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Medina DAV, Cardoso AT, Borsatto JVB, Lanças FM. Open tubular liquid chromatography: Recent advances and future trends. J Sep Sci 2023; 46:e2300373. [PMID: 37582640 DOI: 10.1002/jssc.202300373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/17/2023]
Abstract
Nano-liquid chromatography (nanoLC) is gaining significant attention as a primary analytical technique across various scientific domains. Unlike conventional high-performance LC, nanoLC utilizes columns with inner diameters (i.ds.) usually ranging from 10 to 150 μm and operates at mobile phase flow rates between 10 and 1000 nl/min, offering improved chromatographic performance and detectability. Currently, most exploration of nanoLC has focused on particle-packed columns. Although open tubular LC (OTLC) can provide superior performance, optimized OTLC columns require very narrow i.ds. (< 10 μm) and demand challenging instrumentation. At the moment, these challenges have limited the success of OTLC. Nevertheless, remarkable progress has been made in developing and utilizing OTLC systems featuring narrow columns (< 2 μm). Additionally, significant efforts have been made to explore larger columns (10-75 μm i.d), demonstrating practical applicability in many situations. Due to their perceived advantages, interest in OTLC has resurged in the last two decades. This review provides an updated outlook on the latest developments in OTLC, focusing on instrumental challenges, achievements, and advancements in column technology. Moreover, it outlines selected applications that illustrate the potential of OTLC for performing targeted and untargeted studies.
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Affiliation(s)
- Deyber Arley Vargas Medina
- Departamento de Química e Física Molecular, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo, Brazil
| | - Alessandra Timoteo Cardoso
- Departamento de Química e Física Molecular, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo, Brazil
| | - João Victor Basolli Borsatto
- Departamento de Química e Física Molecular, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo, Brazil
| | - Fernando Mauro Lanças
- Departamento de Química e Física Molecular, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo, Brazil
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2
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Ahmed MA, Ghiasvand A, Quirino JP. Dynamic in situ growth of bonded-phase silica nanospheres on silica capillary inner walls for open-tubular liquid chromatography. Anal Bioanal Chem 2023; 415:4923-4934. [PMID: 37351669 PMCID: PMC10386930 DOI: 10.1007/s00216-023-04798-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/24/2023]
Abstract
Silica nanospheres (SNS) were grown on the inner walls of silica capillaries through a dynamic in situ nucleation process to prepare a highly porous and large accessible surface area substrate. The SNS were then functionalized with octadecyl (C18), 3-aminopropyltriethoxysilane (APTES), beta-cyclodextrin (β-CD), and amino groups to develop robust and efficient chromatographic stationary phases. The modified silica capillaries were exploited for open-tubular liquid chromatography (OT-LC) and open-tubular capillary electrochromatography (OT-CEC) applications. The prepared stationary phases were compared to conventional capillaries in terms of separation performance. The synthesis process was optimized, and the bonded-phase stationary phases were characterized by the electron microscopy technique. The effects of different solvents, additives, and functional groups on the geometry and chromatographic resolving power of the SNS were envisaged. The capillaries modified with octadecyl groups were evaluated for the separation of non-steroidal anti-inflammatory drugs, phenones, alkenylbenzenes, and enantiomers of chlorophenoxy herbicides. As an application instance, an SNS-C18-coated capillary was utilized for the separation of alkenylbenzenes from clove extract and protein digest medium, through OT-LC and OT-CEC techniques, respectively. The β-CD functionalized capillary was applied for the OT-CEC separation of a dichlorprop racemic mixture.
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Affiliation(s)
- Mohamed Adel Ahmed
- Australian Centre for Research On Separation Science (ACROSS), School of Natural Sciences, University of Tasmania, Hobart, TAS, 7001, Australia
| | - Alireza Ghiasvand
- Australian Centre for Research On Separation Science (ACROSS), School of Natural Sciences, University of Tasmania, Hobart, TAS, 7001, Australia.
- Department of Analytical Chemistry, Lorestan University, Khoramabad, Iran.
| | - Joselito P Quirino
- Australian Centre for Research On Separation Science (ACROSS), School of Natural Sciences, University of Tasmania, Hobart, TAS, 7001, Australia.
