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Wang J, Qiao JQ, Zheng WJ, Lian HZ. Effect of ionic liquids as mobile phase additives on retention behaviors of G-quadruplexes in reversed-phase high performance liquid chromatography. J Chromatogr A 2024; 1715:464604. [PMID: 38176351 DOI: 10.1016/j.chroma.2023.464604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/06/2024]
Abstract
G-quadruplexes (G4s) play an important role in a variety of biological processes and have extensive application prospects. Due to the significance of G4s in physiology and biosensing, studies on G4s have attracted much attention, stimulating the development or improvement of methods for G4 structures and polymorphism analysis. In this work, ionic liquids (ILs) were involved as mobile phase additives in reversed-phase high performance liquid chromatography (RP-HPLC) to analyse G4s with various conformations for the first time. How ILs affected the retention behaviors of G4s was investigated comprehensively. It was found that the addition of ILs markedly enhanced G4 retention, along with obvious amelioration on chromatographic peak shapes and separation. The influence of pH of mobile phase and types of ILs were also included in order to acquire an in-depth understanding. It appeared that the effect of ILs on G4 retention behaviors was the result of a combination of various interactions between G4s with the hydrophobic stationary phase and with the IL-containing mobile phase, where ion pair mechanism and enhanced hydrophobic interaction dominated. The findings of this work revealed that ILs could effectively improve the separation of G4s in RP-HPLC, which was conducive to G4 structural analysis, especially for G4s polymorphism elucidation.
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Affiliation(s)
- Ju Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
| | - Jun-Qin Qiao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China.
| | - Wei-Juan Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
| | - Hong-Zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China.
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2
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Sun C, Zhang T, Zhou Y, Liu ZF, Zhang Y, Bian Y, Feng XS. Triclosan and related compounds in the environment: Recent updates on sources, fates, distribution, analytical extraction, analysis, and removal techniques. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 870:161885. [PMID: 36731573 DOI: 10.1016/j.scitotenv.2023.161885] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 01/18/2023] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Triclosan (TCS) has been widely used in daily life because of its broad-spectrum antibacterial activities. The residue of TCS and related compounds in the environment is one of the critical environmental safety problems, and the pandemic of COVID-19 aggravates the accumulation of TCS and related compounds in the environment. Therefore, detecting TCS and related compound residues in the environment is of great significance to human health and environmental safety. The distribution of TCS and related compounds are slightly different worldwide, and the removal methods also have advantages and disadvantages. This paper summarized the research progress on the source, distribution, degradation, analytical extraction, detection, and removal techniques of TCS and related compounds in different environmental samples. The commonly used analytical extraction methods for TCS and related compounds include solid-phase extraction, liquid-liquid extraction, solid-phase microextraction, liquid-phase microextraction, and so on. The determination methods include liquid chromatography coupled with different detectors, gas chromatography and related methods, sensors, electrochemical method, capillary electrophoresis. The removal techniques in various environmental samples mainly include biodegradation, advanced oxidation, and adsorption methods. Besides, both the pros and cons of different techniques have been compared and summarized, and the development and prospect of each technique have been given.
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Affiliation(s)
- Chen Sun
- School of Pharmacy, China Medical University, Shenyang 110122, China; Department of Pharmaceutics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Ting Zhang
- Department of Thyroid Surgery, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yu Zhou
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Zhi-Fei Liu
- School of Pharmacy, China Medical University, Shenyang 110122, China
| | - Yuan Zhang
- School of Pharmacy, China Medical University, Shenyang 110122, China.
| | - Yu Bian
- School of Pharmacy, China Medical University, Shenyang 110122, China.
| | - Xue-Song Feng
- School of Pharmacy, China Medical University, Shenyang 110122, China.
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3
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Axente RE, Stan M, Chitescu CL, Nitescu VG, Vlasceanu AM, Baconi DL. Application of Ionic Liquids as Mobile Phase Additives for Simultaneous Analysis of Nicotine and Its Metabolite Cotinine in Human Plasma by HPLC-DAD. Molecules 2023; 28:molecules28041563. [PMID: 36838551 PMCID: PMC9960693 DOI: 10.3390/molecules28041563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Nicotine and cotinine are very polar basic molecules, which makes it difficult to analyze them by reversed-phase liquid chromatography (RPLC), especially in biological samples. Additives with an ionic character have been traditionally used in RPLC as silanol suppressors. The aim of our study was to investigate the potential of selected ionic liquids in improving chromatographic performance in comparison with common additives. The experimental design was conducted using the following ionic liquids as the mobile phase modifiers: 1-butyl-3-methylimidazolium tetrafluoroborate, BMIM[BF4] and 1-butyl-3-methylimidazolium hexafluorophosphate BMIM[PF6], with a C18 chromatographic column. The separation of these alkaloids on silica-based RPLC stationary phases was successfully conducted by the addition of BMIM[BF4] in an acetonitrile:phosphate-buffer-based mobile phase in a pH range of 2.3-5.2. The presented chromatographic method can be used as alternative for monitoring studies or pharmacokinetic application necessary for the evaluation of tobacco smoke exposure.
