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Brigodiot C, Marsiglia M, Dalmazzone C, Schroën K, Colin A. Studying surfactant mass transport through dynamic interfacial tension measurements: A review of the models, experiments, and the contribution of microfluidics. Adv Colloid Interface Sci 2024; 331:103239. [PMID: 38936181 DOI: 10.1016/j.cis.2024.103239] [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: 01/08/2024] [Revised: 06/14/2024] [Accepted: 06/14/2024] [Indexed: 06/29/2024]
Abstract
Surfactant mass transport towards an interface plays a critical role during formation of emulsions, foams and in industrial processes where two immiscible phases coexist. The understanding of these mechanisms as experimentally observed by dynamic interfacial tension measurements, is crucial. In this review, theoretical models describing both equilibrated systems and surfactant kinetics are covered. Experimental results from the literature are analysed based on the nature of surfactants and the tensiometry methods used. The innovative microfluidic techniques that have become available to study both diffusion and adsorption mechanisms during surfactant mass transport are discussed and compared with classical methods. This review focuses on surfactant transport during formation of droplets or bubbles; stabilisation of dispersed systems is not discussed here.
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Affiliation(s)
- Camille Brigodiot
- IFP Energies nouvelles (IFPEN), 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France
| | - Marie Marsiglia
- IFP Energies nouvelles (IFPEN), 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France.
| | - Christine Dalmazzone
- IFP Energies nouvelles (IFPEN), 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France
| | - Karin Schroën
- Wageningen University and Research (WUR), Wageningen, the Netherlands
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Racovita RC, Ciuca MD, Catana D, Comanescu C, Ciocirlan O. Microemulsions of Nonionic Surfactant with Water and Various Homologous Esters: Preparation, Phase Transitions, Physical Property Measurements, and Application for Extraction of Tricyclic Antidepressant Drugs from Aqueous Media. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2311. [PMID: 37630897 PMCID: PMC10458553 DOI: 10.3390/nano13162311] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023]
Abstract
Microemulsions are nanocolloidal systems composed of water, an oil, and a surfactant, sometimes with an additional co-surfactant, which have found a wide range of practical applications, including the extractive removal of contaminants from polluted water. In this study, microemulsion systems, including a nonionic surfactant (Brij 30), water, and esters selected from two homologous series of C1-C6 alkyl acetates and ethyl C1-C4 carboxylates, respectively, were prepared by the surfactant titration method. Phase transitions leading to the formation of Winsor II and Winsor IV microemulsions were observed and phase diagrams were constructed. The dependences of phase transitions on the salinity and pH and the addition of isopropanol as a co-surfactant were also investigated. Some physical properties, namely density, refractive index, electrical conductivity, dynamic viscosity, and particle size, were measured for a selection of Winsor IV microemulsions, providing further insight into some other phase transitions occurring in the monophasic domains of phase diagrams. Finally, Winsor II microemulsions were tested as extraction solvents for the removal of four tricyclic antidepressant drugs from aqueous media. Propyl acetate/Brij 30/H2O microemulsions provided the best extraction yields (>90%), the highest Nernst distribution coefficients (~40-88), and a large volumetric ratio of almost 3 between the recovered purified water and the resulting microemulsion extract. Increasing the ionic strength (salinity) or the pH of the aqueous antidepressant solutions led to an improvement in extraction efficiencies, approaching 100%. These results could be extrapolated to other classes of pharmaceutical contaminants and suggest ester- and nonionic surfactant-based microemulsions are a promising tool for environmental remediation.
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Affiliation(s)
- Radu C. Racovita
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu St., District 1, 011061 Bucharest, Romania; (M.D.C.); (D.C.); (O.C.)
| | - Maria D. Ciuca
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu St., District 1, 011061 Bucharest, Romania; (M.D.C.); (D.C.); (O.C.)
| | - Daniela Catana
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu St., District 1, 011061 Bucharest, Romania; (M.D.C.); (D.C.); (O.C.)
| | - Cezar Comanescu
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu St., District 1, 011061 Bucharest, Romania; (M.D.C.); (D.C.); (O.C.)
- National Institute of Materials Physics, 405A Atomistilor St., 077125 Magurele, Romania
- Faculty of Physics, University of Bucharest, 405 Atomistilor St., 077125 Magurele, Romania
| | - Oana Ciocirlan
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu St., District 1, 011061 Bucharest, Romania; (M.D.C.); (D.C.); (O.C.)
