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Sadiq Z, Al-Kassawneh M, Safiabadi Tali SH, Jahanshahi-Anbuhi S. Tailoring plasmonic sensing strategies for the rapid and sensitive detection of hypochlorite in swimming water samples. Mikrochim Acta 2024; 191:183. [PMID: 38451315 DOI: 10.1007/s00604-024-06246-y] [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: 11/27/2023] [Accepted: 02/02/2024] [Indexed: 03/08/2024]
Abstract
A tunable plasmonic sensor has been developed by varying the dextran content in the initially synthesized dextran-gold nanoparticle (dAuNPs) solution. A colloidal nanogold solution (dAuNPs-Sol) was initially prepared using dextran and gold salt in alkaline media by a one-pot green synthetic route. The dAuNPs-Sol was combined with varying amounts of dextran (ranging from 0.01 to 30.01%) to create a tunable probe, along with different solid formats, including tablet (dAuNPs-Tab), powder (dAuNPs-Powder), and composite (dAuNPs-Comp). Both the liquid and solid phase plasmonic probes were characterized using UV-vis spectroscopy, transmission electron microscopy (TEM) dynamic light scattering (DLS), and zeta potential analysis. The impact of dextran content in the dAuNP solution is studied in terms of surface charge and hydrodynamic size. The influence of operational treatments used to achieve solid dAuNPs probes is also explored. All plasmonic probes were employed to detect a broad range of OCl¯ concentrations (ranging from µM to mM) in water through aggregation followed by calculating a lower and upper limit of detection (LLoD, ULoD) of the proposed colorimetric sensors. Results indicate that the most sensitive detection is achieved with a lower dextran content (0.01%), which exhibits an LLoD of 50 µM. The dAuNPs-Sol sensor is selective and demonstrates real-world applicability, as confirmed by interference analysis and successful testing with various water samples. Additionally, it is found that a 20 × concentration of dextran-coated gold nanoparticles could be attained without any changes in the particle morphology. This concentration is achieved through a straightforward process that does not require the use of a centrifuge machine. This finding highlights the practicality and simplicity of the method, indicating its potential for scalable and cost-effective production of concentrated dAuNPs without compromising their structural integrity.
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Affiliation(s)
- Zubi Sadiq
- Department of Chemical and Materials Engineering, Gina Cody School of Engineering and Computer Science, Concordia University, Montréal, Québec, Canada
| | - Muna Al-Kassawneh
- Department of Chemical and Materials Engineering, Gina Cody School of Engineering and Computer Science, Concordia University, Montréal, Québec, Canada
| | - Seyed Hamid Safiabadi Tali
- Department of Chemical and Materials Engineering, Gina Cody School of Engineering and Computer Science, Concordia University, Montréal, Québec, Canada
| | - Sana Jahanshahi-Anbuhi
- Department of Chemical and Materials Engineering, Gina Cody School of Engineering and Computer Science, Concordia University, Montréal, Québec, Canada.
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Prukjareonchook A, Alahmad W, Kraiya C, Kulsing C, Chaisuwan T, Dubas L. A selective and sensitive colorimetric method for semi-automated solid-phase extraction of atrazine in environmental water samples. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Dembek M, Bocian S, Buszewski B. Solvent Influence on Zeta Potential of Stationary Phase-Mobile Phase Interface. Molecules 2022; 27:molecules27030968. [PMID: 35164234 PMCID: PMC8839144 DOI: 10.3390/molecules27030968] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/07/2022] [Accepted: 01/27/2022] [Indexed: 11/29/2022] Open
Abstract
Zeta potential is a surface characteristic formed on the solid surface and liquid interface. It is an interesting way to describe the surface properties of materials; thus, a series of four homemade polar embedded stationary phases that contain phosphate groups incorporated into hydrophobic ligands were investigated according to surface zeta potential. Measurements were carried out using Zetasizer Nano ZS for the stationary phases suspensions prepared in various solvent and solvent binary mixtures. The negative zeta potential values were obtained for most cases due to negatively charged residual silanols and phosphate groups. However, in some solvents: tetrahydrofuran, isopropanol, and toluene zeta potential are positive. Additionally, it was observed that the zeta potential seems to be independent of the type of silica gel used for the stationary phase synthesis.