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Affiliation(s)
- Roxana E. Axente
- Faculty of Medicine and Pharmacy, Dunarea de Jos University of Galati, 800010 Galati, Romania
| | - Miriana Stan
- Department of Toxicology, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
- Correspondence:
| | - Carmen L. Chitescu
- Faculty of Medicine and Pharmacy, Dunarea de Jos University of Galati, 800010 Galati, Romania
| | - Viorela G. Nitescu
- Ward ATI—Toxicology, Pediatric Clinic 2, Emergency Clinical Hospital for Children Grigore Alexandrescu, 011743 Bucharest, Romania
| | - Ana-Maria Vlasceanu
- Department of Toxicology, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
| | - Daniela L. Baconi
- Department of Toxicology, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
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4
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Tereba-Mamani CJ, Janczuk MA, Ruiz-Angel MJ, García-Alvarez-Coque MC. Aqueous liquid chromatography with mobile phases of sodium dodecyl sulphate and ionic liquid. J Chromatogr A 2023; 1689:463740. [PMID: 36580766 DOI: 10.1016/j.chroma.2022.463740] [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: 11/24/2022] [Revised: 12/14/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
In conventional reversed-phase liquid chromatography (RPLC) with hydro-organic solvents, basic cationic solutes yield retained, broad, asymmetric peaks, owing to their interaction with free anionic silanols in the stationary phase. RPLC mobile phases to which the anionic surfactant sodium dodecyl sulphate (SDS), or an ionic liquid (IL) are added, have been proposed as solutions, since these additives are able to block the silanol effect thus improving the chromatographic performance. With these additives, it is however necessary to increase the elution strength by adding an organic solvent, such as an alcohol or acetonitrile. A novel aqueous liquid chromatographic mode (in the absence of organic solvent) is here proposed, where the mobile phases contain only a mixture of aqueous solutions of SDS and an IL derived from 1-alkyl-3-methylimidazolium associated to chloride, both environmentally friendly. When these reagents are added, the anionic surfactant adsorbed on the stationary phase is able to attract the cationic solutes, whereas the adsorbed IL cation repels them. The combination of both effects (attraction and repulsion) allows the modulation of retention, by varying the IL/SDS ratio. Given the character of the additives, a type of green liquid chromatography is achieved. In this work, the chromatographic behavior of six basic compounds of pharmaceutical interest, the β-adrenoceptor antagonists acebutolol, atenolol, carteolol, metroprolol, oxprenolol and propranolol, is examined. In order to assess the chromatographic behavior of the mixed mobile phases containing SDS and IL, changes in retention, peak profile and resolution of mixtures of the analytes were explored at varying concentration of the additives.
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Affiliation(s)
- C J Tereba-Mamani
- Departament de Química Analítica, Universitat de València, c/Dr. Moliner 50, Burjassot, Spain
| | - M A Janczuk
- Departament de Química Analítica, Universitat de València, c/Dr. Moliner 50, Burjassot, Spain
| | - M J Ruiz-Angel
- Departament de Química Analítica, Universitat de València, c/Dr. Moliner 50, Burjassot, Spain
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5
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Sun Z, Zheng L, Zhang ZY, Cong Y, Wang M, Wang X, Yang J, Liu Z, Huai Z. Molecular Modelling of Ionic Liquids: Situations When Charge Scaling Seems Insufficient. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020800. [PMID: 36677859 PMCID: PMC9865557 DOI: 10.3390/molecules28020800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
Charge scaling as an effective solution to the experiment-computation disagreement in molecular modelling of ionic liquids (ILs) could bring the computational results close to the experimental reference for various thermodynamic properties. According to the large-scale benchmark calculations of mass density, solvation, and water-ILs transfer-free energies in our series of papers, the charge-scaling factor of 0.8 serves as a near-optimal option generally applicable to most ILs, although a system-dependent parameter adjustment could be attempted for further improved performance. However, there are situations in which such a charge-scaling treatment would fail. Namely, charge scaling cannot really affect the simulation outcome, or minimally perturbs the results that are still far from the experimental value. In such situations, the vdW radius as an additional adjustable parameter is commonly tuned to minimize the experiment-calculation deviation. In the current work, considering two ILs from the quinuclidinium family, we investigate the impacts of this vdW-scaling treatment on the mass density and the solvation/partition thermodynamics in a fashion similar to our previous charge-scaling works, i.e., scanning the vdW-scaling factor and computing physical properties under these parameter sets. It is observed that the mass density exhibits a linear response to the vdW-scaling factor with slopes close to -1.8 g/mL. By further investigating a set of physiochemically relevant temperatures between 288 K and 348 K, we confirm the robustness of the vdW-scaling treatment in the estimation of bulk properties. The best vdW-scaling parameter for mass density would worsen the computation of solvation/partition thermodynamics, and a marginal decrease in the vdW-scaling factor is considered as an intermediate option balancing the reproductions of bulk properties and solvation thermodynamics. These observations could be understood in a way similar to the charge-scaling situation. i.e., overfitting some properties (e.g., mass density) would degrade the accuracy of the other properties (e.g., solvation free energies). Following this principle, the general guideline for applying this vdW-tuning protocol is by using values between the density-derived choice and the solvation/partition-derived solution. The charge and current vdW scaling treatments cover commonly encountered ILs, completing the protocol for accurate modelling of ILs with fixed-charge force fields.
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Affiliation(s)
- Zhaoxi Sun
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Correspondence: (Z.S.); (X.W.); (Z.H.)
| | - Lei Zheng
- NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai 200062, China
- Department of Chemistry, New York University, New York, NY 10003, USA
| | - Zuo-Yuan Zhang
- College of Physical Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Yalong Cong
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Mao Wang
- NCS Testing Technology Co., Ltd., No. 13, Gaoliangqiao Xiejie, Beijing 100081, China
| | - Xiaohui Wang
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Beijing Leto Laboratories Co., Ltd., Beijing 100083, China
- Correspondence: (Z.S.); (X.W.); (Z.H.)
| | - Jingjing Yang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Zhirong Liu
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhe Huai
- XtalPi-AI Research Center, 7F, Tower A, Dongsheng Building, No.8, Zhongguancun East Road, Beijing 100083, China
- Correspondence: (Z.S.); (X.W.); (Z.H.)