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Huygens B, Parmentier F, Desmet G. Exact analytical expressions for the band broadening in polydisperse 2-D multi-capillary columns with diffusional bridging. J Chromatogr A 2021; 1659:462632. [PMID: 34731756 DOI: 10.1016/j.chroma.2021.462632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/15/2021] [Accepted: 10/16/2021] [Indexed: 10/20/2022]
Abstract
Using a recent generalization of the Aris dispersion method, we have derived exact analytical expressions for the long-time limit dispersion in 2-D multi-capillary packings with diffusional bridging (binary channel system). Both the plug flow and the parabolic flow case are considered. The expressions are mathematically exact over the entire range of possible values of the degree of polydispersity (σ), the retention equilibrium constant K and the diffusion coefficients in the mobile and stationary zone. They are validated by comparing them to the dispersion data obtained by numerically solving the partial differential equation describing the general advection-diffusion mass balance. A correlation coefficient of R2 > 0.99995 is obtained. The form of the obtained analytical expression shows the dispersion arising from the polydispersity effect in multi-capillary systems can be split in two contributions, one related to the actual velocity difference between the adjacent channels and one related to the fact that the average of the intra-capillary C-term band broadening is larger in any σ≠0-case than in the σ=0-case. When leaving the small σ-assumption, a new factor ((1- σ2)/(1+3σ2)2) emerges, common to both the solution for the plug flow and the parabolic case. The analysis shows the parabolic flow not only leads to a larger intra-capillary dispersion (σ=0) than the plug flow case as known from literature but is also more sensitive to the polydispersity effect (up to some 10 to 20%).
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Affiliation(s)
- Bram Huygens
- Department of Chemical Engineering, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | | | - Gert Desmet
- Department of Chemical Engineering, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
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Ahmed MA, Felisilda BM, Wuethrich A, Quirino JP. A stationary pseudophase semi-permanent coating for open-tubular capillary liquid chromatography and electrochromatography. J Chromatogr A 2021; 1657:462553. [PMID: 34564029 DOI: 10.1016/j.chroma.2021.462553] [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: 06/05/2021] [Revised: 09/09/2021] [Accepted: 09/09/2021] [Indexed: 11/28/2022]
Abstract
We describe the chromatographic and electrochromatographic separation of small neutral and charged analytes using a fused silica capillary with a stationary pseudophase semi-permanent coating of didodecyldimethyl ammonium bromide (DDAB) aggregates. The coating was prepared by flushing the capillary with a DDAB solution that was rinsed out with the mobile phase. Our studies (i.e., electroosmotic flow measurements by capillary electrophoresis, chromatographic retention of a neutral probe and atomic force microscopy) suggested the formation of DDAB patchy admicelle, complete admicelle, or larger aggregates at the solid surface - liquid interface inside the capillary, depending on the concentration of DDAB used in coating the capillary. The analytical figures of merit for open tubular liquid chromatography (OT-LC, pressure driven) and open tubular capillary electrochromatography (OT-CEC, voltage driven) using a capillary coated with 0.5 mM DDAB and mobile phase/background solution of 25 mM borate buffer at pH 9.5 with 10% MeOH were the following: LOD = 3.0-5.0 µg/mL (OT-LC) and 2.5-5.0 µg/mL (OT-CEC); linearity R2 > 0.99 (peak area (OT-LC) and corrected peak area (OT-CEC)), intraday and interday repeatability%RSD < 5% (n = 12) for retention/migration time, peak area (OT-LC) and corrected peak area (OT-CEC). The reversed-phase and anion-exchange property of the stationary pseudophase was studied by the addition of organic solvents and sodium chloride to the mobile phase, respectively. We also demonstrate the increase in the ks of the tested analytes by implementing successive multiple ionic layer (SMIL) coating strategies with DDAB in combination with a cationic and/or anionic polyelectrolyte. The use of a stationary pseudophase coating is potentially an easy alternative way to conduct open-tubular liquid chromatography and electrochromatography.
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Affiliation(s)
- Mohamed Adel Ahmed
- Australian Centre for Research on Separation Science (ACROSS), School of Natural Sciences-Chemistry, University of Tasmania, Hobart, TAS, Australia 7001
| | - Bren Mark Felisilda
- Australian Centre for Research on Separation Science (ACROSS), School of Natural Sciences-Chemistry, University of Tasmania, Hobart, TAS, Australia 7001
| | - Alain Wuethrich
- Australian Institute for Bioengineering and Biotechnology (AIBN), University of Queensland, Brisbane, Queensland, Australia
| | - Joselito P Quirino
- Australian Centre for Research on Separation Science (ACROSS), School of Natural Sciences-Chemistry, University of Tasmania, Hobart, TAS, Australia 7001.