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Affiliation(s)
| | - Szymon Bocian
- Correspondence: ; Tel.: +48-56-611-4308; Fax: +48-56-611-4837
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Aasim M, Khan MH, Bibi NS, Fernandez-Lahore M. Understanding the interaction of proteins to ion exchange chromatographic supports: A surface energetics approach. Biotechnol Prog 2022; 38:e3232. [PMID: 35037430 DOI: 10.1002/btpr.3232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/17/2021] [Accepted: 01/10/2022] [Indexed: 11/10/2022]
Abstract
Ion exchange chromatography is one of the most widely used chromatographic technique for the separation and purification of important biological molecules. Due to its wide applicability in separation processes, a targeted approach is required to suggest the effective binding conditions during ion exchange chromatography. A surface energetics approach was used to study the interaction of proteins to different types of ion exchange chromatographic beads. The basic parameters used in this approach are derived from the contact angle, streaming potential, and zeta potential values. The interaction of few model proteins to different anionic and cationic exchanger, with different backbone chemistry i.e., agarose and methacrylate, was performed. Generally, under binding conditions, it was observed that proteins having negative surface charges showed strong to lose interaction (20 kT for Hannilase to 0.5 kT for IgG) with different anionic exchangers (having different positive surface charges). On the contrary, anionic exchangers showed almost no interaction (0 - 0.1 kT) with the positively charged proteins. An inverse behavior was observed for the interaction of proteins to cationic exchangers. The outcome from these theoretical calculations can predict the binding behavior of different proteins under real ion exchange chromatographic conditions. This will ultimately propose a better bioprocess design for protein separation. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Muhammad Aasim
- Department of Biotechnology, University of Malakand, Lower Dir, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad H Khan
- School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, P. R. China
| | - Noor Shad Bibi
- Department of Biochemistry, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Marcelo Fernandez-Lahore
- Downstream Bioprocessing Laboratory, School of Engineering and Science, Jacobs University, Campus Ring 1, Bremen, Germany
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Application of linear solvation energy relationships and principal component analysis methods for the prediction of the retention behaviour of E-resveratrol analogues with substituted silica hydride stationary phases. Anal Chim Acta 2019; 1090:159-171. [DOI: 10.1016/j.aca.2019.08.072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 01/03/2023]
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Theoretical Analysis of Efficiency of Multi-Layer Core-Shell Stationary Phases in the High Performance Liquid Chromatography of Large Biomolecules. Molecules 2019; 24:molecules24152849. [PMID: 31390734 PMCID: PMC6695945 DOI: 10.3390/molecules24152849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 08/02/2019] [Accepted: 08/03/2019] [Indexed: 11/24/2022] Open
Abstract
Modern analytical applications of liquid chromatography require columns with higher and higher efficiencies. In this work, the general rate model (GRM) of chromatography is used for the analysis of the efficiency of core-shell phases having two porous layers with different structures and/or surface chemistries. The solution of the GRM in the Laplace domain allows for the calculation of moments of elution curves (retention time and peak width), which are used for the analysis of the efficiency of bi-layer particles with and without a non-porous core. The results demonstrate that bi-layer structures can offer higher separation power than that of the two layers alone if the inner layer has smaller surface coverage (retentivity) and the pore size and pore diffusion of the outer layer is either equal to or higher than that of the inner layer. Even in the case of core-shell phases, there is an increase in resolution by applying the bi-layer structure; however, we can always find a mono-layer core-shell particle structure with a larger core size that provides better resolution. At the optimal core size, the resolution cannot be further improved by applying a bi-layer structure. However, in case of the most widely produced general-purpose core-shell particles, where the core is ∼70% of the particle diameter, a 15–20% gain of resolution can be obtained by using well-designed and optimized bi-layer core-shell phases.
