]
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33
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Lin Z, Yang F, He X, Zhao X, Zhang Y. Preparation and evaluation of a macroporous molecularly imprinted hybrid silica monolithic column for recognition of proteins by high performance liquid chromatography. J Chromatogr A 2009; 1216:8612-22. [DOI: 10.1016/j.chroma.2009.10.025] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2009] [Revised: 10/02/2009] [Accepted: 10/07/2009] [Indexed: 10/20/2022]
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34
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Gibson GTT, Marecak DM, Oleschuk RD. Reversed phase capillary HPLC using polymer-entrapped C18 particles. J Sep Sci 2009; 32:4025-32. [DOI: 10.1002/jssc.200900447] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Greiderer A, Ligon SC, Huck CW, Bonn GK. Monolithic poly(1,2-bis(p-vinylphenyl)ethane) capillary columns for simultaneous separation of low- and high-molecular-weight compounds. J Sep Sci 2009; 32:2510-20. [PMID: 19598164 DOI: 10.1002/jssc.200900211] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Monolithic poly(1,2-bis(p-vinylphenyl)ethane (BVPE)) capillary columns were prepared by thermally initiated free radical polymerisation of 1,2-bis(p-vinylphenyl)ethane in the presence of inert diluents (porogens) and alpha,alpha'-azoisobutyronitrile (AIBN) as initiator. Polymerisations were accomplished in 200 microm ID fused silica capillaries at 65 degrees C and for 60 min. Mercury intrusion porosimetry measurements of the polymeric RP support showed a broad bimodal pore-size-distribution of mesopores and small macropores in the range of 5-400 nm and flow-channels in the mum range. N(2)-adsorption (BET) analysis resulted in a tremendous enhancement of surface area (101 m(2)/g) of BVPE stationary phases compared to typical organic monoliths (approximately 20 m(2)/g), indicating the presence of a considerable amount of mesopores. Consequently, the adequate proportion of both meso- and (small) macropores allowed the rapid and high-resolution separation of low-molecular-weight compounds as well as biomolecules on the same monolithic support. At the same time, the high fraction of flow-channels provided enhanced column permeability. The chromatographic performance of poly(1,2-bis(p-vinylphenyl)ethane) capillary columns for the separation of biomolecules (proteins, oligonucleotides) and small molecules (alkyl benzenes, phenols, phenons) are demonstrated in this article. Additionally, pressure drop versus flow rate measurements of novel poly(1,2-bis(p-vinylphenyl)ethane) capillary columns confirmed high mechanical robustness, low swelling in organic solvents and high permeability. Due to the simplicity of monolith fabrication, comprehensive studies of the retention and separation behaviour of monolithic BVPE columns resulted in high run-to-run and batch-to-batch reproducibilities. All these attributes prove the excellent applicability of monolithic poly(1,2-bis(p-vinylphenyl)ethane) capillary columns for micro-HPLC towards a huge range of analytes of different chemistries and molecular sizes.
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Affiliation(s)
- Andreas Greiderer
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, 6020 Innsbruck, Austria
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36
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Svec F. CEC: selected developments that caught my eye since the year 2000. Electrophoresis 2009; 30 Suppl 1:S68-82. [PMID: 19517503 DOI: 10.1002/elps.200900062] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
During the last decade, a number of new developments have emerged in the field of CEC. This paper focuses only on monolithic columns prepared from synthetic polymers. Monolithic columns have become a well-established format of stationary phases for CEC immediately after their inception in the mid-1990s. They are readily prepared in situ from liquid precursors. Also, the control over both porous properties and surface chemistries is easy to achieve. These advantages make the monolithic separation media an attractive alternative to capillary columns packed with particulate materials. Since the number of papers concerned with just this single topic of polymer-based monolithic CEC columns is large, this overview describes only those approaches this author found interesting.
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Affiliation(s)
- Frantisek Svec
- The Molecular Foundry, E. O. Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8197, USA.
