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Mansour FR, Hilder EF, Algethami FK, Alomar T, Arrua RD. Effect of hydrophilic/lipophilic balance on the porogenic properties of non-ionic surfactants for monolith preparation and chromatographic separation. J Chromatogr A 2023; 1699:463991. [PMID: 37104946 DOI: 10.1016/j.chroma.2023.463991] [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: 02/07/2023] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023]
Abstract
The effect of hydrophilic/lipophilic balance (HLB) of polyoxyethylene ethers of different chain lengths on the microporogenic properties of the Brij surfactants has been studied. The objective of this work is to help better understand the role of each porogen and to set criteria for selecting the proper non-ionic surfactant, based on the HLB value. Seven recipes of different porogen compositions were first prepared and the highest efficiency was achieved using decane/decanol/dodecanol mixture with Brij® 30. Then, four other Brij surfactants covering the entire HLB scale were tested, and the prepared monoliths were characterized by SEM, BET, FT-IR and chromatography. The results showed that increasing the HLB from 9.72 to 18.84 was accompanied by an increase in monolith density and surface areas. The optimum HLB range was found to be 10 to 15. Surfactants of lower HLB formed either nonporous or less efficient columns, while those of higher HLB formed non-permeable columns. Adjusting the HLB was possible by mixing surfactants of different HLB. The prepared monoliths could be used in the isocratic mode with a mobile phase consisting of a mixture of ACN and water (20:80, v/v) at a flow rate of 1.5 μL min-1 to separate five sulfa drugs. The separation results showed that the elution order of the compounds correlated with their lipophilicity, with sulfamerazine (logp = 0.52) being the first to elute, and sulfaquinoxoline (logp=1.70) being the most retained. The asymmetry factors of the separated compounds ranged between 1.18 and 1.25, and the resolution was found to be in the range 2.92-7.80. The prepared monoliths could be also successfully separate a mixture of four different nonsteroidal anti-inflammatory drugs and a mixture of four benzoic acid derivatives. This work assists in optimizing the surfactant-based porogenic mixture to meet the desired porosity, surface area, morphology and chromatographic separation requirements.
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Affiliation(s)
- Fotouh R Mansour
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt; Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Tasmania, Australia.
| | - Emily F Hilder
- Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Tasmania, Australia; Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide SA 5095, Australia
| | - Faisal K Algethami
- Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 90905, Riyadh, 11623, Kingdom of Saudi Arabia
| | - Taghrid Alomar
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - R Dario Arrua
- Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Tasmania, Australia; Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide SA 5095, Australia
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2
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Korzhikova‐Vlakh EG, Tennikova TB. Some factors affecting pore size in the synthesis of rigid polymer monoliths: Theory and its applicability. J Appl Polym Sci 2022. [DOI: 10.1002/app.51431] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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3
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Mansour FR, Desire CT, Hilder EF, Arrua RD. Effect of ethoxylated sorbitan ester surfactants on the chromatographic efficiency of poly(ethylene glycol)-based monoliths. J Chromatogr A 2021; 1654:462464. [PMID: 34438302 DOI: 10.1016/j.chroma.2021.462464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 01/04/2023]
Abstract
The effect of adding ethoxylated sorbitan ester surfactants (Tweens®) to poly(ethylene glycol) diacrylate-based monolithic recipes was investigated. Five different Tweens® have been evaluated to investigate the exact role of non-ionic surfactants in poly(ethylene glycol) diacrylate-based monolith preparations. These monoliths were characterized by scanning electron microscopy, infrared spectroscopy, and nitrogen physisorption analysis. Different morphological features, and surface areas were observed when different types of Tween® were included in the recipe; Tween® 20 and 85 showed small globules, while Tween® 40, 60 and 80 exhibited larger globular structures with different sizes and degrees of coalescence. The different Tween®-based monoliths were investigated for the chromatographic separation of mixtures consisting of hydroxybenzoic acids and alkylbenzenes. These columns were mechanically stable, except for Tween® 80. The highest methylene selectivity and the best overall performance were achieved by Tween® 60. The efficiency was increased by increasing the concentration of the Tween® 60 and the amount of poly(ethylene glycol) diacrylate Mn 700 in the recipes up to 30 wt%, each. Further increases in either Tween® 60 or poly(ethylene glycol) diacrylate Mn 700 led to formation of non-permeable columns. The optimized column was successfully used for separation of mixtures of nonsteroidal anti-inflammatory and sulfa drugs, with a maximum efficiency of 60,000 plates/m.