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The Development of Silica Hydride Stationary Phases for High-Performance Liquid Chromatography from Conception to Commercialization. SEPARATIONS 2019. [DOI: 10.3390/separations6020027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The development of a stationary phase material for high-performance liquid chromatography based on a surface of silica hydride as opposed to silanols on ordinary silica is discussed including synthetic approaches, characterization, and applications. There are several synthetic approaches available to create a silica hydride surface. Modification of the Si–H moiety on the silica surface can be accomplished through the use of a hydrosilation reaction. Both the intermediate silica hydride and the material modified with an organic moiety can be characterized by a number of spectroscopic as well as a variety of other methods. Further insights into the retention mechanism are provided through chromatographic measurements. The ultimate utility of any chromatographic stationary phase material is determined by its success in solving challenging analytical problems. A broad range of applications is reviewed to illustrate the versatility and usefulness of silica hydride-based stationary phases.
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Kulsing C, Nolvachai Y, Boysen RI, Matyska MT, Pesek JJ, Marriott PJ, Hearn MTW. Studies on the Extraction of Several Polyphenols with Different Silica Hydride Stationary Phases. Chromatographia 2019. [DOI: 10.1007/s10337-019-03727-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Žuvela P, Skoczylas M, Jay Liu J, Ba Czek T, Kaliszan R, Wong MW, Buszewski B, Héberger K. Column Characterization and Selection Systems in Reversed-Phase High-Performance Liquid Chromatography. Chem Rev 2019; 119:3674-3729. [PMID: 30604951 DOI: 10.1021/acs.chemrev.8b00246] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Reversed-phase high-performance liquid chromatography (RP-HPLC) is the most popular chromatographic mode, accounting for more than 90% of all separations. HPLC itself owes its immense popularity to it being relatively simple and inexpensive, with the equipment being reliable and easy to operate. Due to extensive automation, it can be run virtually unattended with multiple samples at various separation conditions, even by relatively low-skilled personnel. Currently, there are >600 RP-HPLC columns available to end users for purchase, some of which exhibit very large differences in selectivity and production quality. Often, two similar RP-HPLC columns are not equally suitable for the requisite separation, and to date, there is no universal RP-HPLC column covering a variety of analytes. This forces analytical laboratories to keep a multitude of diverse columns. Therefore, column selection is a crucial segment of RP-HPLC method development, especially since sample complexity is constantly increasing. Rationally choosing an appropriate column is complicated. In addition to the differences in the primary intermolecular interactions with analytes of the dispersive (London) type, individual columns can also exhibit a unique character owing to specific polar, hydrogen bond, and electron pair donor-acceptor interactions. They can also vary depending on the type of packing, amount and type of residual silanols, "end-capping", bonding density of ligands, and pore size, among others. Consequently, the chromatographic performance of RP-HPLC systems is often considerably altered depending on the selected column. Although a wide spectrum of knowledge is available on this important subject, there is still a lack of a comprehensive review for an objective comparison and/or selection of chromatographic columns. We aim for this review to be a comprehensive, authoritative, critical, and easily readable monograph of the most relevant publications regarding column selection and characterization in RP-HPLC covering the past four decades. Future perspectives, which involve the integration of state-of-the-art molecular simulations (molecular dynamics or Monte Carlo) with minimal experiments, aimed at nearly "experiment-free" column selection methodology, are proposed.
