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Mutaz E. Salih, Aqel A, Abdulkhair BY, Obbed MS, ALOthman ZA, Badjah-Hadj-Ahmed Y, Abdulaziz MA. Preparation and Characterization of Glycidyl Polymethacrylate Monolith Column and its Application for Simultaneous Determination of Paracetamol and Chlorzoxazone in Their Combined Pharmaceutical Formulations. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820110106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Aqel A, Alzahrani SS, Al-Rifai A, Alturkey M, Yusuf K, ALOthman ZA, Badjah-Hadj-Ahmed AY. Determination of Monoaromatic Hydrocarbons in Water Samples by Nano-Liquid Chromatography using a Composite Carbon Nanotubes- Lauryl Polymethacrylate Capillary Monolithic Column. CURR ANAL CHEM 2020. [DOI: 10.2174/1573411014666180619144741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
This work reports a green analytical method for the determination of organic
environmental pollutants using nano-liquid chromatography with a self-made column for rapid, sensitive,
inexpensive and efficient analysis of BTX pollutants in water. The applications of monolithic nanoscale
columns for quantitative analysis of environmental real samples are very limited in the literature.
Methods:
A capillary column containing a composite of multi-walled carbon nanotubes incorporated
into a lauryl methacrylate-co-ethylene dimethacrylate porous monolithic polymer was fabricated for
the determination of BTX pollutants in real water samples.
Results:
Baseline separation was accomplished at 0.4 µL/min flow rate with UV-detection set at 208
nm. Under the optimum conditions, the calibration curves were validated over the range of 1.0-500
µg/L with R2 more than 0.9992. The detection limits of benzene, toluene, o-xylene and m/p-xylene
were 0.25, 0.05, 0.075 and 0.05 µg/L, respectively. After a simple extraction process with a theoretical
preconcentration factor equal to 200, the recovery values in Milli-Q, tap and sea water samples were
found to be ranged from 84.85 to 97.84% with %RSD less than 7.5. Furthermore, we reported a comparison
between our prepared composite column with a commercial C18 silica based column which is
the most used in such analytical field. Each column demonstrated its advantages from different analytical
aspects.
Conclusion:
The application of monolithic columns and nano-scale LC for routine analysis of environmental
samples is very promising as the use of monolithic capillary columns offers several advantages
over conventional scale particulate packed columns.
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Affiliation(s)
- Ahmad Aqel
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Soad S. Alzahrani
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Asma’a Al-Rifai
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Mohammed Alturkey
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Kareem Yusuf
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zeid A. ALOthman
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Albekairi N, Aqel A, ALOthman ZA. Simultaneous Capillary Liquid Chromatography Determination of Drugs in Pharmaceutical Preparations Using Tunable Platforms of Polymethacrylate Monolithic Columns Modified with Octadecylamine. Chromatographia 2019. [DOI: 10.1007/s10337-019-03739-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Cui X, Shao H, Song Y, Yang S, Wang F, Liu H. Preparation of highly interconnected porous polymer microbeadsviasuspension polymerization of high internal phase emulsions for fast removal of oil spillage from aqueous environments. RSC Adv 2019; 9:25730-25738. [PMID: 35530083 PMCID: PMC9070402 DOI: 10.1039/c9ra05220h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 08/11/2019] [Indexed: 01/31/2023] Open
Abstract
In this paper, we report on the fabrication of highly interconnected porous poly(butyl acrylate-co-stearyl methacrylate-co-styrene-co-divinylbenzene) (P(BA–SMA–St–DVB)) monoliths and microbeads via the polymerization of high internal phase emulsions (HIPEs) and double emulsions by using a 75% to 85% internal water phase. The morphology and specific surface area were characterized with scanning electron microscopy (SEM) and nitrogen adsorption/desorption measurements, respectively. The oil absorbency, including oil absorption, oil absorption rate and oil retention ratio of as-prepared resins (both monoliths and microbeads), was studied by using kerosene and carbon tetrachloride as analogues of oil pollutants. Thermoanalysis was also carried out to analyze the oil absorption mechanism. The results showed that the resin had a good oil absorption efficiency of aliphatic hydrocarbon and chlorohydrocarbon. The best mass-based absorption capacity of the microbeads towards kerosene and carbon tetrachloride is 8.52 and 20.82 times its own weight, respectively, which is higher than those of the corresponding polyHIPE monoliths. Meanwhile, these microbeads of average 320 microns in diameter have good thermal stability and can be easily collected and recycled by a simple filtration washing method. Fabrication of highly interconnected porous (P(BA–SMA–St–DVB)) monoliths and microbeads for fast removal of oil spillage.![]()
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Affiliation(s)
- Xiaoling Cui
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Hong Shao
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Yuanrui Song
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Song Yang
- Key Laboratory of Tobacco Chemistry
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou
- P. R. China
| | - Fengwei Wang
- Department of Electronic Packaging Technology
- School of Materials Science and Technology
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Huarong Liu
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- P. R. China
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Salih ME, Aqel A, Abdulkhair BY, Alothman ZA, Abdulaziz MA, Badjah-Hadj-Ahmed AY. Simultaneous Determination of Paracetamol and Chlorzoxazone in Their Combined Pharmaceutical Formulations by Reversed-phase Capillary Liquid Chromatography Using a Polymethacrylate Monolithic Column. J Chromatogr Sci 2018; 56:819-827. [DOI: 10.1093/chromsci/bmy058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 05/23/2018] [Indexed: 11/14/2022]