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6
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Molecular modelling of ionic liquids: Physical properties of species with extremely long aliphatic chains from a near-optimal regime. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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7
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Quantitative evaluation of reversed-phase packing material based on calcium carbonate microspheres modified with an alternating copolymer. J Chromatogr A 2022; 1677:463294. [PMID: 35809518 DOI: 10.1016/j.chroma.2022.463294] [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: 01/08/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 11/24/2022]
Abstract
Considering the vulnerability of silica gel to alkaline mobile phases, a highly alkaline stable stationary phase for HPLC is required to separate basic compounds with high separation efficiency. To address this issue, we have developed a high alkaline stable packing material (CaCO3-PMAcO) based on mesoporous calcium carbonate microspheres modified with poly(maleic acid-alt-1-octadecene). In this study, we report further investigation of the separation performance of CaCO3-PMAcO column by systematically evaluating the effects of particle size and chromatographic conditions. Based on the theory of the van Deemter equation, the separation efficiency was related to the size of CaCO3-PMAcO particles (2.9 - 5.7 µm). The evaluation of thermodynamics of retention by changing the column temperature from 20 °C to 45 °C implied that the retention mode was dominated by hydrophobic interaction associated with the exothermic enthalpy changes (-11.1 to -12.5 kJ/mol). The results of column selectivity tests revealed that the CaCO3-PMAcO column had hydrophobic selectivity comparable to C18 silica gel columns (αP/B; CaCO3-PMAcO column: 1.53, C18 column: 1.69), and higher shape/steric selectivity (αTri/Ter; CaCO3-PMAcO column: 1.56, C18 column: 0.955). In practice, the CaCO3-PMAcO column could be applied to the separation of not only alkylbenzenes and polycyclic aromatic hydrocarbons, but also to basic tricyclic antidepressants by using an alkaline mobile phase (pH 12).
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8
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Lis H, Paszkiewicz M, Godlewska K, Maculewicz J, Kowalska D, Stepnowski P, Caban M. Ionic liquid-based functionalized materials for analytical chemistry. J Chromatogr A 2022; 1681:463460. [DOI: 10.1016/j.chroma.2022.463460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 11/25/2022]
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9
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Pankajkumar-Patel N, Peris-García E, Ruiz-Angel M, García-Alvarez-Coque M. Interactions of basic compounds with ionic liquids used as oils in microemulsion liquid chromatography. J Chromatogr A 2022; 1674:463142. [DOI: 10.1016/j.chroma.2022.463142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/10/2022] [Accepted: 05/10/2022] [Indexed: 11/27/2022]
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10
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Sun Z, Wang M, He Q, Liu Z. Molecular Modeling of Ionic Liquids: Force‐Field Validation and Thermodynamic Perspective from Large‐Scale Fast‐Growth Solvation Free Energy Calculations. ADVANCED THEORY AND SIMULATIONS 2022. [DOI: 10.1002/adts.202200274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zhaoxi Sun
- Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
| | - Mao Wang
- NCS Testing Technology Co., Ltd. No. 13, Gaoliangqiao Xiejie Beijing 100081 China
| | - Qiaole He
- AI Department of Enzymaster (Ningbo) Bio‐Engineering Co., Ltd. North Century Avenue 333 Ningbo 315100 China
| | - Zhirong Liu
- Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
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11
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Abstract
Ionic liquids (ILs) are non-molecular solvents; specifically, molten salts with low melting points, often below 100 °C and even below room temperature, thus allowing these solvents to remain liquid [...]
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12
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Ma X, Li J, Li X, Feng Z, Yang X, Liu J, Du Y. L-Histidinium Chiral Ionic Liquid Functionalized β-Cyclodextrin as Chiral Selector in Capillary Electrophoresis. J Chromatogr Sci 2021; 59:388-395. [PMID: 33479764 DOI: 10.1093/chromsci/bmaa115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 10/17/2020] [Accepted: 11/06/2020] [Indexed: 11/14/2022]
Abstract
Nowadays, ionic liquids (ILs) functionalized cyclodextrins (CDs) have drawn increasing attention in chiral separation. Herein, a novel β-CD derivative functionalized by L-histidinium IL, mono-6-deoxy-6-L-histidinium-β-cyclodextrin chloride (L-HMCDCl), was synthesized for the first time and utilized for enantioseparation of nefopam and chlorphenamine in capillary electrophoresis. The L-HMCDCl exhibited superior enantioselectivity compared with native β-CD. The effect of some key parameters such as chiral selector concentration, buffer pH and applied voltage on the enantioseparation was investigated in detail. In the interest of the chiral discrimination mechanism and the enhanced enantioselectivity of L-HMCDCl, molecular modeling with AutoDock was employed to study the interaction, which was in good agreement with experimental results.
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Affiliation(s)
- Xiaofei Ma
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jingtang Li
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Xiaoqi Li
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, P. R. China
| | - Zijie Feng
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Xuan Yang
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jie Liu
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yingxiang Du
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
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13
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14
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Influence of ionic liquids’ nature on chromatographic retention of benzimidazoles by RP HPLC. J LIQ CHROMATOGR R T 2020. [DOI: 10.1080/10826076.2020.1858315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Koel M, Kuhtinskaja M, Vaher M. Extraction of bioactive compounds from Catharanthus roseus and Vinca minor. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117438] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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16
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Tsyrenova A, Farooq MQ, Anthony SM, Mollaeian K, Li Y, Liu F, Miller K, Ren J, Anderson JL, Jiang S. Unique Orientation of the Solid-Solid Interface at the Janus Particle Boundary Induced by Ionic Liquids. J Phys Chem Lett 2020; 11:9834-9841. [PMID: 33170707 DOI: 10.1021/acs.jpclett.0c02813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This study reveals the unique role on Janus particles of the solid-solid interface at the boundary in determining particle interactions and assembly. In an aqueous ionic liquid (IL) solution, Janus spheres adopt intriguing orientations with their boundaries pinned on the glass substrate. It was further discovered that the orientation was affected by the particle amphiphilicity as well as the chemical structure and concentration of the IL. Further characterization suggests that the adsorption on the hydrophilic side is due to both an electrostatic interaction and hydrogen bonding, while adsorption on the hydrophobic side is due to hydrophobic attraction. Through the concerted interplay of all these interactions, the amphiphilic boundary may attract an excessive amount of IL cations, which guide the unique orientations of the Janus spheres. The results highlight the importance of the Janus boundary that has not been recognized previously. Adsorption at the solid-solid interfaces may inspire new applications in areas such as separation and catalysis.