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Affiliation(s)
- Petar Žuvela
- Department of Chemistry , National University of Singapore , Singapore 117543 , Singapore
| | - Magdalena Skoczylas
- Department of Environmental Chemistry and Bioanalytics, Center for Modern Interdisciplinary Technologies , Nicolaus Copernicus University , Wileńska 4 , 87-100 Toruń , Poland
| | - J Jay Liu
- Department of Chemical Engineering , Pukyong National University , 365 Sinseon-ro , Nam-gu, 48-513 Busan , Korea
| | | | | | - Ming Wah Wong
- Department of Chemistry , National University of Singapore , Singapore 117543 , Singapore
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalytics, Center for Modern Interdisciplinary Technologies , Nicolaus Copernicus University , Wileńska 4 , 87-100 Toruń , Poland
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Kulsing C, Nolvachai Y, Matyska MT, Pesek JJ, Topete J, Boysen RI, Hearn MTW. Origin of the selectivity differences of aromatic alcohols and amines of different n-alkyl chain length separated with perfluorinated C8 and bidentated C8 modified silica hydride stationary phases. Anal Chim Acta X 2018; 1:100003. [PMID: 33186417 PMCID: PMC7587035 DOI: 10.1016/j.acax.2018.100003] [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: 10/19/2018] [Revised: 12/17/2018] [Accepted: 12/22/2018] [Indexed: 11/15/2022] Open
Abstract
Perfluorinated C8-(PerfluoroC8) and bidentate anchored C8-(BDC8)-modified silica hydride stationary phases have been employed for the isocratic separation of homologous phenylalkanols and phenylalkylamines differing in their n-alkyl chain length, using aqueous-acetonitrile (ACN) mobile phases of different ACN contents from 10 to 90% (v/v) in 10% increments. These analytes showed reversed-phase (RP) retention behaviour with mobile phases of <40% (v/v) ACN content with both stationary phases but with the BDC8 stationary phase providing longer retention. The PerfluoroC8, but not the BDC8, stationary phase also exhibited significant retention of these analytes under conditions typical of an aqueous normal phase (ANP) mode (i.e. with mobile phases of >80% (v/v) ACN content), with the analytes exhibiting overall U-shape retention dependencies on the ACN content of the mobile phase. Further, these stationary phases showed differences in their selectivity behaviour with regard to the n-alkyl chain lengths of the different analytes. These observations could not be explained in terms of pK a , log P, molecular mass or linear solvation energy concepts. However, density functional theory (DFT) simulations provided a possible explanation for the observed selectivity trends, namely differences in the molecular geometries and structural organisation of the immobilised ligands of these two stationary phases under different solvational conditions. For mobile phase conditions favouring the RP mode, these DFT simulations revealed that interactions between adjacent BDC8 ligands occur, leading to a stationary phase with a more hydrophobic surface. Moreover, under mobile phase conditions favouring retention of the analytes in an ANP mode, these interactions of the bidentate-anchored C8 ligands resulted in hindered analyte access to potential ANP binding sites on the BDC8 stationary phase surface. With the PerfluoroC8 stationary phase, the DFT simulations revealed strong repulsion of individual perfluoroC8 ligand chains, with the perfluoroC8 ligands of this stationary phase existing in a more open brush-like state (and with a less hydrophobic surface) compared to the BDC8 ligands. These DFT simulation results anticipated the chromatographic findings that the phenylalkanols and phenylalkylamines had reduced retention in the RP mode with the PerfluoroC8 stationary phase. Moreover, the more open ligand structure of the PerfluoroC8 stationary phase enabled greater accessibility of the analytes to water solvated binding sites on the stationary phase surface under mobile phase conditions favouring an ANP retention mode, leading to retention of the analytes, particularly the smaller phenylalkylamines, via hydrogen bonding and electrostatic effects.