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Sun G, Lu Y. A novel one-pot strategy of preparation of N-phenylacrylamide-styrene co-polymer open tubular capillary column for peptides separation. J Sep Sci 2020; 43:4461-4468. [PMID: 33107702 DOI: 10.1002/jssc.202000862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An open tubular capillary column (100 μm internal diameter and 120 cm length) was first fabricated with N-phenylacrylamide and styrene copolymer layer on the inner surface by in situ one-pot strategy, while ethylene dimethacrylate was used as the cross-linker. The pretreated silica-fused capillary was reacted with 3-trimethoxysilyl propyl methacrylate to attach a double-bond ligand onto the inner surface of the capillary. Further, a thick and stabile copolymer layer was generated on the inner surface of the capillary by the novel method in situ one-pot reaction of styrene-N-phenylacrylamide. The effects of reaction temperature and composition of the polymerization mixture on the morphology and permeability of the copolymer were investigated. The separation performance of the fabricated polymer columns were validated by separation of five synthetic peptides. The excellent efficiency (188 500 plates/m) of 100 μm internal diameter open tubular column with the separation media prepared by mixed one-pot copolymerization has not been achieved via the isocratic elution mode. The column to column, intraday, and interday repeatabilities evaluated from the relative standard deviation were found better than 4%, exhibiting considerable repeatability of the column.
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Affiliation(s)
- Genlin Sun
- Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, P. R. China
| | - Yao Lu
- Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, P. R. China
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6
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Open-tubular admicellar electrochromatography of charged analytes. Talanta 2020; 208:120401. [PMID: 31816751 DOI: 10.1016/j.talanta.2019.120401] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 11/23/2022]
Abstract
Fundamental studies on the separation of cationic and anionic analytes in open-tubular admicellar electrochromatography (OT-AMEC) using cetyltrimethylammonium bromide (CTAB) and fused silica capillaries are presented. OT-AMEC was compared with open-tubular admicellar liquid chromatography (OT-AMLC) by running the two methods using the same mobile phases. The mobile phases were buffered at pH ≥ 6 and contained a low concentration (above the critical surface aggregation concentration and below the critical micelle concentration) of CTAB. The stationary pseudophase of CTAB admicelles were formed at the solid surface and liquid interface inside the capillary by simply conditioning the capillary with the mobile phase. Separations were performed in a 30 cm (21.5 cm to UV detector) long and 50 μm inner diameter capillary, using low pressure (50 mbar) in OT-AMLC and high voltage (15 kV at negative polarity) in OT-AMEC. The appropriate equations for the experimental estimation of retention factor (k) values of analytes were discussed. For anionic analytes, k in OT-AMEC were carefully determined by considering the observed interaction between CTAB monomers and tested analytes. The calculated k for each analyte was found similar in OT-AMLC and OT-AMEC, although the mechanism of retention was not entirely different due to the contribution of electrophoresis in OT-AMEC. Studies on the addition of a typical (i.e., acetonitrile) and atypical modifier (i.e., nonyl-β-glucoside) into the mobile phase, and sample focusing with >10x improvement in peak height under isocratic conditions were also conducted.