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Affiliation(s)
- Fotouh R Mansour
- Department of Pharmaceutical Analytical Chemistry, Tanta University, Tanta, Egypt; Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Tasmania, Australia
| | - Christopher T Desire
- Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Tasmania, Australia; Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide SA 5095, Australia
| | - Emily F Hilder
- Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Tasmania, Australia; Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide SA 5095, Australia
| | - R Dario Arrua
- Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Tasmania, Australia; Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide SA 5095, Australia.
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Mansour FR, Arrua RD, Desire CT, Hilder EF. Non-ionic Surface Active Agents as Additives toward a Universal Porogen System for Porous Polymer Monoliths. Anal Chem 2021; 93:2802-2810. [PMID: 33496173 DOI: 10.1021/acs.analchem.0c03889] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The influence of the addition of various non-ionic surfactants to poly(ethylene glycol) diacrylate-based monolith formulations was studied. Eight non-ionic surfactants having different chemistries were chosen for this study. These surfactants were Brij L4, Span 80, IGEPAL CO-520, Tergitol 15S9, 2,4,7,9-tetramethyl-5-decyne-4,7-diol ethoxylate, Tween 40, Triton X-405, and Tetronic 701. The chemical structures of these surfactants have a variety of functional groups and cover a wide range of molecular weights (360-3600 g/mol), viscosities (60-1500 cP), and hydrophilic-lipophilic balances (1.0-17.6). The formed polymers were characterized by scanning electron microscopy, surface area measurement by the Brunauer-Emmet-Teller method, elemental analysis, and Fourier transform infrared. Four formulations, involving the use of surfactants, resulted in permeable materials when prepared in 150 μm ID silica capillaries. The chromatographic performance of the resulting columns in reversed-phase mode was evaluated and compared using a mixture of alkyl benzenes as test analytes. The highest efficiency and methylene selectivity were observed when Tween 40 was included in the formulation, using decane/decanol/dodecanol as coporogens. This porogenic mixture was successfully used for preparation of monolithic columns from a selection of methacrylate- and styrene-based monomers, including butylmethacrylate, hydroxyethymethacrylate, laurylmethacrylate, glycidyl methacrylate, bisphenol diacrylate, benzylmethacrylate, and N,N-dimethylacrylamide, as well as for divinylbenzene. These results show the applicability of this porogenic mixture for a variety of monolithic formulations, providing an approach for developing a universal porogen system.
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Affiliation(s)
- Fotouh R Mansour
- Department of Pharmaceutical Analytical Chemistry, Tanta University, Tanta 31111, Egypt.,Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Hobart, Tasmania 7005, Australia
| | - R Dario Arrua
- Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Hobart, Tasmania 7005, Australia.,Future Industries Institute, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia
| | - Christopher T Desire
- Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Hobart, Tasmania 7005, Australia.,Future Industries Institute, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia
| | - Emily F Hilder
- Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Hobart, Tasmania 7005, Australia.,Future Industries Institute, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia
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Moga A, Vergara-Barberán M, Lerma-García MJ, Herrero-Martínez JM, Simó-Alfonso EF. Poly(ethylene glycol) diacrylate-based solid-phase extraction for determination of sulfonamides in meat samples. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104931] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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6
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Urban J. Are we approaching a post‐monolithic era? J Sep Sci 2020; 43:1628-1633. [DOI: 10.1002/jssc.201901331] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 01/17/2020] [Accepted: 01/22/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Jiří Urban
- Department of ChemistryFaculty of ScienceMasaryk University Brno Czech Republic
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Ma S, Li Y, Ma C, Wang Y, Ou J, Ye M. Challenges and Advances in the Fabrication of Monolithic Bioseparation Materials and their Applications in Proteomics Research. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902023. [PMID: 31502719 DOI: 10.1002/adma.201902023] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 06/29/2019] [Indexed: 06/10/2023]
Abstract
High-performance liquid chromatography integrated with tandem mass spectrometry (HPLC-MS/MS) has become a powerful technique for proteomics research. Its performance heavily depends on the separation efficiency of HPLC, which in turn depends on the chromatographic material. As the "heart" of the HPLC system, the chromatographic material is required to achieve excellent column efficiency and fast analysis. Monolithic materials, fabricated as continuous supports with interconnected skeletal structure and flow-through pores, are regarded as an alternative to particle-packed columns. Such materials are featured with easy preparation, fast mass transfer, high porosity, low back pressure, and miniaturization, and are next-generation separation materials for high-throughput proteins and peptides analysis. Herein, the recent progress regarding the fabrication of various monolithic materials is reviewed. Special emphasis is placed on studies of the fabrication of monolithic capillary columns and their applications in separation of biomolecules by capillary liquid chromatography (cLC). The applications of monolithic materials in the digestion, enrichment, and separation of phosphopeptides and glycopeptides from biological samples are also considered. Finally, advances in comprehensive 2D HPLC separations using monolithic columns are also shown.