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Key Words
- ACN, acetonitrile
- ANP, aqueous normal-phase
- Aqueous normal-phase
- BDC8, bidentate octyl
- DFT, density functional theory
- DH, Diamond Hydride
- HILIC, hydrophilic interaction chromatography
- LC, liquid chromatography
- LSER, linear solvation energy relationship
- PerfluoroC8, perfluorinated octyl
- RP, reversed-phase
- Reversed-phase
- Shape specific separation
- Silica hydride
- n-alkyl chain length selectivities
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Affiliation(s)
- Chadin Kulsing
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria, 3800, Australia
| | - Yada Nolvachai
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria, 3800, Australia
| | - Maria T Matyska
- Department of Chemistry, San Jose State University, San Jose, CA, 95192, USA
| | - Joseph J Pesek
- Department of Chemistry, San Jose State University, San Jose, CA, 95192, USA
| | - Joshua Topete
- Department of Chemistry, San Jose State University, San Jose, CA, 95192, USA
| | - Reinhard I Boysen
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria, 3800, Australia
| | - Milton T W Hearn
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria, 3800, Australia
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Skoczylas M, Bocian S, Buszewski B. Influence of silica functionalization by amino acids and peptides on the stationary phases zeta potential. J Chromatogr A 2018; 1573:98-106. [DOI: 10.1016/j.chroma.2018.08.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/20/2018] [Accepted: 08/30/2018] [Indexed: 10/28/2022]
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Jandera P, Hájek T. Mobile phase effects on the retention on polar columns with special attention to the dual hydrophilic interaction-reversed-phase liquid chromatography mechanism, a review. J Sep Sci 2017; 41:145-162. [DOI: 10.1002/jssc.201701010] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/04/2017] [Accepted: 10/04/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Pavel Jandera
- Department of Analytical Chemistry; Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
| | - Tomáš Hájek
- Department of Analytical Chemistry; Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
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Jia F, Zhou L, Wu W. Interrelationships among hydrogen permeation, physiochemical properties and early adsorption abilities of titanium. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:194. [PMID: 29149422 DOI: 10.1007/s10856-017-6002-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/06/2017] [Indexed: 06/07/2023]
Abstract
This study aimed to investigate if the titanium samples with low hydrogen permeation which treated with a novel etching combination: phosphoric acid and sodium fluoride could influence the surface physiochemical properties and early adsorption ability. Titanium samples were treated with three different concentrations of the new formula, as groups A, B and C, and treated with the traditional etching formula, as group T. Zeta potential, contact angle, X-ray photoelectron spectroscopy (XPS) and fibronectin (FN)/vitronectin (VN) adsorption of Sprague-Dawley (SD) rat tibial osteotomies in the initial 30min and MG-63 adsorption in the initial 24 h were detected. Basing on the results of trails and pearson correlation analysis, the low hydrogen permeation into titanium didn't exert an impact on the surface morphology and surface stability. The adsorptions of F, P, S, acid hydroxyl and basic hydroxyl on the surfaces brought no bear on them as well. Surface concave depth and surface skewness showed highly positive correlation and moderate negative correlation with adsorption ability, respectively. Therefore, the surface morphology of titanium treated with the novel etching formula plays the only and primary role on the early adsorption. Because of its specific surface topography, group C showed the best performance which possessed slightly superiority than those of group B and group T, and with the lowest being group A. The low hydrogen permeation into titanium substrate was just benefit for improving the titanium mechanical properties, but not for the surface biochemical traits.
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Affiliation(s)
- Fang Jia
- Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou, People's Republic of China.