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Sadhu B, Clark AE. Modulating Aggregation in Microemulsions: The Dispersion by Competitive Intermolecular Interaction Model. J Phys Chem Lett 2022; 13:10981-10987. [PMID: 36404619 DOI: 10.1021/acs.jpclett.2c02658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A phenomenological model has been developed for the mechanism of action of phase modifiers as additives that control aggregation phenomena within water-in-oil emulsions. The "Dispersion by Competitive Intermolecular Interaction" model (DCI) explicitly considers the strength and prevalence of different intermolecular interactions that influence the molecular association of amphiphiles, the resulting distribution of aggregate size, and interaggregate interactions that influence phase phenomena. The existing "cosolvent" and "cosurfactant" association models, which describe the distribution of these amphiphiles within the solution, are re-examined in the context of intermolecular interactions. The different contributions of intermolecular interactions to the potential energy landscape of molecular association create distinct regimes within the DCI model that explain prior observations of cosolvent and cosurfactant behavior. The specific system under consideration, the N,N,N',N'-tetraoctyl diglycolamide amphiphile extractant with tributyl phosphate or dihexyl octanamide phase modifier additives, represents a new regime-labeled the polar disruption regime-where strong hydrogen bonding of the phase modifier with the polar-solutes disrupts the internal hydrogen bonding network of the polar micellar core, thereby decreasing aggregate size and narrowing the polydispersity in solution.
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Affiliation(s)
- Biswajit Sadhu
- Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, Maharashtra400085, India
| | - Aurora E Clark
- Department of Chemistry, Washington State University, Pullman, Washington99164, United States
- Department of Chemistry, University of Utah, Salt Lake City, Utah84112, United States
- Pacific Northwest National Laboratory, Richland, Washington99354, United States
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Zhang C, Yang X, Dai J, Liu W, Yang H, Bai Z. Efficient extraction of phenol from wastewater by ionic micro-emulsion method: Anionic and cationic. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Qi W, He J, Li M, Zhai M, Zhao L. Efficient extraction of rhenium through demulsification of imidazolium ionic liquid-based microemulsions from aqueous solution. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Sadat Mirhoseini B, Salabat A. A novel surfactant-free microemulsion system for the synthesis of poly(methyl methacrylate)/Ag nanocomposite. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Shao M, Chen M, Fan M, Luo G, Jin C, Huang Z. Microemulsion system constructed with a new cyano-functionalized ionic liquid for the extraction of Pd(II) and preparation of palladium nanoparticles. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119198] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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8
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Dib N, Girardi VR, Silber JJ, Correa NM, Falcone RD. How the external solvent in biocompatible reverse micelles can improve the alkaline phosphatase behavior. Org Biomol Chem 2021; 19:4969-4977. [PMID: 34002175 DOI: 10.1039/d0ob02371j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the last decade, the nature of the nonpolar solvents that can be part of reverse micelles (RMs) has been the topic of several investigations to improve their applications. In this sense, the hydrolysis of 1-naphthyl phosphate catalyzed by the enzyme alkaline phosphatase (AP) was used as a probe to investigate the effect of the change of the external solvent on RMs formulated with the anionic surfactant sodium diethylhexyl sulfosuccinate (AOT). As external nonpolar solvents, two biocompatible lipophilic esters, isopropyl myristate and methyl laurate, and the traditional nonpolar solvents, n-heptane and benzene, were used. The results were compared among the RMs investigated and with the reaction in homogeneous media. Thus, the effect of the nanoconfinement as well as the impact of the replacement of a conventional external nonpolar solvent by biocompatible solvents were analyzed. The results indicate that the catalytic efficiency in the AOT RMs is larger than that in homogeneous media, denoting a different hydration level over the AP enzyme, which is directly related to the different degrees of nonpolar solvent penetration to the RM interface. Our findings demonstrated that toxic solvents such as n-heptane and benzene can be replaced by nontoxic ones (isopropyl myristate or methyl laurate) in AOT RMs without affecting the performance of micellar systems as nanoreactors, making them a green and promising alternative toward efficient and sustainable chemistry.