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7
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Mejía-Carmona K, Soares da Silva Burato J, Borsatto JVB, de Toffoli AL, Lanças FM. Miniaturization of liquid chromatography coupled to mass spectrometry. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115735] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ahmed MA, Felisilda BMB, Quirino JP. Recent advancements in open-tubular liquid chromatography and capillary electrochromatography during 2014-2018. Anal Chim Acta 2019; 1088:20-34. [PMID: 31623713 DOI: 10.1016/j.aca.2019.08.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/28/2019] [Accepted: 08/07/2019] [Indexed: 12/20/2022]
Abstract
This review critically discusses the developments on open-tubular liquid chromatography (OT-LC) and open-tubular capillary electrochromatography (OT-CEC) during 2014-2018. An appropriate Scopus search revealed 5 reviews, 4 theoretical papers on open-tubular format chromatography, 29 OT-LC articles, 68 OT-CEC articles and 4 OT-LC/OT-CEC articles, indicating a sustained interest in these areas. The open-tubular format typically uses a capillary column with inner walls that are coated with an ample layer or coating of solid stationary phase material. The ratio between the capillary internal diameter and coating thickness (CID/CT) is ideally ≤ 100 for appropriate chromatographic retention. We, therefore, approximated the CID/CT ratios and found that 22 OT-LC papers have CID/CT ratios ≤100. The other 7 OT-LC papers have CID/CT ratio >100 but have clearly demonstrated chromatographic retention. These 29 papers utilised reversed phase or ion exchange mechanisms using known or innovative solid stationary phase materials (e.g. metal organic frameworks), stationary pseudophases from ionic surfactants or porous supports. On the other hand, we found that 68 OT-CEC papers, 7 OT-LC papers and 4 OT-LC & OT-CEC papers have CID/CT ratios >100. Notably, 44 papers (42 OT-CEC and 2 OT-LC & OT-CEC) did not report the retention factor and/or effective electrophoretic mobility of analytes. Considering all covered papers, the most popular activity was on the development of new chromatographic materials as coatings. However, we encourage OT-CEC researchers to not only characterise changes in the electroosmotic flow but also verify the interaction of the analytes with the coating. In addition, the articles reported were largely driven by stationary phase or support development and not by practical applications.
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Affiliation(s)
- Mohamed Adel Ahmed
- Australian Centre for Research on Separation Science (ACROSS), School of Natural Sciences, Chemistry, University of Tasmania, Hobart, 7001, Australia
| | - Bren Mark B Felisilda
- Australian Centre for Research on Separation Science (ACROSS), School of Natural Sciences, Chemistry, University of Tasmania, Hobart, 7001, Australia
| | - Joselito P Quirino
- Australian Centre for Research on Separation Science (ACROSS), School of Natural Sciences, Chemistry, University of Tasmania, Hobart, 7001, Australia.
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9
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Futagami S, Hara T, Ottevaere H, Terryn H, Baron GV, Desmet G, De Malsche W. Chromatographic study of the structural properties of mesoporous silica layers deposited on radially elongated pillars. J Chromatogr A 2019; 1595:58-65. [DOI: 10.1016/j.chroma.2019.02.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 02/12/2019] [Accepted: 02/14/2019] [Indexed: 01/16/2023]
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10
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Lam SC, Sanz Rodriguez E, Haddad PR, Paull B. Recent advances in open tubular capillary liquid chromatography. Analyst 2019; 144:3464-3482. [DOI: 10.1039/c9an00329k] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review covers advances and applications of open tubular capillary liquid chromatography (OT-LC) over the period 2007–2018.
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Affiliation(s)
- Shing Chung Lam
- ASTech
- ARC Training Centre for Portable Analytical Separation Technologies (ASTech)
- and Australian Centre for Research on Separation Science (ACROSS)
- School of Natural Sciences
- University of Tasmania
| | - Estrella Sanz Rodriguez
- ASTech
- ARC Training Centre for Portable Analytical Separation Technologies (ASTech)
- and Australian Centre for Research on Separation Science (ACROSS)
- School of Natural Sciences
- University of Tasmania
| | - Paul R. Haddad
- ASTech
- ARC Training Centre for Portable Analytical Separation Technologies (ASTech)
- and Australian Centre for Research on Separation Science (ACROSS)
- School of Natural Sciences
- University of Tasmania
| | - Brett Paull
- ASTech
- ARC Training Centre for Portable Analytical Separation Technologies (ASTech)
- and Australian Centre for Research on Separation Science (ACROSS)
- School of Natural Sciences
- University of Tasmania
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Hara T, Izumi Y, Nakao M, Hata K, Baron GV, Bamba T, Desmet G. Silica-based hybrid porous layers to enhance the retention and efficiency of open tubular capillary columns with a 5 μm inner diameter. J Chromatogr A 2018; 1580:63-71. [DOI: 10.1016/j.chroma.2018.10.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 10/09/2018] [Accepted: 10/14/2018] [Indexed: 12/16/2022]
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12
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Rodriguez ES, Lam SC, Haddad PR, Paull B. Reversed-Phase Functionalised Multi-lumen Capillary as Combined Concentrator, Separation Column, and ESI Emitter in Capillary-LC–MS. Chromatographia 2018. [DOI: 10.1007/s10337-018-3629-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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13