| | - Lei Zhou
- Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Wangxi Wu
- Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou, People's Republic of 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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Jandera P, Janás P. Recent advances in stationary phases and understanding of retention in hydrophilic interaction chromatography. A review. Anal Chim Acta 2017; 967:12-32. [DOI: 10.1016/j.aca.2017.01.060] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 01/05/2017] [Accepted: 01/06/2017] [Indexed: 12/01/2022]
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Kulsing C, Yang Y, Chowdhury JM, Boysen RI, Hearn MTW. Use of peak sharpening effects to improve the separation of chiral compounds with molecularly imprinted porous polymer layer open‐tubular capillaries. Electrophoresis 2017; 38:1179-1187. [DOI: 10.1002/elps.201600532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 01/24/2017] [Accepted: 01/26/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Chadin Kulsing
- Australian Centre for Research on Separation Science (ACROSS), Australian Research Council Special Research Centre for Green Chemistry School of Chemistry Monash University Melbourne Victoria Australia
| | - Yuanzhong Yang
- Australian Centre for Research on Separation Science (ACROSS), Australian Research Council Special Research Centre for Green Chemistry School of Chemistry Monash University Melbourne Victoria Australia
| | - Jamil M. Chowdhury
- Australian Centre for Research on Separation Science (ACROSS), Australian Research Council Special Research Centre for Green Chemistry School of Chemistry Monash University Melbourne Victoria Australia
| | - Reinhard I. Boysen
- Australian Centre for Research on Separation Science (ACROSS), Australian Research Council Special Research Centre for Green Chemistry School of Chemistry Monash University Melbourne Victoria Australia
| | - Milton T. W. Hearn
- Australian Centre for Research on Separation Science (ACROSS), Australian Research Council Special Research Centre for Green Chemistry School of Chemistry Monash University Melbourne Victoria Australia
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Li H, Liu C, Wang Q, Zhou H, Jiang Z. The effect of charged groups on hydrophilic monolithic stationary phases on their chromatographic properties. J Chromatogr A 2016; 1469:77-87. [PMID: 27692647 DOI: 10.1016/j.chroma.2016.09.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 09/21/2016] [Accepted: 09/24/2016] [Indexed: 01/03/2023]
Abstract
In order to investigate the effect of charged groups present in hydrophilic monolithic stationary phases on their chromatographic properties, three charged hydrophilic monomers, i.e. N,N-dimethyl-N-acryloyloxyethyl-N-(3-sulfopropyl)ammonium betaine (SPDA), [2-(acryloyloxy)ethyl]trimethylammonium chloride (AETA), and 3-sulfopropyl acrylate potassium salt (SPA) were co-polymerized with the crosslinker N,N'-methylenebisacrylamide (MBA), respectively. The physicochemical properties of the three resulting charged hydrophilic monolithic columns were evaluated using scanning electron microscopy, ζ-potential analysis and micro-HPLC. High column efficiency was obtained on the three monolithic columns at a linear velocity of 1mm/s using thiourea as test compound. Comparative characterization of the three charged HILIC phases was then carried out using a set of model compounds, including nucleobases, nucleosides, benzoic acid derivatives, phenols, β-blockers and small peptides. Depending on the combination of stationary phase/mobile phase/solute, both hydrophilic interaction and other potential secondary interactions, including electrostatic interaction, hydrogen-bonding interaction, molecular shape selectivity, could contribute to the over-all retention of the analytes. Because of the strong electrostatic interaction provided by the quaternary ammonium groups in the poly (AETA-co-MBA) monolith, this cationic HILIC monolith exhibited the strongest retention for benzoic acid derivatives and small peptides with distorted peak shapes and the weakest retention for basic β-blockers. The sulfonyl groups on the poly (SPA-co-MBA) hydrophilic monolith could provide strong electrostatic attraction and hydrogen bonding for positively charged analytes and hydrogen-donor/acceptor containing analytes, respectively. Therefore, basic drugs, nucleobases and nucleotides exhibited the strongest retention on this anionic monolith. Because of the weak but distinct cation exchange properties of the zwitterionic poly (SPDA-co-MBA) hydrophilic monolith, it exhibited the best separation for most test analytes (including phenols, β-blockers and small peptides) in terms of selectivity, peak shape and analysis time. The poly (AETA-co-MBA) hydrophilic monolithic column provides the best separation of nucleobases and nucleosides. These results could guide the selection and application of these charged HILIC monoliths in the future.
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Affiliation(s)
- Haibin Li
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Chusheng Liu
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Qiqin Wang
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Haibo Zhou
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Zhengjin Jiang
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China.