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Affiliation(s)
- Shujuan Ma
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Ya Li
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Chen Ma
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Yan Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Junjie Ou
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mingliang Ye
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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Mansour FR, Waheed S, Paull B, Maya F. Porogens and porogen selection in the preparation of porous polymer monoliths. J Sep Sci 2019; 43:56-69. [DOI: 10.1002/jssc.201900876] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/26/2019] [Accepted: 09/29/2019] [Indexed: 01/10/2023]
Affiliation(s)
- Fotouh R. Mansour
- Department of Pharmaceutical Analytical ChemistryFaculty of PharmacyTanta University Tanta Egypt
- Pharmaceutical Services CenterFaculty of PharmacyTanta University Tanta Egypt
| | - Sidra Waheed
- Australian Centre for Research on Separation Science (ACROSS)School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
- ARC Centre of Excellence for Electromaterials Science (ACES) School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
| | - Brett Paull
- Australian Centre for Research on Separation Science (ACROSS)School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
- ARC Centre of Excellence for Electromaterials Science (ACES) School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
| | - Fernando Maya
- Australian Centre for Research on Separation Science (ACROSS)School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
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Kucherenko E, Kanateva A, Pirogov A, Kurganov A. Recent advances in the preparation of adsorbent layers for thin-layer chromatography combined with matrix-assisted laser desorption/ionization mass-spectrometric detection. J Sep Sci 2018; 42:415-430. [DOI: 10.1002/jssc.201800625] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/14/2018] [Accepted: 08/21/2018] [Indexed: 01/09/2023]
Affiliation(s)
| | - Anastasiia Kanateva
- Russian Academy of Sciences; A.V. Topchiev Institute of Petrochemical Synthesis; Moscow Russia
| | - Andrey Pirogov
- Faculty of Chemistry; M.V. Lomonosov Moscow State University; Moscow Russia
| | - Alexander Kurganov
- Russian Academy of Sciences; A.V. Topchiev Institute of Petrochemical Synthesis; Moscow Russia
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10
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Vergara-Barberán M, Mompó-Roselló Ó, Herrero-Martínez JM, Simó-Alfonso EF. Poly(ethylene glycol) diacrylate based monolithic capillary columns for the analysis of polar small solutes by capillary electrochromatography. J Sep Sci 2018; 41:2632-2639. [DOI: 10.1002/jssc.201800184] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/23/2018] [Accepted: 03/26/2018] [Indexed: 12/16/2022]
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11
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Lynch KB, Chen A, Liu S. Miniaturized high-performance liquid chromatography instrumentation. Talanta 2017; 177:94-103. [PMID: 29108588 DOI: 10.1016/j.talanta.2017.09.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/04/2017] [Accepted: 09/06/2017] [Indexed: 12/26/2022]
Abstract
Miniaturized high performance liquid chromatography (HPLC) has attracted increasing attention for its potential in high-throughput analyses and point-of-care applications. In this review we highlight the recent advancements in HPLC system miniaturization. We focus on the major components that constitute these instruments along with their respective advantages and drawbacks as well as present a few representative miniaturized HPLC systems. We discuss briefly some of the applications and also anticipate the future development trends of these instrumental platforms.
