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Silica Hydride: A Separation Material Every Analyst Should Know About. Molecules 2021; 26:molecules26247505. [PMID: 34946587 PMCID: PMC8708426 DOI: 10.3390/molecules26247505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 11/17/2022] Open
Abstract
This review describes the development, special features and applications of silica hydride-based stationary phases for HPLC. The unique surface of this material is in contrast to ordinary, standard silica, which is the material most frequently used in modern HPLC stationary phases. The standard silica surface contains mainly silanol (Si-OH) groups, while the silica hydride surface is instead composed of silicon-hydrogen groups, which is much more stable, less reactive and delivers different chromatographic and chemical characteristics. Other aspects of this material are described for each of the different bonded moieties available commercially. Some applications for each of these column types are also presented as well as a generic model for method development on silica hydride-based stationary phases.
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2
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Stammers M, Ivanova IM, Niewczas IS, Segonds-Pichon A, Streeter M, Spiegel DA, Clark J. Age-related changes in the physical properties, cross-linking, and glycation of collagen from mouse tail tendon. J Biol Chem 2020; 295:10562-10571. [PMID: 32381510 PMCID: PMC7397091 DOI: 10.1074/jbc.ra119.011031] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 05/04/2020] [Indexed: 12/18/2022] Open
Abstract
Collagen is a structural protein whose internal cross-linking critically determines the properties and functions of connective tissue. Knowing how the cross-linking of collagen changes with age is key to understanding why the mechanical properties of tissues change over a lifetime. The current scientific consensus is that collagen cross-linking increases with age and that this increase leads to tendon stiffening. Here, we show that this view should be reconsidered. Using MS-based analyses, we demonstrated that during aging of healthy C57BL/6 mice, the overall levels of collagen cross-linking in tail tendon decreased with age. However, the levels of lysine glycation in collagen, which is not considered a cross-link, increased dramatically with age. We found that in 16-week-old diabetic db/db mice, glycation reaches levels similar to those observed in 98-week-old C57BL/6 mice, while the other cross-links typical of tendon collagen either decreased or remained the same as those observed in 20-week-old WT mice. These results, combined with findings from mechanical testing of tendons from these mice, indicate that overall collagen cross-linking in mouse tendon decreases with age. Our findings also reveal that lysine glycation appears to be an important factor that contributes to tendon stiffening with age and in diabetes.
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Affiliation(s)
| | - Irina M Ivanova
- Babraham Institute, Cambridge, United Kingdom
- John Innes Centre, Norwich, United Kingdom
| | | | | | - Matthew Streeter
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - David A Spiegel
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
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3
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Bansode S, Bashtanova U, Li R, Clark J, Müller KH, Puszkarska A, Goldberga I, Chetwood HH, Reid DG, Colwell LJ, Skepper JN, Shanahan CM, Schitter G, Mesquida P, Duer MJ. Glycation changes molecular organization and charge distribution in type I collagen fibrils. Sci Rep 2020; 10:3397. [PMID: 32099005 PMCID: PMC7042214 DOI: 10.1038/s41598-020-60250-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 01/27/2020] [Indexed: 02/06/2023] Open
Abstract
Collagen fibrils are central to the molecular organization of the extracellular matrix (ECM) and to defining the cellular microenvironment. Glycation of collagen fibrils is known to impact on cell adhesion and migration in the context of cancer and in model studies, glycation of collagen molecules has been shown to affect the binding of other ECM components to collagen. Here we use TEM to show that ribose-5-phosphate (R5P) glycation of collagen fibrils - potentially important in the microenvironment of actively dividing cells, such as cancer cells - disrupts the longitudinal ordering of the molecules in collagen fibrils and, using KFM and FLiM, that R5P-glycated collagen fibrils have a more negative surface charge than unglycated fibrils. Altered molecular arrangement can be expected to impact on the accessibility of cell adhesion sites and altered fibril surface charge on the integrity of the extracellular matrix structure surrounding glycated collagen fibrils. Both effects are highly relevant for cell adhesion and migration within the tumour microenvironment.