Affiliation(s)
- Mutaz E Salih
- Chemistry Department, College of Science, Sudan University for Science and Technology, Khartoum, Sudan
- Department of Chemistry-Hurrymilla, College of Science and Humanities, Shaqra University, Shaqra, Saudi Arabia
| | - Ahmad Aqel
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Babiker Y Abdulkhair
- Department of Chemistry, College of Science, Al-Imam Muhammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
| | - Zeid A Alothman
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohamad A Abdulaziz
- Chemistry Department, College of Science, Sudan University for Science and Technology, Khartoum, Sudan
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Obbed MS, Aqel A, Al Othman Z, Badjah-Hadj-Ahmed AY. Preparation, characterization and application of polymethacrylate-based monolithic columns for fast and efficient separation of alkanes, alcohols, alkylbenzenes and isomeric mixtures by gas chromatography. J Chromatogr A 2018; 1555:89-99. [DOI: 10.1016/j.chroma.2018.04.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 04/19/2018] [Accepted: 04/22/2018] [Indexed: 11/24/2022]
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Al-Rifai A, Aqel A, Wahibi LA, ALOthman ZA, Badjah-Hadj-Ahmed AY. Carbon nanotube-based benzyl polymethacrylate composite monolith as a solid phase extraction adsorbent and a stationary phase material for simultaneous extraction and analysis of polycyclic aromatic hydrocarbon in water. J Chromatogr A 2018; 1535:17-26. [DOI: 10.1016/j.chroma.2018.01.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 01/02/2018] [Accepted: 01/03/2018] [Indexed: 12/31/2022]
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Xu S, Wang Y, Tang Y, Ji Y. A protein-based mixed selector chiral monolithic stationary phase in capillary electrochromatography. NEW J CHEM 2018. [DOI: 10.1039/c8nj02309c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mixed selector CSP combines the enantioselectivities of both individual proteins, thus expanding their application range practically.
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Affiliation(s)
- Shujuan Xu
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Yuying Wang
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Yixia Tang
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Yibing Ji
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
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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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Yusuf K, Aqel A, Dyab AKF, ALOthman ZA, Badjah-Hadj-Ahmed AY. Effect of sporopollenin microparticle incorporation into the hexyl methacrylate-based monolithic columns for capillary liquid chromatography. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1243559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Kareem Yusuf
- Department of Chemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Ahmad Aqel
- Department of Chemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Amro K. F. Dyab
- Department of Chemistry, Faculty of science, Minia University, Minia, Egypt
- Surfactant and Colloid Group, Department of Chemistry, University of Hull, Hull, UK
| | - Zeid A. ALOthman
- Department of Chemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
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Novel Monolithic Stationary Phase with Surface-Grafted Triphenyl Selector for Reversed-Phase Capillary Electrochromatography. Chromatographia 2016. [DOI: 10.1007/s10337-016-3156-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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A novel polymeric monolith prepared with multi-acrylate crosslinker for retention-independent efficient separation of small molecules in capillary liquid chromatography. Anal Chim Acta 2015; 883:90-8. [DOI: 10.1016/j.aca.2015.04.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 03/31/2015] [Accepted: 04/01/2015] [Indexed: 11/18/2022]
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Preparation and characterization of alkyl methacrylate-based monolithic columns for capillary gas chromatography applications. J Chromatogr A 2013; 1301:200-8. [PMID: 23806355 DOI: 10.1016/j.chroma.2013.05.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 05/26/2013] [Accepted: 05/27/2013] [Indexed: 11/21/2022]
Abstract
Gas chromatography (GC) is considered the least common application of both polymer and silica-based monolithic columns. This study describes the fabrication of alkyl methacrylate monolithic materials for use as stationary phases in capillary gas chromatography. Following the deactivation of the capillary surface with 3-(trimethoxysilyl)propyl methacrylate (TMSM), the monoliths were formed by the co-polymerization of either hexyl methacrylate (HMA) or lauryl methacrylate (LMA) with different percentage of ethylene glycol dimethacrylate (EDMA) in presence of an initiator (azobisisobutyronitrile, AIBN) and a mixture of porogens include 1-propanol, 1,4-butanediol and water. The monoliths were prepared in 500mm length capillaries possessing inner diameters of 250μm. The efficiencies of the monolithic columns for low molecular weight compounds significantly improved as the percentage of crosslinker was increased, because of the greater proportion of pores less than 50nm. The columns containing lower percentages of crosslinker were able to rapidly separate a series of 8 alkane members in 0.7min, but the separation was less efficient for the light alkanes. Columns prepared with the lauryl methacrylate monomer yielded a different morphology for the monolith-interconnected channels. The channels were more branched, which increased the separation time, and unlike the other columns, allowed for temperature programming.
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Aqel A, ALOthman ZA, Yusuf K, Badjah-Hadj-Ahmed AY, Alwarthan AA. Preparation and Evaluation of Benzyl Methacrylate Monoliths for Capillary Chromatography. J Chromatogr Sci 2013; 52:201-10. [DOI: 10.1093/chromsci/bmt011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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