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Kulsing C, Yang Y, Sepehrifar R, Lim M, Toppete J, Matyska MT, Pesek JJ, Boysen RI, Hearn MTW. Investigations into the separation behaviour of perfluorinated C8 and undecanoic acid modified silica hydride stationary phases. Anal Chim Acta 2016; 916:102-11. [PMID: 27016444 DOI: 10.1016/j.aca.2016.02.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/12/2016] [Accepted: 02/14/2016] [Indexed: 11/25/2022]
Abstract
In this study, the surface charge properties of perfluorinated C8 (PerfluoroC8) and undecanoic acid (UDA) modified silica hydride stationary phases have been investigated. The zeta potential values of these stationary phases were measured in aqueous/acetonitrile mobile phases of different pH, buffer concentrations and acetonitrile contents. The retention behaviour of several basic, acidic and neutral compounds were then examined with these two stationary phases, with U-shaped retention dependencies evident with regard to the organic solvent content of the mobile phase. Plots of the logarithmic retention factor versus buffer concentration revealed slopes ≥ -0.41 for both stationary phases, indicating the involvement of mixed mode retention mechanisms with contributions from both ionic and non-ionic interactions. Using a linear solvation energy relationship approach, the origins of these interactions under different mobile phase conditions were differentiated and quantified. The PerfluoroC8 stationary phase exhibited stronger retention for basic compounds under high acetonitrile content mobile phase conditions, whilst stronger retention was observed for all compounds with the UDA stationary phase under high aqueous content mobile phase conditions. The more negative zeta potentials of the UDA stationary phase correlated with higher total charge density, surface charge density and charge density at the beta plane (the outer plane of the double layer) compared to the PerfluoroC8 stationary phase. With mobile phases of low buffer concentrations, more negative zeta potential values were unexpectedly observed for the PerfluoroC8 stationary phase with slight increases in the C descriptor value, reflecting also the greater accessibility of the analytes to the stationary phase surface. Comparison of the retention behaviours on these phases with other types of silica hydride stationary phases has revealed different patterns of selectivity.
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Affiliation(s)
- Chadin Kulsing
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria 3800, Australia
| | - Yuanzhong Yang
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria 3800, Australia
| | - Roshanak Sepehrifar
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria 3800, Australia
| | - Michael Lim
- Department of Chemistry, San Jose State University, San Jose, CA 95192, USA
| | - Joshua Toppete
- Department of Chemistry, San Jose State University, San Jose, CA 95192, USA
| | - Maria T Matyska
- Department of Chemistry, San Jose State University, San Jose, CA 95192, USA
| | - Joseph J Pesek
- Department of Chemistry, San Jose State University, San Jose, CA 95192, USA
| | - Reinhard I Boysen
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria 3800, Australia
| | - Milton T W Hearn
- Australian Centre for Research on Separation Science (ACROSS), School of Chemistry, Monash University, Melbourne, Victoria 3800, Australia.
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Pesek JJ, Matyska MT, Natekar H. Evaluation of the dual retention properties of stationary phases based on silica hydride: Perfluorinated bonded material. J Sep Sci 2016; 39:1050-5. [DOI: 10.1002/jssc.201501241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 12/28/2015] [Accepted: 12/28/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Joseph J. Pesek
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Maria T. Matyska
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Harshada Natekar
- Department of Chemistry; San Jose State University; San Jose CA USA
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20
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Romand S, Rudaz S, Guillarme D. Separation of substrates and closely related glucuronide metabolites using various chromatographic modes. J Chromatogr A 2016; 1435:54-65. [DOI: 10.1016/j.chroma.2016.01.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/13/2016] [Accepted: 01/13/2016] [Indexed: 10/22/2022]
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22
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Zimmermann A, Horak J, Sánchez-Muñoz OL, Lämmerhofer M. Surface charge fine tuning of reversed-phase/weak anion-exchange type mixed-mode stationary phases for milder elution conditions. J Chromatogr A 2015. [DOI: 10.1016/j.chroma.2015.07.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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23