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Affiliation(s)
- Kyle B Lynch
- Department of Chemistry and Biochemistry, University of Oklahoma, USA.
| | - Apeng Chen
- Department of Chemistry and Biochemistry, University of Oklahoma, USA
| | - Shaorong Liu
- Department of Chemistry and Biochemistry, University of Oklahoma, USA
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12
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Shiryaeva VE, Popova TP, Korolev AA, Kanat’eva AY, Kurganov AA. Polar stationary phases based on poly(oligo ethylene glycol)diacrylates for capillary gas chromatography. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2017. [DOI: 10.1134/s0036024417080325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Kurganov A, Kanateva A, Shiryaeva V, Popova T, Korolev A. Investigation of poly[oligo(ethylene glycol)diacrylates] as potential stationary phases in GC. J Sep Sci 2017; 40:3675-3681. [DOI: 10.1002/jssc.201700413] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 06/02/2017] [Accepted: 07/02/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Alexander Kurganov
- Topchiev institute of petrochemical synthesis RAS; Moscow Russian Federation
| | - Anastasiya Kanateva
- Topchiev institute of petrochemical synthesis RAS; Moscow Russian Federation
| | - Valeriya Shiryaeva
- Topchiev institute of petrochemical synthesis RAS; Moscow Russian Federation
| | - Tamara Popova
- Topchiev institute of petrochemical synthesis RAS; Moscow Russian Federation
| | - Alexander Korolev
- Topchiev institute of petrochemical synthesis RAS; Moscow Russian Federation
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Liu C, Li H, Wang Q, Crommen J, Zhou H, Jiang Z. Preparation and evaluation of 400μm I.D. polymer-based hydrophilic interaction chromatography monolithic columns with high column efficiency. J Chromatogr A 2017. [PMID: 28629939 DOI: 10.1016/j.chroma.2017.06.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The quest for higher column efficiency is one of the major research areas in polymer-based monolithic column fabrication. In this research, two novel polymer-based HILIC monolithic columns with 400μm I.D.×800μm O.D. were prepared based on the thermally initiated co-polymerization of N,N-dimethyl-N-(3-methacrylamidopropyl)-N-(3-sulfopropyl) ammonium betaine (SPP) and ethylene glycol dimethacrylate (EDMA) or N,N'-methylenebisacrylamide (MBA). In order to obtain a satisfactory performance in terms of column permeability, mechanical stability, efficiency and selectivity, the polymerization parameters were systematically optimized. Column efficiencies as high as 142, 000 plates/m and 120, 000 plates/m were observed for the analysis of neutral compounds at 0.6mm/s on the poly(SPP-co-MBA) and poly(SPP-co-EDMA) monoliths, respectively. Furthermore, the Van Deemter plots for thiourea on the two monoliths were compared with that on a commercial silica based ZIC-HILIC column (3.5μm, 200Å, 150mm×300μm I.D.) using ACN/H2O (90/10, v/v) as the mobile phase at room temperature. It was noticeable that the Van Deemter curves for both monoliths, particularly the poly(SPP-co-MBA) monolith, are significantly flatter than that obtained for the ZIC-HILIC column, which indicates that in spite of their larger internal diameters, they yield better overall efficiency, with less peak dispersion, across a much wider range of usable linear velocities. A clearly better separation performance was also observed for nucleobases, nucleosides, nucleotides and small peptides on the poly(SPP-co-MBA) monolith compared to the ZIC-HILIC column. It is particularly worth mentioning that these 400μm I.D. polymer-based HILIC monolithic columns exhibit enhanced mechanical strength owing to the thicker capillary wall of the fused-silica capillaries.
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Affiliation(s)
- Chusheng Liu
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Haibin Li
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Qiqin Wang
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Jacques Crommen
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou 510632, China; Department of Pharmaceutical Sciences, University of Liege, CHU B36, B-4000 Liege, Belgium
| | - Haibo Zhou
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Zhengjin Jiang
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou 510632, China.
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Lynch KB, Chen A, Yang Y, Lu JJ, Liu S. High-performance liquid chromatographic cartridge with gradient elution capability coupled with UV absorbance detector and mass spectrometer for peptide and protein analysis. J Sep Sci 2017; 40:2752-2758. [PMID: 28514057 DOI: 10.1002/jssc.201700185] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/05/2017] [Accepted: 05/08/2017] [Indexed: 02/05/2023]
Abstract
We discuss the construction and performance of a high-performance liquid chromatography cartridge that we developed that resulted from a culmination of previous research. We have recently developed an innovative approach to creating gradient elutions using dual electroosmotic pumps and a series of three valves. This method has been proved to be the most reproducible and robust in producing gradients compared to our previously tested methods. Using this approach, we have assembled a high-performance liquid chromatography cartridge powered and controlled via a computer. We have successfully coupled the cartridge with an ultraviolet absorbance detector and a mass spectrometer for separating complex protein/peptide samples. The cartridge is readily coupled with other detectors such as electrochemical detector and laser-induced fluorescence detector.