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Dores-Sousa JL, De Vos J, Eeltink S. Resolving power in liquid chromatography: A trade-off between efficiency and analysis time. J Sep Sci 2018; 42:38-50. [DOI: 10.1002/jssc.201800891] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/13/2018] [Accepted: 09/13/2018] [Indexed: 01/28/2023]
Affiliation(s)
- José Luís Dores-Sousa
- Department of Chemical Engineering; Vrije Universiteit Brussel (VUB); Brussels Belgium
| | - Jelle De Vos
- Department of Chemical Engineering; Vrije Universiteit Brussel (VUB); Brussels Belgium
| | - Sebastiaan Eeltink
- Department of Chemical Engineering; Vrije Universiteit Brussel (VUB); Brussels Belgium
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14
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Hara T, Futagami S, De Malsche W, Baron GV, Desmet G. Exploring the effect of mesopore size reduction on the column performance of silica-based open tubular capillary columns. J Chromatogr A 2018; 1552:87-91. [DOI: 10.1016/j.chroma.2018.03.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/26/2018] [Accepted: 03/27/2018] [Indexed: 11/17/2022]
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15
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Ying LL, Wang DY, Yang HP, Deng XY, Peng C, Zheng C, Xu B, Dong LY, Wang X, Xu L, Zhang YW, Wang XH. Synthesis of boronate-decorated polyethyleneimine-grafted porous layer open tubular capillaries for enrichment of polyphenols in fruit juices. J Chromatogr A 2018; 1544:23-32. [DOI: 10.1016/j.chroma.2018.02.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 02/11/2018] [Accepted: 02/21/2018] [Indexed: 10/18/2022]
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16
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LI RN, WANG YN, PENG MH, WANG XY, GUO GS. Preparation and Application of Porous Layer Open Tubular Capillary Columns with Narrow Bore in Liquid Chromatography. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2017. [DOI: 10.1016/s1872-2040(17)61057-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Hara T, Futagami S, De Malsche W, Eeltink S, Terryn H, Baron GV, Desmet G. Chromatographic Properties of Minimal Aspect Ratio Monolithic Silica Columns. Anal Chem 2017; 89:10948-10956. [DOI: 10.1021/acs.analchem.7b02764] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Takeshi Hara
- Vrije Universiteit Brussel, Department of Chemical
Engineering, Pleinlaan
2, B-1050 Brussels, Belgium
- Division
of Metabolomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1
Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Shunta Futagami
- Vrije Universiteit Brussel, Department of Chemical
Engineering, Pleinlaan
2, B-1050 Brussels, Belgium
| | - Wim De Malsche
- Vrije Universiteit Brussel, Department of Chemical
Engineering, Pleinlaan
2, B-1050 Brussels, Belgium
| | - Sebastiaan Eeltink
- Vrije Universiteit Brussel, Department of Chemical
Engineering, Pleinlaan
2, B-1050 Brussels, Belgium
| | - Herman Terryn
- Vrije Universiteit Brussel, Department of Materials
and Chemistry, Pleinlaan
2, B-1050 Brussels, Belgium
| | - Gino V. Baron
- Vrije Universiteit Brussel, Department of Chemical
Engineering, Pleinlaan
2, B-1050 Brussels, Belgium
| | - Gert Desmet
- Vrije Universiteit Brussel, Department of Chemical
Engineering, Pleinlaan
2, B-1050 Brussels, Belgium
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An automated and self-cleaning nano liquid chromatography mass spectrometry platform featuring an open tubular multi-hole crystal fiber solid phase extraction column and an open tubular separation column. J Chromatogr A 2017; 1518:104-110. [DOI: 10.1016/j.chroma.2017.08.071] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 08/21/2017] [Accepted: 08/24/2017] [Indexed: 11/24/2022]
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19
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Preparation of open tubular capillary columns by in situ ring-opening polymerization and their applications in cLC-MS/MS analysis of tryptic digest. Anal Chim Acta 2017; 979:58-65. [DOI: 10.1016/j.aca.2017.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 04/30/2017] [Accepted: 05/06/2017] [Indexed: 11/23/2022]
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20
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Blue LE, Franklin EG, Godinho JM, Grinias JP, Grinias KM, Lunn DB, Moore SM. Recent advances in capillary ultrahigh pressure liquid chromatography. J Chromatogr A 2017; 1523:17-39. [PMID: 28599863 DOI: 10.1016/j.chroma.2017.05.039] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/12/2017] [Accepted: 05/15/2017] [Indexed: 11/28/2022]
Abstract
In the twenty years since its initial demonstration, capillary ultrahigh pressure liquid chromatography (UHPLC) has proven to be one of most powerful separation techniques for the analysis of complex mixtures. This review focuses on the most recent advances made since 2010 towards increasing the performance of such separations. Improvements in capillary column preparation techniques that have led to columns with unprecedented performance are described. New stationary phases and phase supports that have been reported over the past decade are detailed, with a focus on their use in capillary formats. A discussion on the instrument developments that have been required to ensure that extra-column effects do not diminish the intrinsic efficiency of these columns during analysis is also included. Finally, the impact of these capillary UHPLC topics on the field of proteomics and ways in which capillary UHPLC may continue to be applied to the separation of complex samples are addressed.