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Affiliation(s)
- Sneha Bansode
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Uliana Bashtanova
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Rui Li
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | | | - Karin H Müller
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
- Cambridge Advanced Imaging Centre, Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY, UK
| | - Anna Puszkarska
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Ieva Goldberga
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Holly H Chetwood
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - David G Reid
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Lucy J Colwell
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Jeremy N Skepper
- Cambridge Advanced Imaging Centre, Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY, UK
| | - Catherine M Shanahan
- BHF Centre of Research Excellence, Cardiovascular Division, James Black Centre King's College London, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Georg Schitter
- Automation and Control Institute (ACIN), TU Wien, Gusshausstrasse 27-29, A-1040, Vienna, Austria
| | - Patrick Mesquida
- Automation and Control Institute (ACIN), TU Wien, Gusshausstrasse 27-29, A-1040, Vienna, Austria.
- Department of Physics, King's College London, Strand, London, WC2R 2LS, UK.
| | - Melinda J Duer
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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Ikegami T. Hydrophilic interaction chromatography for the analysis of biopharmaceutical drugs and therapeutic peptides: A review based on the separation characteristics of the hydrophilic interaction chromatography phases. J Sep Sci 2019; 42:130-213. [DOI: 10.1002/jssc.201801074] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 11/17/2018] [Accepted: 11/18/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Tohru Ikegami
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Kyoto Japan
- Institute of Pharmaceutical Sciences; Pharmaceutical (Bio-) Analysis; Eberhard-Karls Universität Tübingen; Tübingen Germany
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5
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Wang S, Wang X, Li C, Xu X, Wei Z, Wang Z, Qu R. Photodegradation of 17β-estradiol on silica gel and natural soil by UV treatment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 242:1236-1244. [PMID: 30118911 DOI: 10.1016/j.envpol.2018.08.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/31/2018] [Accepted: 08/05/2018] [Indexed: 06/08/2023]
Abstract
This paper evaluates the UV photodegradation of 17β-estradiol (E2) on silica gel and in natural soil with different soil components. Silica gel was chosen as a stable and pure support to simulate the photochemical behavior of E2 on the surface of natural soil. Ultraviolet light, rather than visible light, was confirmed to play a decisive role in the photodegradation of E2 on silica gel. The effect of three soil components, including humic acid (HA), inorganic salts, and relative humidity (RH), on the photochemical behavior of E2 on silica gel or soil under UV irradiation was then evaluated. Two HA concentrations (10 and 20 mg g-1) and three salts (ferric sulfate, copper sulfate and sodium carbonate) were observed to obviously inhibit the degradation of E2 on silica gel. Interestingly, nitrate was found to obviously improve the removal efficiency of E2. Both too-dry and too-wet conditions obviously reduced the removal rate of E2, and the optimum relative humidity (RH) value was found to be approximately about 35% (30 °C). Furthermore, twenty intermediate products and two major pathways were proposed to describe the transformation processes of E2 treated by UV irradiation, among which oligomers were found to be the major intermediate products before complete mineralization. The efficient UV removal of E2 on silica gel and natural soil suggested a feasible strategy to remediate E2 contaminated soil.
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Affiliation(s)
- Siyuan Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Xinghao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Chenguang Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Xinxin Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Zhongbo Wei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Zunyao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Ruijuan Qu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China.
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Creydt M, Fischer M. Plant Metabolomics: Maximizing Metabolome Coverage by Optimizing Mobile Phase Additives for Nontargeted Mass Spectrometry in Positive and Negative Electrospray Ionization Mode. Anal Chem 2017; 89:10474-10486. [PMID: 28850216 DOI: 10.1021/acs.analchem.7b02592] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Nontargeted screening methods with ultrahigh-performance liquid chromatography-electrospray ionization/quadrupole-time-of-flight mass spectrometry have been extensively applied to plant metabolomics to very diverse scientific issues in plant metabolomics. In this study, different mobile phase additives were tested in order to improve the electrospray ionization process and to detect as many metabolites as possible with high peak intensities in positive and negative ionization mode. Influences of modifiers were examined for nonpolar and polar compounds, as optimal conditions are not always the same. By combining different additives, metabolite coverage could be significantly increased. The best results for polar metabolites in positive ionization mode were achieved by using 0.1% acetic acid and 0.1% formic acid in negative ionization mode. For measurements of nonpolar metabolites in positive ionization mode, the application of 10 mmol/L ammonium formate led to the best findings, while the use of 0.02% acetic acid was more appropriate in negative ionization mode.