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Affiliation(s)
- Kyle B Lynch
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
| | - Apeng Chen
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
| | - Yu Yang
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
| | - Joann J Lu
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
| | - Shaorong Liu
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
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Capillary methacrylate-based monoliths by grafting from/to γ-ray polymerization on a tentacle-type reactive surface for the liquid chromatographic separations of small molecules and intact proteins. J Chromatogr A 2017; 1498:46-55. [DOI: 10.1016/j.chroma.2016.11.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/20/2016] [Accepted: 11/21/2016] [Indexed: 12/13/2022]
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17
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Kip Ç, Demir C, Tuncel A. One pot synthesis of carboxyl functionalized-polyhedral oligomeric siloxane based monolith via photoinitiated thiol-methacrylate polymerization for nano-hydrophilic interaction chromatography. J Chromatogr A 2017; 1502:14-23. [PMID: 28457489 DOI: 10.1016/j.chroma.2017.04.044] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 03/27/2017] [Accepted: 04/23/2017] [Indexed: 01/06/2023]
Abstract
A hybrid monolith exhibiting almost retention independent separation performance in hydrophilic interaction chromatography (HILIC) was obtained by one-pot photoinitiated thiol-methacrylate polymerization. Polyhedral oligomeric silsesquioxane containing methacrylate units (POSS-MA) was used as the main monomer and crosslinking agent, together with a hydrophilic ligand with two carboxyl groups, mercaptosuccinic acid (MSA) as the thiol agent and chromatographic ligand. The isocratic separation of nucleosides, nucleotides and organic acids on MSA attached-poly(POSS-MA) monolith was investigated in HILIC mode. The van-Deemter plots for obtained for nucleosides, nucleotides and benzoic acids clearly showed that there were two regions in each graph with two different slopes in the studied range of linear flow rate (i.e. 0.2-4.3mm/s). The slope of plate height-linear velocity curve was so small in the low linear velocity region between 0.2-2.1mm/s while the slope in high linear velocity region between 2.1-4.3mm/s was so higher with respect to the first region. The van-Deemter plots sketched for all analyte grous used in HILIC mode obeyed this tendency Almost "retention independent plate height behavior" was demonstrated in HILIC, using nucleotides, nucleotides or benzoic acids as the analytes in the linear velocity range of 0.2-2.1mm/s. This behavior was explained by the porous structure of the synthesized monolith facilitating the convective transport of analytes. The variation of plate height was not retention-independent within high linear velocity range (>3.2mm/s) when nucleosides were separated in HILIC mode.
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Affiliation(s)
- Çiğdem Kip
- Chemical Engineering Department, Hacettepe University, 06800, Ankara, Turkey
| | - Cihan Demir
- Chemical Engineering Department, Hacettepe University, 06800, Ankara, Turkey
| | - Ali Tuncel
- Chemical Engineering Department, Hacettepe University, 06800, Ankara, Turkey; Division of Nanotechnology and Nanomedicine, Hacettepe University, 06800 Ankara, Turkey.