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Bocian S, Dziubakiewicz E, Buszewski B. Influence of the charge distribution on the stationary phases zeta potential. J Sep Sci 2015; 38:2625-9. [DOI: 10.1002/jssc.201500072] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 05/08/2015] [Accepted: 05/09/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Szymon Bocian
- Department of Environmental Chemistry & Bioanalytics; Faculty of Chemistry, Nicolaus Copernicus University; Torun Poland
| | - Ewelina Dziubakiewicz
- Department of Environmental Chemistry & Bioanalytics; Faculty of Chemistry, Nicolaus Copernicus University; Torun Poland
| | - Bogusław Buszewski
- Department of Environmental Chemistry & Bioanalytics; Faculty of Chemistry, Nicolaus Copernicus University; Torun Poland
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24
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Pesek JJ, Matyska MT. Ammonium fluoride as a mobile phase additive in aqueous normal phase chromatography. J Chromatogr A 2015; 1401:69-74. [PMID: 26008598 DOI: 10.1016/j.chroma.2015.05.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/22/2015] [Accepted: 05/06/2015] [Indexed: 11/17/2022]
Abstract
The use of ammonium fluoride as a mobile phase additive in aqueous normal phase chromatography with silica hydride-based stationary phases and mass spectrometry detection is evaluated. Retention times, peak shape, efficiency and peak intensity are compared to the more standard additives formic acid and ammonium formate. The test solutes were NAD, 3-hydroxyglutaric acid, α-ketoglutaric acid, p-aminohippuric acid, AMP, ATP, aconitic acid, threonine, N-acetyl carnitine, and 3-methyladipic acid. The column parameters are assessed in both the positive and negative ion detection modes. Ammonium fluoride is potentially an aggressive mobile phase additive that could have detrimental effects on column lifetime. Column reproducibility is measured and the effects of switching between different additives are also tested.
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Affiliation(s)
- Joseph J Pesek
- Department of Chemistry, San Jose State University, San Jose, CA 95192, USA.
| | - Maria T Matyska
- Department of Chemistry, San Jose State University, San Jose, CA 95192, USA
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25
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Comparison of the performance of different silica hydride particles for the solid-phase extraction of non-volatile analytes from dark chocolate with analysis by gas chromatography–quadrupole mass spectrometry. Food Chem 2015; 174:434-9. [DOI: 10.1016/j.foodchem.2014.10.083] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/09/2014] [Accepted: 10/15/2014] [Indexed: 01/10/2023]
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26
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Pesek JJ, Matyska MT, Dang A. Analysis of ethyl glucuronide and ethyl sulfate using aqueous normal-phase chromatography with mass spectrometry. J Sep Sci 2015; 38:1515-20. [DOI: 10.1002/jssc.201401307] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 02/05/2015] [Accepted: 02/05/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Joseph J. Pesek
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Maria T. Matyska
- Department of Chemistry; San Jose State University; San Jose CA USA
| | - Andy Dang
- Department of Chemistry; San Jose State University; San Jose CA USA
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Kulsing C, Nolvachai Y, Marriott PJ, Boysen RI, Matyska MT, Pesek JJ, Hearn MTW. Insights into the Origin of the Separation Selectivity with Silica Hydride Adsorbents. J Phys Chem B 2015; 119:3063-9. [DOI: 10.1021/jp5103753] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chadin Kulsing
- School
of Chemistry, Monash University, Melbourne, VIC 3800, Australia
| | - Yada Nolvachai
- School
of Chemistry, Monash University, Melbourne, VIC 3800, Australia
- Australian
Centre for Research on Separation Science, School of Chemistry, Monash University, Melbourne, VIC 3800, Australia
| | - Philip J. Marriott
- School
of Chemistry, Monash University, Melbourne, VIC 3800, Australia
- Australian
Centre for Research on Separation Science, School of Chemistry, Monash University, Melbourne, VIC 3800, Australia
| | | | - Maria T. Matyska
- Department
of Chemistry, San Jose State University, San Jose, California 95192, United States
| | - Joseph J. Pesek
- Department
of Chemistry, San Jose State University, San Jose, California 95192, United States
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28
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Prediction of the zeta potentials and ionic descriptors of a silica hydride stationary phase with mobile phases of different pH and ionic strength. Anal Chim Acta 2015; 859:79-86. [DOI: 10.1016/j.aca.2014.10.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/28/2014] [Accepted: 10/31/2014] [Indexed: 11/23/2022]
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