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Affiliation(s)
- Marina Creydt
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany
| | - Markus Fischer
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany
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Appulage DK, Schug KA. Silica hydride based phases for small molecule separations using automated liquid chromatography–mass spectrometry method development. J Chromatogr A 2017; 1507:115-123. [DOI: 10.1016/j.chroma.2017.05.073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 05/15/2017] [Accepted: 05/31/2017] [Indexed: 11/25/2022]
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Wang C, Huang L, Lin Y, Li Y, Hou Y, Yang L, Sun M, He H. Functionalization of silica gel with 5-hydroxymethylfurfural: preparation, characterization and preliminary verification. NEW J CHEM 2017. [DOI: 10.1039/c6nj03815h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report the organic–inorganic hybrid composites comprising surficial-modified silica gel with 5-HMF as a solid phase for liquid chromatography.
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Affiliation(s)
- Cheng Wang
- School of Medicine
- Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
| | - Limin Huang
- School of Medicine
- Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
| | - Yuanyuan Lin
- School of Medicine
- Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
| | - Youjia Li
- The Second Affiliated Hospital of Xi'an Jiaotong University
- Xi’an 710004
- P. R. China
| | - Yajing Hou
- School of Medicine
- Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
| | - Liu Yang
- School of Medicine
- Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
| | - Meng Sun
- School of Medicine
- Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
| | - Huaizhen He
- School of Medicine
- Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
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Douša M, Pivoňková V, Sýkora D. Optimization ofo-phtaldialdehyde/2-mercaptoethanol postcolumn reaction for the hydrophilic interaction liquid chromatography determination of memantine utilizing a silica hydride stationary phase. J Sep Sci 2016; 39:3145-55. [DOI: 10.1002/jssc.201600489] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/18/2016] [Accepted: 06/20/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Michal Douša
- Zentiva, k.s. Praha; a Sanofi Company; Prague Czech Republic
| | - Veronika Pivoňková
- Department of Analytical Chemistry; University of Chemistry and Technology; Prague Czech Republic
| | - David Sýkora
- Department of Analytical Chemistry; University of Chemistry and Technology; Prague Czech Republic
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10
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Dołowy M, Pyka A. Validation of an RPHPTLC-Densitometric Method Using Silica Gel 60 RP18WF254 for Simultaneous Determination of Nicotinamide in Selected Pharmaceutical Formulations. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2015; 2015:631025. [PMID: 25834751 PMCID: PMC4365381 DOI: 10.1155/2015/631025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/13/2015] [Indexed: 06/04/2023]
Abstract
This research study describes the applicability of silica gel 60 RPW18F254 plates for the development and validation of new, simple, economic, accurate, and precise RPHPTLC-densitometric method suitable for the quantification of nicotinamide (as Vitamin PP) in three marketed preparations. The mobile phase used was methanol-water in volume composition 3 : 7. Detection wavelength was 200 nm. The proposed method was validated according to ICH guidelines and also based on Ferenczi-Fodor and Konieczka reports. Results were found to be linear over a range of 1.00 to 2.00 μg/spot. Limit of detection (LOD) and limit of quantification (LOQ) were 0.15 μg/spot and 0.45 μg/spot, respectively. The percent content of nicotinamide in the investigated preparations was found to be 99.2% (Product 1), 99.3% (Product 2), and 99.4% (Product 3). Developed method is accurate and precise (CV < 3%) and may be successfully applied for the quality control of pharmaceutical formulations containing nicotinamide in the presence of its derivatives, such as N,N-diethylnicotinamide, N-methylnicotinamide, and nicotinic acid.