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Affiliation(s)
- Ayuna Tsyrenova
- Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Muhammad Q Farooq
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Stephen M Anthony
- Department of Computational Biology and Biophysics, Sandia National Laboratories, Albuquerque, New Mexico 87123, United States
| | - Keyvan Mollaeian
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Yifan Li
- Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Fei Liu
- Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Kyle Miller
- Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Juan Ren
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Jared L Anderson
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Shan Jiang
- Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
- Division of Materials Science & Engineering, Ames National Laboratory, Ames, Iowa 50011, United States
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Yin Z, Zhang Y, Guan F, Yu H, Ma Y. Simultaneous separation and indirect ultraviolet detection of chlorate and perchlorate by pyridinium ionic liquids in reversed‐phase liquid chromatography. J Sep Sci 2020; 43:3868-3875. [DOI: 10.1002/jssc.202000690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/27/2020] [Accepted: 08/08/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Zhen‐jie Yin
- College of Chemistry and Chemical Engineering Harbin Normal University Harbin P. R. China
| | - Ya‐nan Zhang
- College of Chemistry and Chemical Engineering Harbin Normal University Harbin P. R. China
| | - Fu‐jing Guan
- College of Chemistry and Chemical Engineering Harbin Normal University Harbin P. R. China
| | - Hong Yu
- College of Chemistry and Chemical Engineering Harbin Normal University Harbin P. R. China
| | - Ya‐jie Ma
- College of Chemistry and Chemical Engineering Harbin Normal University Harbin P. R. China
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18
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Maciel EVS, Mejía-Carmona K, Jordan-Sinisterra M, da Silva LF, Vargas Medina DA, Lanças FM. The Current Role of Graphene-Based Nanomaterials in the Sample Preparation Arena. Front Chem 2020; 8:664. [PMID: 32850673 PMCID: PMC7431689 DOI: 10.3389/fchem.2020.00664] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/26/2020] [Indexed: 12/18/2022] Open
Abstract
Since its discovery in 2004 by Novoselov et al., graphene has attracted increasing attention in the scientific community due to its excellent physical and chemical properties, such as thermal/mechanical resistance, electronic stability, high Young's modulus, and fast mobility of charged atoms. In addition, other remarkable characteristics support its use in analytical chemistry, especially as sorbent. For these reasons, graphene-based materials (GBMs) have been used as a promising material in sample preparation. Graphene and graphene oxide, owing to their excellent physical and chemical properties as a large surface area, good mechanical strength, thermal stability, and delocalized π-electrons, are ideal sorbents, especially for molecules containing aromatic rings. They have been used in several sample preparation techniques such as solid-phase extraction (SPE), stir bar sorptive extraction (SBSE), magnetic solid-phase extraction (MSPE), as well as in miniaturized modes as solid-phase microextraction (SPME) in their different configurations. However, the reduced size and weight of graphene sheets can limit their use since they commonly aggregate to each other, causing clogging in high-pressure extractive devices. One way to overcome it and other drawbacks consists of covalently attaching the graphene sheets to support materials (e.g., silica, polymers, and magnetically modified supports). Also, graphene-based materials can be further chemically modified to favor some interactions with specific analytes, resulting in more efficient hybrid sorbents with higher selectivity for specific chemical classes. As a result of this wide variety of graphene-based sorbents, several studies have shown the current potential of applying GBMs in different fields such as food, biological, pharmaceutical, and environmental applications. Within such a context, this review will focus on the last five years of achievements in graphene-based materials for sample preparation techniques highlighting their synthesis, chemical structure, and potential application for the extraction of target analytes in different complex matrices.
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Affiliation(s)
| | | | | | | | | | - Fernando Mauro Lanças
- Laboratory of Chromatography (CROMA), São Carlos Institute of Chemistry (IQSC), University of São Paulo, São Carlos, Brazil
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19
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Guo Y, Yin ZJ, Sun YM, Yu H. Separation and indirect ultraviolet detection of common fluorine-containing anions by ionic liquids in reversed-phase chromatography. J LIQ CHROMATOGR R T 2020. [DOI: 10.1080/10826076.2020.1769649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Yuan Guo
- College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, China
| | - Zhen-jie Yin
- College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, China
| | - Yi-meng Sun
- College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, China
| | - Hong Yu
- College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, China
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21
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Hydrophilic Liquid Chromatography versus Reversed-Phase Liquid Chromatography in the Absence and the Presence of 1-Hexyl-3-methylimidazolium Chloride for the Analysis of Basic Compounds. SEPARATIONS 2020. [DOI: 10.3390/separations7020030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In reversed-phase liquid chromatography (RPLC), positively charged basic compounds yield broad and asymmetric peaks, as a result of ionic interactions with free silanols that remain on conventional silica-based columns. Diverse solutions have been proposed to mask the silanophilic activity, which is translated to an improved peak shape. In this work, the chromatographic performance of hydrophilic interaction liquid chromatography (HILIC) was evaluated as an alternative to the addition of an ionic liquid (IL) to the aqueous-organic mobile phase used with RPLC columns, for the analysis of eight β-adrenoceptor antagonists. ILs change the behavior of RPLC stationary phases owing to adsorption on their surface. Meanwhile, in HILIC, a layer of adsorbed water is formed on the stationary phase surface. The association of cationic basic compounds with the adsorbed additive ions, hydrophilic partitioning on the HILIC columns, and other interactions, give rise to complex retention mechanisms. The chromatographic behavior was examined in terms of retention, elution strength, selectivity, peak shape and resolution, using acetonitrile-water mobile phases buffered at pH 3. Both chromatographic modes, RPLC with added IL and HILIC, proved to be a viable solution to the problem of poor peak shape for basic compounds.