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18
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Rathnasekara R, Khadka S, Jonnada M, El Rassi Z. Polar and nonpolar organic polymer-based monolithic columns for capillary electrochromatography and high-performance liquid chromatography. Electrophoresis 2016; 38:60-79. [DOI: 10.1002/elps.201600356] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/04/2016] [Accepted: 09/13/2016] [Indexed: 12/16/2022]
Affiliation(s)
| | | | - Murthy Jonnada
- Department of Chemistry; Oklahoma State University; Stillwater OK USA
| | - Ziad El Rassi
- Department of Chemistry; Oklahoma State University; Stillwater OK USA
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19
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Property evaluations and application for separation of small molecules of a nanodiamond-polymer composite monolithic column. Talanta 2016; 154:237-48. [DOI: 10.1016/j.talanta.2016.03.069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 03/16/2016] [Accepted: 03/19/2016] [Indexed: 11/19/2022]
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20
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Urban J. Current trends in the development of porous polymer monoliths for the separation of small molecules. J Sep Sci 2015; 39:51-68. [DOI: 10.1002/jssc.201501011] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 09/17/2015] [Accepted: 09/18/2015] [Indexed: 01/15/2023]
Affiliation(s)
- Jiří Urban
- Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
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Sharma S, Plistil A, Barnett HE, Tolley HD, Farnsworth PB, Stearns SD, Lee ML. Hand-Portable Gradient Capillary Liquid Chromatography Pumping System. Anal Chem 2015; 87:10457-61. [DOI: 10.1021/acs.analchem.5b02583] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Alex Plistil
- VICI Valco Instruments, Houston, Texas 77055, United States
| | - Hal E. Barnett
- VICI Valco Instruments, Houston, Texas 77055, United States
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Sharma S, Tolley LT, Tolley HD, Plistil A, Stearns SD, Lee ML. Hand-portable liquid chromatographic instrumentation. J Chromatogr A 2015; 1421:38-47. [PMID: 26592464 DOI: 10.1016/j.chroma.2015.07.119] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 07/29/2015] [Accepted: 07/31/2015] [Indexed: 01/24/2023]
Abstract
Over the last four decades, liquid chromatography (LC) has experienced an evolution to smaller columns and particles, new stationary phases and low flow rate instrumentation. However, the development of person-portable LC has not followed, mainly due to difficulties encountered in miniaturizing pumps and detectors, and in reducing solvent consumption. The recent introduction of small, non-splitting pumping systems and UV-absorption detectors for use with capillary columns has finally provided miniaturized instrumentation suitable for high-performance hand-portable LC. Fully integrated microfabricated LC still remains a significant challenge. Ion chromatography (IC) has been successfully miniaturized and applied for field analysis; however, applications are mostly limited to inorganic and small organic ions. This review covers advancements that make possible more rapid expansion of portable forms of LC and IC.
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Affiliation(s)
- Sonika Sharma
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA
| | - Luke T Tolley
- Department of Chemistry, Southern Illinois University, Carbondale, IL 62901, USA
| | - H Dennis Tolley
- Department of Statistics, Brigham Young University, Provo, UT 84602, USA
| | - Alex Plistil
- VICI Valco Instruments, Houston, Texas 77055, USA
| | | | - Milton L Lee
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA.
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Sharma S, Tolley HD, Farnsworth PB, Lee ML. LED-based UV absorption detector with low detection limits for capillary liquid chromatography. Anal Chem 2014; 87:1381-6. [PMID: 25496031 DOI: 10.1021/ac504275m] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A 260 nm deep UV LED-based absorption detector with low detection limits was developed and integrated with a small nanoflow pumping system. The detector is small in size (5.2 × 3.0 cm) and weighs only 85 g (without electronics). This detector was specifically designed and optimized for on-column detection to minimize extra-column band broadening. No optical reference was included due to the low drift in the signal. Two ball lenses, one of which was integrated with the LED, were used to increase light throughput through the capillary column. Stray light was minimized by the use of a band-pass filter and an adjustable slit. Signals down to the parts per billion level (nanomolar) were easily detected with a short-term noise level of 4.4 μAU, confirming a low limit of detection and low noise. The detection limit for adenosine-5'-monophosphate was 230 times lower than any previously reported values. Good linearities (3 orders of magnitude) were obtained using sodium anthraquinone-2-sulfonate, adenosine-5'-monophosphate, dl-tryptophan, and phenol. The LC system was demonstrated by performing isocratic separation of phenolic compounds using a monolithic capillary column (16.5 cm × 150 μm i.d.) synthesized from poly(ethylene glycol) diacrylate.
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Affiliation(s)
- Sonika Sharma
- Department of Chemistry & Biochemistry, Brigham Young University , Provo, Utah 84602, United States
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Svec F, Lv Y. Advances and Recent Trends in the Field of Monolithic Columns for Chromatography. Anal Chem 2014; 87:250-73. [DOI: 10.1021/ac504059c] [Citation(s) in RCA: 279] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Frantisek Svec
- International
Research Center
for Soft Matter, Beijing University of Chemical Technology, 100029 Beijing, China
| | - Yongqin Lv
- International
Research Center
for Soft Matter, Beijing University of Chemical Technology, 100029 Beijing, China
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