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Affiliation(s)
- Laura E Blue
- Process Development, Amgen Inc., Thousand Oaks, CA 91320, USA
| | - Edward G Franklin
- HPLC Research & Development, Restek Corp., Bellefonte, PA 16823, USA
| | - Justin M Godinho
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - James P Grinias
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, NJ 08028, USA.
| | - Kaitlin M Grinias
- Department of Product Development & Supply, GlaxoSmithKline, King of Prussia, PA 19406, USA
| | - Daniel B Lunn
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Hara T, Futagami S, Eeltink S, De Malsche W, Baron GV, Desmet G. Very High Efficiency Porous Silica Layer Open-Tubular Capillary Columns Produced via in-Column Sol-Gel Processing. Anal Chem 2016; 88:10158-10166. [PMID: 27642813 DOI: 10.1021/acs.analchem.6b02713] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
It is demonstrated that 5 μm i.d. capillaries can be coated with mesoporous silica layers up to 550 nm thickness. All the columns produced using in-column sol-gel synthesis with tetramethoxysilane provide plate height curves that closely follow the Golay-Aris theory. In 60 cm long columns, efficiencies as high as N = 150 000 and N = 120 000 were obtained, respectively, for a 300 and 550 nm thick porous layer. An excellent retention and plate height reproducibility was obtained when the recipes were subsequently applied to produce very long (1.9 and 2.5 m) capillaries. These columns produced efficiencies up to N = 600 000 plates for a retained and around N = 1 000 000 plates for an unretained component. Given the good reproducibility on the long capillaries, and considering that mesoporous silica is still the preferred support for LC, it is believed the present study could spur a renewed interest in open-tubular LC.
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Affiliation(s)
- Takeshi Hara
- Department of Chemical Engineering, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium
| | - Shunta Futagami
- Department of Chemical Engineering, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium
| | - Sebastiaan Eeltink
- Department of Chemical Engineering, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium
| | - Wim De Malsche
- Department of Chemical Engineering, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium
| | - Gino V Baron
- Department of Chemical Engineering, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium
| | - Gert Desmet
- Department of Chemical Engineering, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium
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22
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Peng L, Zhu M, Zhang L, Liu H, Zhang W. Preparation and evaluation of 3 m open tubular capillary columns with a zwitterionic polymeric porous layer for liquid chromatography. J Sep Sci 2016; 39:3736-3744. [DOI: 10.1002/jssc.201600535] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/29/2016] [Accepted: 08/01/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Li Peng
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai P. R. China
| | - Manman Zhu
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai P. R. China
| | - Lingyi Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai P. R. China
| | - Haiyan Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai P. R. China
| | - Weibing Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai P. R. China
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23
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Preparation and characterization of micro-cell membrane chromatographic column with silica-based porous layer open tubular capillary as cellular membrane carrier. Anal Bioanal Chem 2016; 408:2441-8. [DOI: 10.1007/s00216-016-9339-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/08/2016] [Accepted: 01/14/2016] [Indexed: 10/22/2022]
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24
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Tanaka N, McCalley DV. Core–Shell, Ultrasmall Particles, Monoliths, and Other Support Materials in High-Performance Liquid Chromatography. Anal Chem 2015; 88:279-98. [DOI: 10.1021/acs.analchem.5b04093] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - David V. McCalley
- Centre for Research in Biosciences, University of the West of England, Frenchay, Bristol BS16 1QY, U.K
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