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22
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Manousi N, Rosenberg E, Deliyanni EA, Zachariadis GA. Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals. Molecules 2020; 25:E2411. [PMID: 32455827 PMCID: PMC7287798 DOI: 10.3390/molecules25102411] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/14/2020] [Accepted: 05/17/2020] [Indexed: 11/16/2022] Open
Abstract
Graphene oxide is a compound with a form similar to graphene, composed of carbon atoms in a sp2 single-atom layer of a hybrid connection. Due to its significant surface area and its good mechanical and thermal stability, graphene oxide has a plethora of applications in various scientific fields including heterogenous catalysis, gas storage, environmental remediation, etc. In analytical chemistry, graphene oxide has been successfully employed for the extraction and preconcentration of organic compounds, metal ions, and proteins. Since graphene oxide sheets are negatively charged in aqueous solutions, the material and its derivatives are ideal sorbents to bind with metal ions. To date, various graphene oxide nanocomposites have been successfully synthesized and evaluated for the extraction and preconcentration of metal ions from biological, environmental, agricultural, and food samples. In this review article, we aim to discuss the application of graphene oxide and functionalized graphene oxide nanocomposites for the extraction of metal ions prior to their determination via an instrumental analytical technique. Applications of ionic liquids and deep eutectic solvents for the modification of graphene oxide and its functionalized derivatives are also discussed.
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Affiliation(s)
- Natalia Manousi
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Erwin Rosenberg
- Institute of Chemical Technology and Analytics, Vienna University of Technology, 1060 Vienna, Austria;
| | - Eleni A. Deliyanni
- Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - George A. Zachariadis
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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23
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Pankajkumar-Patel N, Peris-García E, Ruiz-Angel MJ, García-Alvarez-Coque MC. Comparison of surfactant-mediated liquid chromatographic modes with sodium dodecyl sulphate for the analysis of basic drugs. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:2443-2452. [PMID: 32930233 DOI: 10.1039/d0ay00526f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In reversed-phase liquid chromatography (RPLC), basic drugs are positively charged at the usual working pH range and interact with free anionic silanols present in conventional silica-based stationary phases. This translates into stronger retention and tailed and broadened peaks. This problem can be resolved by the addition of reagents to the mobile phase that are adsorbed on the stationary phase, avoiding the access of solutes to silanols. Among these additives, surfactants under micellar conditions have provided good silanol suppressing potency through the technique known as micellar liquid chromatography (MLC). The most common example of this is anionic sodium dodecyl sulphate (SDS). When SDS is at moderate concentration in the presence of high organic solvent content, micelles are not formed and the chromatographic mode is known as high submicellar liquid chromatography (HSLC). In contrast, the addition of an oil to an aqueous solution of SDS containing micelles gives rise to microemulsions in a chromatographic mode known as microemulsion liquid chromatography (MELC). A comprehensive comparison of the chromatographic behaviour of a set of basic β-adrenoceptor antagonists analysed by MLC, HSLC and MELC is carried out in this work, in terms of retention, peak shape and organic solvent consumption. The study shows that high submicellar eluents reduce retention and enhance efficiency with respect to conventional RPLC and MLC. Meanwhile, MELC allows reduced analysis times with less organic solvent with respect to HSLC. The narrower and more symmetrical peaks in MLC, HSLC and MELC, with respect to conventional RPLC, reveal the presence of silanol masking.
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Affiliation(s)
- N Pankajkumar-Patel
- Departament de Química Analítica, Universitat de València, c/Dr. Moliner 50, Burjassot, Spain.
| | - E Peris-García
- Departament de Química Analítica, Universitat de València, c/Dr. Moliner 50, Burjassot, Spain.
| | - M J Ruiz-Angel
- Departament de Química Analítica, Universitat de València, c/Dr. Moliner 50, Burjassot, Spain.
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24
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Zhao WJ, Chen XY, Liu YQ, Li P, Li HJ. Liquid chromatographic separation of alkaloids in herbal medicines: Current status and perspectives. J Sep Sci 2020; 43:1755-1772. [PMID: 32160388 DOI: 10.1002/jssc.202000081] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/07/2020] [Accepted: 03/08/2020] [Indexed: 12/27/2022]
Abstract
Alkaloids are a widespread group of basic compounds in herbal medicines and have attracted great interest due to various pharmaceutical activities and desirable druggability. Their distinctive structures make chromatographic separation fairly difficult. Peak tailing, poor resolution, and inferior column-to-column reproducibility are common obstacles to overcome. In order to provide a valuable reference, the methodologies and/or strategies on liquid chromatographic separation of alkaloids in herbal medicines proposed from 2012 to 2019 are thoroughly summarized.
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Affiliation(s)
- Wen-Jing Zhao
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P.R. China
| | - Xu-Yan Chen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P.R. China
| | - Yu-Qian Liu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P.R. China
| | - Ping Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P.R. China
| | - Hui-Jun Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P.R. China
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25
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Xian H, Peng H, Wang X, Long D, Ni R, Chen J, Li S, Zhang Z, Peng J. Preparation and evaluation a mixed-mode stationary phase with imidazolium and carboxyl group for high performance liquid chromatography. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104131] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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26
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Wen XZ, Yu H, Ma YJ. Separation and indirect ultraviolet detection of ferrous and trivalent iron ions by using ionic liquids in ion chromatography. J Sep Sci 2019; 42:3432-3438. [PMID: 31538702 DOI: 10.1002/jssc.201900756] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/12/2019] [Accepted: 09/17/2019] [Indexed: 12/28/2022]
Abstract
A method of simultaneous separation and indirect ultraviolet detection of different valence iron ions Fe2+ and Fe3+ by using ionic liquids as mobile phase additives and ultraviolet absorption reagents on a cation exchange column functionalized with carboxylic acid group was developed. The effects of ionic liquids, organic acids, detection wavelength, etc. on separation and detection of Fe2+ and Fe3+ were investigated and the mechanism was discussed. The pyridinium and imidazolium ionic liquids were not only ultraviolet absorption reagents of indirect ultraviolet detection but also effective components for separating Fe2+ and Fe3+ . The separation and detection of Fe2+ and Fe3+ can be achieved using 0.5 mmol/L pyridinium ionic liquid-1.2 mmol/L methanesulfonic acid as the mobile phase. The determination of Fe2+ and Fe3+ had a good linear relationship in the concentration range of 1-100 mg/L. The limits of detection of Fe2+ and Fe3+ were 0.12 and 0.09 mg/L, respectively. This method was applied to the actual sample detection in the field of medical analysis. The spiked recoveries were between 97.3 and 99.5%, and the relative standard deviations were less than 0.6%. The method is simple, accurate, and reliable, and is an analytical method with universal and practical value.