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Affiliation(s)
- Nahir Dib
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina and Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
| | - Valeria R Girardi
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina
| | - Juana J Silber
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina and Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
| | - N Mariano Correa
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina and Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
| | - R Dario Falcone
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina and Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
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Guo Y, Li HY, Cheng J, Shen S, Diao J, Xie B. Highly efficient separation and recovery of Si, V, and Cr from V-Cr-bearing reducing slag. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118396] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Guo Y, Li HY, Shen S, Cheng J, Diao J, Xie B. A novel process for comprehensive resource utilization of hazardous chromium sludge: Progressive recovery of Si, V, Fe and Cr. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124669. [PMID: 33301969 DOI: 10.1016/j.jhazmat.2020.124669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/14/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
Chromium sludge is a hazardous solid waste which cannot be effectively treated but only piled up and abandoned, causing serious environment pollution and resource wasting. This work proposes an effective novel process to separately recover all resources in chromium sludge via a sustainable way. The obtained acid solving liquid from chromium sludge is desiliconized by cationic flocculant (PCAM) to induce coprecipitation of polysilicate gel and PCAM, which mixture is calcinated to generate the product of white carbon black in purity of 94.35% with a recovery of 92.58%. After desiliconization, V in the solving liquid is selectively extracted by microemulsion (ME), which is recovered as V2O5 in purity of 99.34% with a recovery of 95.53% by the subsequent procedure of stripping-precipitation-calcination. The Fe3+ in raffinate is reduced to Fe2+ cations by Na2SO3, and is then recovered by H2C2O4 precipitation to generate the FeC2O4 product in purity of 99.12% with a recovery of 98.25%. Cr3+ cations in residual solution are recovered by alkaline precipitation and calcination to generate the Cr2O3 product in purity of 98.25% with a recovery of 92.68%. This work provides fresh penetrations into the synchronous detoxification, resource recovery and value-added utilization of hazardous industrial solid wastes.
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Affiliation(s)
- Yun Guo
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
| | - Hong-Yi Li
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China.
| | - Shuo Shen
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
| | - Jie Cheng
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
| | - Jiang Diao
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
| | - Bing Xie
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
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11
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Batov DV. Preparation and Some Physicochemical Properties of
Water–Surfactant–Halohydrocarbon Microemulsions Suitable for the Creation of Combined
Fire Extinguishing Agents. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220090297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Polyakova AS, Murashova NM, Yurtov EV. Microemulsions in Sodium Dodecyl Sulfate–1-Butanol–Extractant–Kerosene–Water Systems for Extracting Nonferrous Metals from Oxide Raw Materials. RUSS J APPL CHEM+ 2020. [DOI: 10.1134/s1070427220020135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Guo Y, Li HY, Yuan YH, Huang J, Diao J, Xie B. Microemulsion extraction: An efficient way for simultaneous detoxification and resource recovery of hazardous wastewater containing V(V) and Cr(VI). JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121948. [PMID: 31884357 DOI: 10.1016/j.jhazmat.2019.121948] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 06/10/2023]
Abstract
Vanadium (V) metallurgy industry produces significant amount of ammonium polyvanadate (APV) wastewater containing V(V) and Cr(VI), thereby polluting the ecological environment and adversely affecting human health and wasting natural resources. Herein, an efficient method for separating V and chromium (Cr) from APV wastewater is proposed based on an artful pretreatment of the selective transformation of Cr(VI) using microemulsion extraction to realize harmless treatment of the wastewater and recycling of V and Cr resources. The influence of various factors on the V and Cr extraction efficiencies has been investigated, including the extractant concentration, aqueous phase-to-microemulsion volume ratio, contact time, and temperature. Furthermore, the principle of Cr transformation and microemulsion extraction and stripping has been illustrated and the recyclability of the microemulsion has been evaluated. Under optimum conditions, 96.29 % of V(V) and 95.56 % of Cr(VI) were separately recovered from the AVP wastewater, confirming the efficient separation and recovery of V and Cr. This study highlights a new approach for the separate recovery of V(V) and Cr(VI) from hazardous wastewater and provides new insights into the simultaneous detoxification and resource utilization of industrial hazardous wastes.