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37
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Preparation and evaluation of a neutral methacrylate-based monolithic column for hydrophilic interaction stationary phase by pressurized capillary electrochromatography. J Chromatogr A 2009; 1216:4611-7. [DOI: 10.1016/j.chroma.2009.03.057] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2008] [Revised: 01/05/2009] [Accepted: 03/20/2009] [Indexed: 11/20/2022]
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38
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Wang F, Dong J, Ye M, Wu R, Zou H. Improvement of proteome coverage using hydrophobic monolithic columns in shotgun proteome analysis. J Chromatogr A 2009; 1216:3887-94. [DOI: 10.1016/j.chroma.2009.02.082] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Revised: 02/20/2009] [Accepted: 02/26/2009] [Indexed: 01/21/2023]
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39
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Different alkyl dimethacrylate mediated stearyl methacrylate monoliths for improving separation efficiency of typical alkylbenzenes and proteins. J Chromatogr A 2009; 1216:3098-106. [DOI: 10.1016/j.chroma.2009.01.089] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Revised: 01/22/2009] [Accepted: 01/26/2009] [Indexed: 11/23/2022]
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40
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Aoki H, Tanaka N, Kubo T, Hosoya K. Polymer-based monolithic columns in capillary format tailored by using controlledin situpolymerization. J Sep Sci 2009; 32:341-58. [DOI: 10.1002/jssc.200800508] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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Huang G, Lian Q, Zeng W, Xie Z. Preparation and evaluation of a lysine-bonded silica monolith as polar stationary phase for hydrophilic interaction pressurized capillary electrochromatography. Electrophoresis 2008; 29:3896-904. [PMID: 18850658 DOI: 10.1002/elps.200700949] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A silica-based monolith as polar stationary phase was described for hydrophilic interaction pressurized capillary electrochromatography (HI-pCEC). The polar monolithic column was prepared by on-column reaction of lysine with epoxy groups on a gamma-glycidoxypropyltrimethosysilane-modified silica monolith. The stationary phase yielded strong hydrophilic interaction due to the slightly polar hydroxyl groups, and the strong polar lysine ligand with amino groups and carboxylic groups contained on the surface of the monolith. In order to evaluate the hydrophilic character of lysine ligand, the chromatographic behaviors of epoxy monolith (before lysine bonded) and diol monolith (hydroxyl groups contained) were also investigated. Two groups of comparative experiment were developed in terms of the separation of typical neutral non-polar and polar compounds performed in a mobile phase of aqueous-acetonitrile solution. Results showed that the lysine monolith was much more hydrophilic than the diol monolith, which presented less hydrophobic than the epoxy monolith. For further study on its hydrophilic character, the lysine monolith was demonstrated in the HI-pCEC mode for the separations of various polar compounds such as phenols, nucleic acid bases and nucleosides.
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Affiliation(s)
- Guihua Huang
- Department of Chemistry, Fuzhou University, Fuzhou, P. R. China
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42
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Urban J, Jandera P. Polymethacrylate monolithic columns for capillary liquid chromatography. J Sep Sci 2008; 31:2521-40. [DOI: 10.1002/jssc.200800182] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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43
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Otieno AC, Mwongela SM. Capillary electrophoresis-based methods for the determination of lipids--a review. Anal Chim Acta 2008; 624:163-74. [PMID: 18706322 DOI: 10.1016/j.aca.2008.06.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2008] [Revised: 06/12/2008] [Accepted: 06/17/2008] [Indexed: 01/08/2023]
Abstract
Capillary electrophoresis (CE) is a high-resolution technique for the separation of complex biological and chemical mixtures. CE continues to emerge as a powerful tool in the determination of lipids. Here we review the analytical potential of CE for the determination of a wide range of lipids. The different classes of lipids are introduced, and the different modes of CE and optimization methods for the separation of lipids are described. The advantages and disadvantages of the different modes of CE compared to traditional methods like gas chromatography (GC) and liquid chromatography (LC) in the determination of lipids are discussed. Finally, the potential of CE in the determination of lipids in the future is illustrated.
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Affiliation(s)
- Anthony C Otieno
- Department of Chemistry, Kent State University, Kent, OH 44242, USA
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44
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Wang X, Lü H, Lin X, Xie Z. Electrochromatographic characterization of methacrylate-based monolith with mixed mode of hydrophilic and weak electrostatic interactions by pressurized capillary electrochromatography. J Chromatogr A 2008; 1190:365-71. [DOI: 10.1016/j.chroma.2008.02.106] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2007] [Revised: 02/21/2008] [Accepted: 02/29/2008] [Indexed: 11/24/2022]
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45
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Lin X, Wang J, Li L, Wang X, Lü H, Xie Z. Separation and determination of five major opium alkaloids with mixed mode of hydrophilic/cation-exchange monolith by pressurized capillary electrochromatography. J Sep Sci 2007; 30:3011-7. [DOI: 10.1002/jssc.200700329] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Barceló-Barrachina E, Moyano E, Puignou L, Galceran MT. CEC separation of heterocyclic amines using methacrylate monolithic columns. Electrophoresis 2007; 28:1704-13. [PMID: 17465421 DOI: 10.1002/elps.200600356] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Two methacrylate-based monolithic columns, one with a negatively charged group (sulfonic group) and another with a new monomer N,N-dimethylamino ethyl acrylate (DMAEA), were prepared and tested for the separation of basic compounds by CEC. This new monolithic stationary phase was prepared by the in situ polymerization of DMAEA with butyl methacrylate and ethylene dimethacrylate, using a ternary porogenic solvent consisting of water, 1-propanol and 1,4-butanediol. The performance of this column was evaluated by means of the analysis of a family of heterocyclic amines. Separation conditions such as pH, amount of organic modifier, ionic strength and elution mode (normal or counterdirectional flow) were studied. At the optimal running electrolyte composition, and using the counterdirectional mode, symmetrical electrochromatographic peaks were obtained, with the number of theoretical plates up to 30,000 and a good resolution between closely related peaks. The 2-acrylamido-2-methyl-1-propane-sulfonic acid column was used for CEC-MS, taking advantage of the compatibility of its elution mode (normal flow) with the MS coupling.