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Affiliation(s)
- Xin-Zhu Wen
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, P. R. China
| | - Hong Yu
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, P. R. China
| | - Ya-Jie Ma
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, P. R. China
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27
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Ramezani AM, Ahmadi R, Absalan G. Designing a sustainable mobile phase composition for melamine monitoring in milk samples based on micellar liquid chromatography and natural deep eutectic solvent. J Chromatogr A 2019; 1610:460563. [PMID: 31564559 DOI: 10.1016/j.chroma.2019.460563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 09/18/2019] [Accepted: 09/20/2019] [Indexed: 12/14/2022]
Abstract
Modified micellar liquid chromatography (MLC) with a natural deep eutectic solvent (NADES), produced from choline chloride (ChCl) and ethylene glycol (EG), was employed for melamine (MEL) monitoring in milk matrix. This sustainable mobile phase was attained through chemometrical optimization of crucial variables including concentration of sodium dodecyl sulphate ([SDS]) along with volume percentages of both NADES and glacial acetic acid (GAC). The desirability function and central composite design were utilized as chemometrical tools. Retention time (tR-MEL), and chromatographic peak width of MEL at 50% of its height (W50%-MEL) were considered for finding the best possible arrangement of the influential factors in the configuration of the mobile phase. Under the optimal experimental conditions of 0.10 mol L-1 SDS, 4% (v/v) NADES, and 4% (v/v) GAC, the results showed that both tR-MEL and W50%-MEL drastically decreased when NADES was a part of the mobile phase composition. This indicated that ChCl-EG-based NADES had a significant impact on improving the chromatographic behaviour of an ionizable polar compound, MEL. At the optimal point, MEL was eluted in approximately 10 min without being interfered by coexisting proteins and endogenous species in milk. The practical performance of the mobile phase was established through direct injection of milk samples into the MLC system. The eligibility criteria of the United State-Food and Drug Administration (US-FDA) were considered for validation of the introduced methodology.
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Affiliation(s)
- Amir M Ramezani
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran
| | - Raheleh Ahmadi
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran
| | - Ghodratollah Absalan
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran.
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28
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Ma X, Du Y, Sun X, Liu J, Huang Z. Synthesis and application of amino alcohol-derived chiral ionic liquids, as additives for enantioseparation in capillary electrophoresis. J Chromatogr A 2019; 1601:340-349. [DOI: 10.1016/j.chroma.2019.04.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 04/12/2019] [Accepted: 04/14/2019] [Indexed: 12/20/2022]
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29
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Peris-García E, García-Alvarez-Coque M, Carda-Broch S, Ruiz-Angel M. Effect of buffer nature and concentration on the chromatographic performance of basic compounds in the absence and presence of 1-hexyl-3-methylimidazolium chloride. J Chromatogr A 2019; 1602:397-408. [DOI: 10.1016/j.chroma.2019.06.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/26/2019] [Accepted: 06/28/2019] [Indexed: 10/26/2022]
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30
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Estimation of Solute-Stationary Phase and Solute-Mobile Phase Interactions in the Presence of Ionic Liquids. SEPARATIONS 2019. [DOI: 10.3390/separations6030040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The presence of free silanols on alkyl-bonded reversed-phase stationary phases is responsible for broad and asymmetrical peaks when basic drugs are chromatographed with conventional octadecylsilane (C18) columns due to ionic interactions. In the last few years, ionic liquids (ILs) have attracted attention to reduce this undesirable silanol activity. ILs should be considered as dual modifiers (with a cationic and anionic character), which means that both cations and anions are able to adsorb on the stationary phase, creating a positively or negatively charged layer, depending on the relative adsorption. The accessibility of basic compounds to the silanols is prevented by both the IL cation and anion, improving the peak profiles. A comparative study of the performance of six imidazolium-based ILs, differing in their cation/anions, as modifiers of the chromatographic behavior of a group of ten β-adrenoceptor antagonists, is addressed. Mobile phases containing cationic amines (triethylamine and dimethyloctylamine) were used as a reference for the interpretation of the results. Using a mathematical model based on two chemical equilibria, the association constants between the solutes and modified stationary phase as well as those between solutes and the additive in the mobile phase were estimated. These values, together with the changes in retention and peak shape, were used to obtain conclusions about the retention mechanism, changes in the nature of the chromatographic system, and silanol suppression effect.
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31
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Ma X, Du Y, Zhu X, Feng Z, Chen C, Yang J. Evaluation of an ionic liquid chiral selector based on clindamycin phosphate in capillary electrophoresis. Anal Bioanal Chem 2019; 411:5855-5866. [DOI: 10.1007/s00216-019-01967-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/31/2019] [Accepted: 06/06/2019] [Indexed: 02/03/2023]
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32
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Cui G, Yu H, Ma Y. Ionic liquids as mobile phase additives for determination of thiocyanate and iodide by liquid chromatography. J Sep Sci 2019; 42:1733-1739. [DOI: 10.1002/jssc.201801277] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/30/2019] [Accepted: 02/24/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Ge Cui
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage MaterialsCollege of Chemistry and Chemical EngineeringHarbin Normal University Harbin P. R. China
| | - Hong Yu
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage MaterialsCollege of Chemistry and Chemical EngineeringHarbin Normal University Harbin P. R. China
| | - Ya‐jie Ma
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage MaterialsCollege of Chemistry and Chemical EngineeringHarbin Normal University Harbin P. R. China
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33
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Pyrzynska K, Sentkowska A. Liquid chromatographic analysis of selenium species in plant materials. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.12.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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34
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Abstract
The high performance of chemically-modified silica gel packing materials is based on the utilization of pure silica gels. Earlier silica gels used to be made from inorganic silica; however, nowadays, silica gels are made from organic silanes. The surface smoothness and lack of trace metals of new silica gels permits easy surface modifications (chemical reactions) and improves the reproducibility and stability. Sharpening peak symmetry is based on developing better surface modification methods (silylation). Typical examples can be found in the chromatography of amitriptyline for silanol testing and that of quinizarin for trace metal testing. These test compounds were selected and demonstrated sensitive results in the measurement of trace amounts of either silanol or trace metals. Here, we demonstrate the three-dimensional model chemical structures of bonded-phase silica gels with surface electron density for easy understanding of the molecular interaction sites with analytes. Furthermore, a quantitative explanation of hydrophilic and hydrophobic liquid chromatographies was provided. The synthesis methods of superficially porous silica gels and their modified products were introduced.