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Affiliation(s)
- Małgorzata Dołowy
- Institute of Analytical Chemistry, Department of General and Analytical Chemistry, School of Pharmacy and the Division of Laboratory Medicine, Medical University of Silesia in Katowice, 4 Jagiellońska Street, 41-200 Sosnowiec, Poland
| | - Alina Pyka
- Institute of Analytical Chemistry, Department of General and Analytical Chemistry, School of Pharmacy and the Division of Laboratory Medicine, Medical University of Silesia in Katowice, 4 Jagiellońska Street, 41-200 Sosnowiec, Poland
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11
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Borges EM. Silica, hybrid silica, hydride silica and non-silica stationary phases for liquid chromatography. J Chromatogr Sci 2014; 53:580-97. [PMID: 25234386 DOI: 10.1093/chromsci/bmu090] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Free silanols on the surface of silica are the "villains", which are responsible for detrimental interactions of those compounds and the stationary phase (i.e., bad peak shape, low efficiency) as well as low thermal and chemical stability. For these reasons, we began this review describing new silica and hybrid silica stationary phases, which have reduced and/or shielded silanols. At present, in liquid chromatography for the majority of analyses, reversed-phase liquid chromatography is the separation mode of choice. However, the needs for increased selectivity and increased retention of hydrophilic bases have substantially increased the interest in hydrophilic interaction chromatography (HILIC). Therefore, stationary phases and this mode of separation are discussed. Then, non-silica stationary phases (i.e., zirconium oxide, titanium oxide, alumina and porous graphitized carbon), which afford increased thermal and chemical stability and also selectivity different from those obtained with silica and hybrid silica, are discussed. In addition, the use of these materials in HILIC is also reviewed.
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Affiliation(s)
- Endler M Borges
- Núcleo Biotecnológico, Universidade do Oeste de Santa Catarina, Rua Paese, 198, Bairro Universitário-Bloco K. Videira, SC CEP 89560-000, Brazil
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12
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Wang Y, Shi L, Wang A, Tian H, Wang H, Zou C. Preparation of High-Purity (–)-Borneol and Xanthoxylin from Leaves ofBlumea balsamifera(L.) DC. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.891613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Gómez JE, Navarro FH, Sandoval JE. Novel 3-hydroxypropyl-bonded phase by direct hydrosilylation of allyl alcohol on amorphous hydride silica. Electrophoresis 2014; 35:2579-86. [PMID: 24934906 DOI: 10.1002/elps.201400216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 04/22/2014] [Accepted: 05/31/2014] [Indexed: 11/11/2022]
Abstract
A novel 3-hydroxypropyl (propanol)-bonded silica phase has been prepared by hydrosilylation of allyl alcohol on a hydride silica intermediate, in the presence of platinum (0)-divinyltetramethyldisiloxane (Karstedt's catalyst). The regio-selectivity of this synthetic approach had been correctly predicted by previous reports involving octakis(dimethylsiloxy)octasilsesquioxane (Q8 M8 (H) ) and hydrogen silsesquioxane (T8 H8 ), as molecular analogs of hydride amorphous silica. Thus, C-silylation predominated (∼94%) over O-silylation, and high surface coverages of propanol groups (5 ± 1 μmol/m(2) ) were typically obtained in this work. The propanol-bonded phase was characterized by spectroscopic (infrared (IR) and solid-state NMR on silica microparticles), contact angle (on fused-silica wafers) and CE (on fused-silica tubes) techniques. CE studies of the migration behavior of pyridine, caffeine, Tris(2,2'-bipyridine)Ru(II) chloride and lysozyme on propanol-modified capillaries were carried out. The adsorption properties of these select silanol-sensitive solutes were compared to those on the unmodified and hydride-modified tubes. It was found that hydrolysis of the SiH species underlying the immobilized propanol moieties leads mainly to strong ion-exchange-based interactions with the basic solutes at pH 4, particularly with lysozyme. Interestingly, and in agreement with water contact angle and electroosmotic mobility figures, the silanol-probe interactions on the buffer-exposed (hydrolyzed) hydride surface are quite different from those of the original unmodified tube.