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47
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Guerrouache M, Carbonnier B, Vidal-Madjar C, Millot MC. In situ functionalization of N-acryloxysuccinimide-based monolith for reversed-phase electrochromatography. J Chromatogr A 2007; 1149:368-76. [PMID: 17416383 DOI: 10.1016/j.chroma.2007.03.039] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2007] [Revised: 02/23/2007] [Accepted: 03/05/2007] [Indexed: 11/22/2022]
Abstract
Capillary electrochromatography (CEC) monolithic columns were prepared following a two-step synthetic pathway based on (i) UV-induced in situ radical polymerization of N-acryloxysuccinimide (NAS) and ethylene dimethacrylate (EDMA) and (ii) in situ functionalization of the NAS-containing monolithic matrix with various alkylamines. The first synthetic step was performed using toluene as a porogenic solvent. The successful grafting of the alkylamines onto the reactive matrix was confirmed on the basis of qualitative analysis of Raman spectra recorded before and after the chemical modification step. All the electrochromatographic results indicate a strong dependence of the retention, efficiency and selectivity of the monolithic columns on small variations of mobile phase composition and nature of the grafted aliphatic selector in agreement with the typical reversed-phase behaviour. Van Deemter plots for a series of alkylbenzene homologues injected on a column bearing hexyl-segments as side chains are also presented.
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Affiliation(s)
- Mohamed Guerrouache
- Laboratoire de Recherche sur les Polymères, CNRS-Université Paris 12, 2 rue Henri Dunant, 94320 Thiais, France
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48
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Guo H, Wang L, Bi K, Sun Y. Determination of Troxerutin in Troxerutin Tablets by Monolithic Capillary Electrochromatography. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-200048880] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Huaizhong Guo
- a School of Pharmacy , Shenyang Pharmaceutical University , Shenyang, P.R. China
| | - Linling Wang
- a School of Pharmacy , Shenyang Pharmaceutical University , Shenyang, P.R. China
| | - Kaishun Bi
- a School of Pharmacy , Shenyang Pharmaceutical University , Shenyang, P.R. China
| | - Yuqing Sun
- a School of Pharmacy , Shenyang Pharmaceutical University , Shenyang, P.R. China
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Yan WY, Zhang ZC, Gao RY, Yan C, Wang QS. SHORT, HIGHLY CROSS-LINKED, POLYMER BASED, MONOLITHIC COLUMN FOR CAPILLARY ELECTROCHROMATOGRAPHY. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-120015885] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Szumski M, Kłodzińska E, Jarmalaviciene R, Maruska A, Buszewski B. Considerations on influence of charge distribution on determination of biomolecules and microorganisms and tailoring the monolithic (continuous bed) materials for bioseparations. ACTA ACUST UNITED AC 2007; 70:107-15. [PMID: 17137631 DOI: 10.1016/j.jbbm.2006.09.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2006] [Revised: 09/26/2006] [Accepted: 09/26/2006] [Indexed: 11/24/2022]
Abstract
The importance of continuous beds (monoliths) as separation materials is connected with their better chromatographic properties and easier preparation in comparison to particulate-packed columns. Moreover the tuning of porosity as well as surface chemistry can lead to obtaining of highly selective materials, especially useful in separation of biologically important compounds or even microorganisms. To obtain high selectivity for such analytes as e.g. proteins, it is often important to have a knowledge about their shape, size, charge and finally charge distribution. This article presents our considerations on the charge distribution on the monolithic stationary phase and surface of such species as proteins or microorganisms as well as its eventual influence on the separation or sample preparation processes and tuning of their selectivity.
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Affiliation(s)
- Michał Szumski
- Department of Environmental Chemistry and Ecoanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, PL-87-100 Toruń, Poland
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