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35
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Ma X, Kan Z, Du Y, Yang J, Feng Z, Zhu X, Chen C. Enantioseparation of amino alcohol drugs by nonaqueous capillary electrophoresis with a maltobionic acid-based ionic liquid as the chiral selector. Analyst 2019; 144:7468-7477. [DOI: 10.1039/c9an01162e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This study deals with the nonaqueous capillary electrophoretic enantioseparation of twenty-two amino alcohol drugs with a maltobionic acid (MA)-based ionic liquid (tetramethylammonium maltobionic acid, TMA-MA) as the novel chiral selector.
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Affiliation(s)
- Xiaofei Ma
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education)
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
- State Key Laboratory of Natural Medicines
| | - Zigui Kan
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education)
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
- State Key Laboratory of Natural Medicines
| | - Yingxiang Du
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education)
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
- State Key Laboratory of Natural Medicines
| | - Jiangxia Yang
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education)
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
- State Key Laboratory of Natural Medicines
| | - Zijie Feng
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education)
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
- State Key Laboratory of Natural Medicines
| | - Xinqi Zhu
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education)
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
- State Key Laboratory of Natural Medicines
| | - Cheng Chen
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education)
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
- State Key Laboratory of Natural Medicines
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Tian M, Fang L, Yan X, Xiao W, Row KH. Determination of Heavy Metal Ions and Organic Pollutants in Water Samples Using Ionic Liquids and Ionic Liquid-Modified Sorbents. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2019; 2019:1948965. [PMID: 31781471 PMCID: PMC6875364 DOI: 10.1155/2019/1948965] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/09/2019] [Accepted: 10/03/2019] [Indexed: 05/03/2023]
Abstract
Water pollution, especially by inorganic and organic substances, is considered as a critical problem worldwide. Several governmental agencies are listing an increasing number of compounds as serious problems in water because of their toxicity, bioaccumulation, and persistence. In recent decades, there has been considerable research on developing analytical methods of heavy metal ions and organic pollutants from water. Ionic liquids, as the environment-friendly solvents, have been applied in the analytical process owing to their unique physicochemical properties. This review summarizes the applications of ionic liquids in the determination of heavy metal ions and organic pollutants in water samples. In addition, some sorbents that were modified physically or chemically by ionic liquids were applied in the adsorption of pollutants. According to the results in all references, the application of new designed ionic liquids and related sorbents is expected to increase in the future.
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Affiliation(s)
- Minglei Tian
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Luwei Fang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Xuemin Yan
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Wei Xiao
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Kyung Ho Row
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 402751, Republic of Korea
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37
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Asenso J, Wang L, Du Y, Liu QH, Xu BJ, Guo MZ, Tang DQ. Advances in detection and quantification of methylcytosine and its derivatives. J Sep Sci 2018; 42:1105-1116. [PMID: 30575277 DOI: 10.1002/jssc.201801100] [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: 10/21/2018] [Revised: 11/21/2018] [Accepted: 12/16/2018] [Indexed: 11/08/2022]
Abstract
Methylation of the fifth carbon atom in cytosine is an epigenetic modification of deoxyribonucleic acid that plays important roles in numerous cellular processes and disease pathogenesis. Three additional states of cytosine, that is, 5-hydroxymethylcytosine, 5-formylcytosine and 5-carboxylcytosine, have been identified and associated with the diagnosis and/or prognosis of diseases. However, accurate measurement of those intermediates is a challenge since their global levels are relatively low. A number of innovative methods have been developed to detect and quantify these compounds in biological samples, such as blood, tissue and urine, etc. This review focuses on recent advancement in detection and quantification of four cytosine modifications, based on which, the development, diagnosis, and prognosis of diseases could be monitored through non-invasive procedures.
