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Klimova YA, Asnin LD. Adsorption of Binary Solvents on Chiral Stationary Phases with Grafted Macrocyclic Antibiotics. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421110091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract
A study is performed of the adsorption of water–methanol and water–acetonitrile mixtures on chiral stationary phases (CSPs) Chirobiotic R, Chirobiotic T, and Nautilus-E with grafted macrocyclic antibiotics ristocetin A, teicoplanin, and eremomycin, respectively. The patterns of adsorption on the indicated CSPs are qualitatively the same, and differ only by quantitative indicators. Adsorption isotherms of excess water from binary solvents have adsorption azeotrope points and show the preferred absorption of water in the range of pure organic component to an azeotrope point in the range of 60–75 mol % for H2О–МеОН and 80–90 mol % for H2O–MeCN systems. It is shown that the thickness of the adsorption phase in the first case is less than one nominal molecular layer (0.10–0.13 nm). For H2O–MeCN, it is 3–4 molecular layers (0.88–1.05 nm). Activity coefficients are calculated for the components of solutions in surface layers. The coefficients indicate the systems deviate considerably from the properties of an ideal adsorption solution. Reasons for this behavior are discussed.
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Thermodynamic Insights into the Separation of Carotenoids in Reversed-Phase Liquid Chromatography. Int J Anal Chem 2019; 2019:7535813. [PMID: 30719042 PMCID: PMC6335859 DOI: 10.1155/2019/7535813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/15/2018] [Accepted: 12/10/2018] [Indexed: 11/17/2022] Open
Abstract
The retention mechanism of four major carotenoids, two xanthophylls (i.e., lutein and zeaxanthin) and two carotenes (i.e., lycopene and β-carotene), was investigated in reversed-phase liquid chromatography with the aim of thermodynamic analysis. The experimental variables considered in this study were the composition of mobile phase (MP) and the temperature. Chromatographic elutions were undertaken under linear, isocratic conditions by using a C18 stationary phase, four different MP compositions (by varying the ratio methanol/acetonitrile from 66.5/28.5 to 47.5/47.5 v/v), and column temperatures in the range 283–313 K. Traditional Van't Hoff analysis has been used to estimate changes of standard enthalpy (ΔH°) and Gibbs free energy (ΔG°) associated with the solute transfer from the mobile to the stationary phase at each mobile phase composition. The thermodynamic quantities have been correlated to the structure of investigated carotenoids and their interaction with the octadecyl silica stationary phase.
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Ohashi J, Harada M, Okada T. Excess Adsorption of Organic Eluent Components from Mobile Phases Containing Electrolytes. Chromatographia 2018. [DOI: 10.1007/s10337-018-3552-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Ohashi J, Harada M, Okada T. A simple method for measuring excess adsorption isotherms of organic eluent components on reversed-phase packing materials. J Sep Sci 2016; 40:842-848. [PMID: 27990778 DOI: 10.1002/jssc.201601032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 11/11/2016] [Accepted: 11/28/2016] [Indexed: 11/08/2022]
Abstract
A simple frontal analysis method has been developed for the reliable measurement of excess adsorption isotherms of an organic component on reversed-phase adsorbents in a series of programmed concentration steps. In the present method, a peak, which is produced by refractive index change in column eluate, is detected at 589 nm; it represents the elution volume of the boundary. The method is applied to the measurement of the excess adsorption isotherms of organic eluent components from water on commercially available reversed-phase stationary phases. The results are in good agreement with the previously reported isotherms. We also measure the excess adsorption isotherms of organic eluent components from solutions containing electrolytes. There are not any interference peaks on the elution traces. The method is thus reliably applicable to the evaluation of the excess adsorption of organic eluent components in practical systems.
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Affiliation(s)
- Junji Ohashi
- Department of Chemistry, Tokyo Institute of Technology, Tokyo, Japan.,Analytical and Quality Evaluation Research Laboratories, Daiichi Sankyo Co., Ltd., Hiratsuka, Japan
| | - Makoto Harada
- Department of Chemistry, Tokyo Institute of Technology, Tokyo, Japan
| | - Tetsuo Okada
- Department of Chemistry, Tokyo Institute of Technology, Tokyo, Japan
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Catani M, Guzzinati R, Marchetti N, Pasti L, Cavazzini A. Exploring Fluorous Affinity by Liquid Chromatography. Anal Chem 2015; 87:6854-60. [DOI: 10.1021/acs.analchem.5b01212] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Martina Catani
- University of Ferrara, Department of Chemistry and Pharmaceutical Sciences, Via L. Borsari, 46, 44121 Ferrara, Italy
| | - Roberta Guzzinati
- University of Ferrara, Department of Chemistry and Pharmaceutical Sciences, Via L. Borsari, 46, 44121 Ferrara, Italy
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), R. C. Casaccia, Via Anguillarese, 301, S. Maria
di Galeria, 00123, Roma, Italy
| | - Nicola Marchetti
- University of Ferrara, Department of Chemistry and Pharmaceutical Sciences, Via L. Borsari, 46, 44121 Ferrara, Italy
| | - Luisa Pasti