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Affiliation(s)
- Jorge E Gómez
- Department of Chemistry, Universidad del Valle, Cali, Colombia
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14
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A Comparison of Silica C and Silica Gel in HILIC Mode: The Effect of Stationary Phase Surface Area. Chromatographia 2014. [DOI: 10.1007/s10337-014-2694-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Heaton JC, Russell JJ, Underwood T, Boughtflower R, McCalley DV. Comparison of peak shape in hydrophilic interaction chromatography using acidic salt buffers and simple acid solutions. J Chromatogr A 2014; 1347:39-48. [PMID: 24813934 DOI: 10.1016/j.chroma.2014.04.026] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 04/07/2014] [Accepted: 04/09/2014] [Indexed: 11/25/2022]
Abstract
The retention and peak shape of neutral, basic and acidic solutes was studied on hydrophilic interaction chromatography (HILIC) stationary phases that showed both strong and weak ionic retention characteristics, using aqueous-acetonitrile mobile phases containing either formic acid (FA), ammonium formate (AF) or phosphoric acid (PA). The effect of organic solvent concentration on the results was also studied. Peak shape was good for neutrals under most mobile phase conditions. However, peak shapes for ionised solutes, particularly for basic compounds, were considerably worse in FA than AF. Even neutral compounds showed deterioration in performance with FA when the mobile phase water concentration was reduced. The poor performance in FA cannot be entirely attributed to the negative impact of ionic retention on ionised silanols on the underlying silica base materials, as results using PA at lower pH (where their ionisation is suppressed) were inferior to those in AF. Besides the moderating influence of the salt cation on ionic retention, it is likely that salt buffers improve peak shape due to the increased ionic strength of the mobile phase and its impact on the formation of the water layer on the column surface.
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Affiliation(s)
- James C Heaton
- Centre for Research in Biosciences, University of the West of England, Frenchay, Bristol BS16 1QY, UK
| | - Joseph J Russell
- Centre for Research in Biosciences, University of the West of England, Frenchay, Bristol BS16 1QY, UK
| | - Tim Underwood
- Analytical Chemistry, GlaxoSmithKline, Gunnels Wood Road, Stevenage, UK
| | | | - David V McCalley
- Centre for Research in Biosciences, University of the West of England, Frenchay, Bristol BS16 1QY, UK.
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16
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Hydrophilic interaction liquid chromatography coupled with MS/MS to detect and quantify dicarboxyethyl glutathione, a metabolic biomarker of the fumarate hydratase deficient cancer cell. J Sep Sci 2013; 36:3303-9. [DOI: 10.1002/jssc.201300602] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 08/05/2013] [Accepted: 08/07/2013] [Indexed: 01/17/2023]
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17
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Yang Y, Boysen RI, Kulsing C, Matyska MT, Pesek JJ, Hearn MTW. Analysis of polar peptides using a silica hydride column and high aqueous content mobile phases. J Sep Sci 2013; 36:3019-25. [DOI: 10.1002/jssc.201300376] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Revised: 06/13/2013] [Accepted: 06/17/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Yuanzhong Yang
- Australian Research Council Special Research Centre for Green Chemistry; Monash University; Melbourne Victoria Australia
| | - Reinhard I. Boysen
- Australian Research Council Special Research Centre for Green Chemistry; Monash University; Melbourne Victoria Australia
| | - Chadin Kulsing
- Australian Research Council Special Research Centre for Green Chemistry; Monash University; Melbourne Victoria Australia
| | - Maria T. Matyska
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Joseph J. Pesek
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Milton T. W. Hearn
- Australian Research Council Special Research Centre for Green Chemistry; Monash University; Melbourne Victoria Australia
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18
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Yang Y, Matyska MT, Boysen RI, Pesek JJ, Hearn MTW. Simultaneous separation of hydrophobic and polar bases using a silica hydride stationary phase. J Sep Sci 2013; 36:1209-16. [DOI: 10.1002/jssc.201201113] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 01/06/2013] [Accepted: 01/07/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Yuanzhong Yang
- Australian Research Council Special Research Centre for Green Chemistry; Monash University; Melbourne Victoria Australia
| | - Maria T. Matyska
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Reinhard I. Boysen
- Australian Research Council Special Research Centre for Green Chemistry; Monash University; Melbourne Victoria Australia
| | - Joseph J. Pesek
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Milton T. W. Hearn
- Australian Research Council Special Research Centre for Green Chemistry; Monash University; Melbourne Victoria Australia
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