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Affiliation(s)
- James Asenso
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China
| | - Liang Wang
- Department of Bioinformatics, School of Medical Informatics, Xuzhou Medical University, Xuzhou, P. R. China
| | - Yan Du
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China.,Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China
| | - Qing-Hua Liu
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China
| | - Bing-Ju Xu
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China
| | - Meng-Zhe Guo
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China.,Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China
| | - Dao-Quan Tang
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China.,Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou, P. R. China
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Peris-García E, Pankajkumar-Patel N, Ruiz-Angel MJ, Carda-Broch S, García-Alvarez-Coque MC. Oil-In-Water Microemulsion Liquid Chromatography. SEPARATION AND PURIFICATION REVIEWS 2018. [DOI: 10.1080/15422119.2018.1524386] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ester Peris-García
- Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100 Burjassot Spain
| | - Nikita Pankajkumar-Patel
- Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100 Burjassot Spain
| | - María José Ruiz-Angel
- Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100 Burjassot Spain
| | - Samuel Carda-Broch
- Departament de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, Castelló Spain
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Pyrrolidinium and morpholinium ionic liquids as a novel effective destabilising agent of mineral suspension. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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40
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Zhang YN, Yu H, Ma YJ, Cui G. Imidazolium ionic liquids as mobile phase additives in reversed phase liquid chromatography for the determination of iodide and iodate. Anal Bioanal Chem 2018; 410:7347-7355. [DOI: 10.1007/s00216-018-1347-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 08/25/2018] [Accepted: 08/28/2018] [Indexed: 12/20/2022]
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41
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Lin SL, Fuh MR. Preparation and characterization of vinylimidazole-based polymer monolithic stationary phases for reversed-phase and hydrophilic interaction capillary liquid chromatography. Talanta 2018; 187:73-82. [DOI: 10.1016/j.talanta.2018.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/01/2018] [Accepted: 05/02/2018] [Indexed: 12/11/2022]
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Suitability of 1-hexyl-3-methylimidazolium ionic liquids for the analysis of pharmaceutical formulations containing tricyclic antidepressants. J Chromatogr A 2018; 1559:118-127. [DOI: 10.1016/j.chroma.2017.11.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 11/21/2017] [Accepted: 11/26/2017] [Indexed: 11/17/2022]
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43
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Extent of the influence of phosphate buffer and ionic liquids on the reduction of the silanol effect in a C18 stationary phase. J Chromatogr A 2018; 1559:112-117. [DOI: 10.1016/j.chroma.2017.05.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/24/2017] [Accepted: 05/29/2017] [Indexed: 11/19/2022]
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44
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Liquid chromatography with alkylammonium formate ionic liquid mobile phases and fluorescence detection. J Chromatogr A 2018; 1559:128-135. [DOI: 10.1016/j.chroma.2018.03.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 03/05/2018] [Accepted: 03/12/2018] [Indexed: 02/05/2023]
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45
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Green-modified micellar liquid chromatography for isocratic isolation of some cardiovascular drugs with different polarities through experimental design approach. Anal Chim Acta 2018; 1010:76-85. [DOI: 10.1016/j.aca.2017.12.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 11/16/2017] [Accepted: 12/16/2017] [Indexed: 11/18/2022]
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Yabré M, Ferey L, Somé IT, Gaudin K. Greening Reversed-Phase Liquid Chromatography Methods Using Alternative Solvents for Pharmaceutical Analysis. Molecules 2018; 23:molecules23051065. [PMID: 29724076 PMCID: PMC6100308 DOI: 10.3390/molecules23051065] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 04/25/2018] [Accepted: 04/25/2018] [Indexed: 12/13/2022] Open
Abstract
The greening of analytical methods has gained increasing interest in the field of pharmaceutical analysis to reduce environmental impacts and improve the health safety of analysts. Reversed-phase high-performance liquid chromatography (RP-HPLC) is the most widely used analytical technique involved in pharmaceutical drug development and manufacturing, such as the quality control of bulk drugs and pharmaceutical formulations, as well as the analysis of drugs in biological samples. However, RP-HPLC methods commonly use large amounts of organic solvents and generate high quantities of waste to be disposed, leading to some issues in terms of ecological impact and operator safety. In this context, greening HPLC methods is becoming highly desirable. One strategy to reduce the impact of hazardous solvents is to replace classically used organic solvents (i.e., acetonitrile and methanol) with greener ones. So far, ethanol has been the most often used alternative organic solvent. Others strategies have followed, such as the use of totally aqueous mobile phases, micellar liquid chromatography, and ionic liquids. These approaches have been well developed, as they do not require equipment investments and are rather economical. This review describes and critically discusses the recent advances in greening RP-HPLC methods dedicated to pharmaceutical analysis based on the use of alternative solvents.
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Affiliation(s)
- Moussa Yabré
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000 Bordeaux, France.
- Laboratoire de développement du médicament, Université Ouaga 1 Pr Joseph Ki-Zerbo, Ouaga 03 BP 7021, Burkina Faso.
| | - Ludivine Ferey
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000 Bordeaux, France.
| | - Issa Touridomon Somé
- Laboratoire de développement du médicament, Université Ouaga 1 Pr Joseph Ki-Zerbo, Ouaga 03 BP 7021, Burkina Faso.
| | - Karen Gaudin
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000 Bordeaux, France.
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Sutton AT, Fraige K, Leme GM, da Silva Bolzani V, Hilder EF, Cavalheiro AJ, Arrua RD, Funari CS. Natural deep eutectic solvents as the major mobile phase components in high-performance liquid chromatography—searching for alternatives to organic solvents. Anal Bioanal Chem 2018; 410:3705-3713. [DOI: 10.1007/s00216-018-1027-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/08/2018] [Accepted: 03/14/2018] [Indexed: 01/27/2023]
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Fan ZQ, Guan C, Yu H. Analysis of Morpholinium Ionic Liquid Cations by Hydrophilic Interaction Columns Coupled with Indirect UV Detection. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201700280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Zi-Qiang Fan
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering; Harbin Normal University; Harbin 150025 China
| | - Chao Guan
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering; Harbin Normal University; Harbin 150025 China
| | - Hong Yu
- Heilongjiang Province Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering; Harbin Normal University; Harbin 150025 China
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Liu Y, Ma Y, Yu H, An Y. Rapid Determination of Pyrrolidinium Cations by Ion-Pair Chromatography With Imidazolium Ionic Liquids. J Chromatogr Sci 2017; 56:202-208. [DOI: 10.1093/chromsci/bmx100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Yongqiang Liu
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University Road, Limin Economic and Technological Development Zone, Harbin 150025, China
| | - Yajie Ma
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University Road, Limin Economic and Technological Development Zone, Harbin 150025, China
| | - Hong Yu
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University Road, Limin Economic and Technological Development Zone, Harbin 150025, China
| | - Ying An
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University Road, Limin Economic and Technological Development Zone, Harbin 150025, China
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Mohammad A, Qasimullah, Khan M, Mobin R. Thin-layer chromatography in the analysis of surfactants: At a glance. J LIQ CHROMATOGR R T 2017. [DOI: 10.1080/10826076.2017.1377731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ali Mohammad
- Department of Chemistry, School of Sciences, Maulana Azad National Urdu University, Hyderabad, India
| | - Qasimullah
- Department of Chemistry, School of Sciences, Maulana Azad National Urdu University, Hyderabad, India
| | - Mahfoozurrahman Khan
- Department of Applied Chemistry, Faculty of Engineering & Technology, Aligarh Muslim University, Aligarh, India
| | - Rizwana Mobin
- Department of Applied Chemistry, Faculty of Engineering & Technology, Aligarh Muslim University, Aligarh, India
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