- University of Ferrara, Department of Chemistry and Pharmaceutical Sciences, Via L. Borsari, 46, 44121 Ferrara, Italy
| | - Alberto Cavazzini
- University of Ferrara, Department of Chemistry and Pharmaceutical Sciences, Via L. Borsari, 46, 44121 Ferrara, Italy
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Adsorption of aqueous organic mixtures on a chiral stationary phase with bound antibiotic eremomycin. J Chromatogr A 2014; 1363:71-8. [DOI: 10.1016/j.chroma.2014.08.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Revised: 07/23/2014] [Accepted: 08/20/2014] [Indexed: 11/24/2022]
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Ciogli A, Simone P, Villani C, Gasparrini F, Laganà A, Capitani D, Marchetti N, Pasti L, Massi A, Cavazzini A. Revealing the Fine Details of Functionalized Silica Surfaces by Solid-State NMR and Adsorption Isotherm Measurements: The Case of Fluorinated Stationary Phases for Liquid Chromatography. Chemistry 2014; 20:8138-48. [DOI: 10.1002/chem.201304330] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 02/25/2014] [Indexed: 11/11/2022]
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Cavazzini A, Marchetti N, Guzzinati R, Pasti L, Ciogli A, Gasparrini F, Laganà A. Understanding Mixed-Mode Retention Mechanisms in Liquid Chromatography with Hydrophobic Stationary Phases. Anal Chem 2014; 86:4919-26. [DOI: 10.1021/ac500248b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Alberto Cavazzini
- Department
of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari, 46, 44121 Ferrara, Italy
| | - Nicola Marchetti
- Department
of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari, 46, 44121 Ferrara, Italy
| | - Roberta Guzzinati
- Department
of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari, 46, 44121 Ferrara, Italy
| | - Luisa Pasti
- Department
of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari, 46, 44121 Ferrara, Italy
| | - Alessia Ciogli
- Dipartimento
di Chimica e Tecnologia del Farmaco, University “La Sapienza”, 00185 Rome, Italy
| | - Francesco Gasparrini
- Dipartimento
di Chimica e Tecnologia del Farmaco, University “La Sapienza”, 00185 Rome, Italy
| | - Aldo Laganà
- Department
of Chemistry, University of Rome, “La Sapienza”, Piazzale
Aldo Moro 5, 00185 Rome, Italy
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Cavazzini A, Pasti L, Greco R, Costa V, Solera D, Dondi F, Marchetti N, Laganà A, Gasparrini F. Geometric characterization of straight-chain perfluorohexylpropyl adsorbents for high performance liquid chromatography. J Chromatogr A 2013; 1286:47-54. [DOI: 10.1016/j.chroma.2013.02.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 02/12/2013] [Accepted: 02/15/2013] [Indexed: 11/24/2022]
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Cavazzini A, Marchetti N, Pasti L, Greco R, Dondi F, Laganà A, Ciogli A, Gasparrini F. A New Method to Investigate the Intrusion of Water into Porous Hydrophobic Structures under Dynamic Conditions. Anal Chem 2012; 85:19-22. [DOI: 10.1021/ac303253b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Alberto Cavazzini
- Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari 46, 44121 Ferrara,
Italy
| | - Nicola Marchetti
- Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari 46, 44121 Ferrara,
Italy
| | - Luisa Pasti
- Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari 46, 44121 Ferrara,
Italy
| | - Roberto Greco
- Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari 46, 44121 Ferrara,
Italy
| | - Francesco Dondi
- Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari 46, 44121 Ferrara,
Italy
| | - Aldo Laganà
- Department of Chemistry, University of Rome “La Sapienza”, Piazzale
A. Moro 5, 00185 Rome, Italy
| | - Alessia Ciogli
- Dipartimento di Chimica e Tecnologia del Farmaco, University of Rome “La Sapienza”, Piazzale A. Moro
5, 00185 Rome, Italy
| | - Francesco Gasparrini
- Dipartimento di Chimica e Tecnologia del Farmaco, University of Rome “La Sapienza”, Piazzale A. Moro
5, 00185 Rome, Italy
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Marchetti N, Caciolli L, Laganà A, Gasparrini F, Pasti L, Dondi F, Cavazzini A. Fluorous Affinity Chromatography for Enrichment and Determination of Perfluoroalkyl Substances. Anal Chem 2012; 84:7138-45. [DOI: 10.1021/ac301442m] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Nicola Marchetti
- Lab “Terra&Acqua Tech”-Water Quality, Technopole of Ferrara and Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
| | - Lorenzo Caciolli
- Lab “Terra&Acqua Tech”-Water Quality, Technopole of Ferrara and Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
| | - Aldo Laganà
- Department of Chemistry, University “La Sapienza”, Rome, Italy
| | - Francesco Gasparrini
- Dipartimento
di Chimica e Tecnologia
del Farmaco, University “La Sapienza”, Rome, Italy
| | - Luisa Pasti
- Department
of Chemistry and
Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
| | - Francesco Dondi
- Department
of Chemistry and
Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
| | - Alberto Cavazzini
- Department
of Chemistry and
Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
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Wang M, Avula B, Wang YH, Parcher JF, Khan IA. Comparison of concentration pulse and tracer pulse chromatography: Experimental determination of eluent uptake by bridged-ethylene hybrid ultra-high performance liquid chromatography packings. J Chromatogr A 2012; 1220:75-81. [DOI: 10.1016/j.chroma.2011.11.051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 11/08/2011] [Accepted: 11/24/2011] [Indexed: 11/25/2022]
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