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Affiliation(s)
- Yun Guo
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
| | - Hong-Yi Li
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China.
| | - Yi-Heng Yuan
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
| | - Jie Huang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
| | - Jiang Diao
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
| | - Bing Xie
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing 400044, China
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Kim H, Han M, Bandara SR, Espinosa-Marzal RM, Leal C. Mixing oil and water with ionic liquids: bicontinuous microemulsions under confinement. SOFT MATTER 2019; 15:9609-9613. [PMID: 31750504 DOI: 10.1039/c9sm01649j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report the structural transition of a phosphonium ionic liquid-based microemulsion from the bulk to nanoconfined between atomically flat micas. Upon the nanoconfinement, we observed a firmly surface-adsorbed ionic liquid film that stabilizes the nanoconfined microemulsion. Further confinement (<11 nm) induces rearrangements in the microemulsion culminating into two well-ordered layers with slow dynamics.
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Affiliation(s)
- Hojun Kim
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, IL-61801 Urbana, USA.
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Dib N, Falcone RD, Acuña A, García-Río L. Characterization of Reverse Micelles Formulated with the Ionic-Liquid-like Surfactant Bmim-AOT and Comparison with the Traditional Na-AOT: Dynamic Light Scattering, 1H NMR Spectroscopy, and Hydrolysis Reaction of Carbonate as a Probe. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12744-12753. [PMID: 31495176 DOI: 10.1021/acs.langmuir.9b01083] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The present study investigated how the presence of butylmethylimidazolium cation (bmim+) alters the interfacial properties of reverse micelles (RMs) created with the ionic liquid-like surfactant 1-butyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (bmim-AOT), in comparison to sodium 1,4-bis-2-ethylhexylsulfosuccinate (Na-AOT) RMs, employing dynamic light scattering (DLS) and 1H NMR techniques. Moreover, through the hydrolysis reaction of bis(4-nitrophenyl)carbonate inside both RMs as reaction probe, interfacial properties changes were explored in more detail. The kinetic solvent isotope effect was also analyzed. Micellar systems were formed using n-heptane as external nonpolar solvent and water as the polar component. According to the DLS studies, water is encapsulated inside the organized media; however, a different tendency is observed depending on the cationic component of the surfactant. For Na-AOT system, the results suggest that the micellar shapes are probably spherical, while in the case of bmim-AOT, a transition from ellipsoidal to spherical micelles could be occurring when water is added. 1H NMR data show that water is structured differently when Na+ cation is replaced by bmim+; in bmim-AOT RMs, the interaction of water with the surfactant is weaker and the water hydrogen-bonding network is less disturbed than in Na-AOT RMs. Kinetic studies reveal that the hydrolysis reaction in bmim-AOT RMs was much more favorable in comparison to Na-AOT RMs. In addition, when water content decreases in bmim-AOT RMs, the hydrolysis reaction rate increases and the solvent isotope effect remains constant, while for Na-AOT solutions, both the reaction rate and the solvent isotope effect decrease. Our results indicate that bmim+ cation would be located in the surfactant layer in such a way the negative charge density in the interface is less than that in Na-AOT RMs, and the reaction is more favorable. Additionally, as 1H NMR studies reveal, the interfacial water molecules would be more available in bmim-AOT RMs to participate in the nucleophilic attack. Therefore, the present study evidences how the replacement of Na+ counterion by bmim+ alters the composition of the interface of AOT RMs.
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Affiliation(s)
- Nahir Dib
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), CONICET-UNRC, Departamento de Química , Universidad Nacional de Río Cuarto , Agencia Postal # 3, CP X5804BYA Río Cuarto , Argentina
| | - R Dario Falcone
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), CONICET-UNRC, Departamento de Química , Universidad Nacional de Río Cuarto , Agencia Postal # 3, CP X5804BYA Río Cuarto , Argentina
| | - Angel Acuña
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Física , Universidade de Santiago de Compostela , 15782 Santiago , Spain
| | - Luis García-Río
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Física , Universidade de Santiago de Compostela , 15782 Santiago , Spain
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Xiang Z, Wang S, Yang Y, Xin X. Equilibrium, thermodynamics and kinetics study on Au(III) extraction by gemini surfactant with different spacer length. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1521831] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Zeyang Xiang
- School of Chemistry and Chemical Engineering, Key Laboratory for Special Functional Aggregate Materials of Education Ministry, Shandong University, Jinan, China
| | - Shubin Wang
- School of Chemistry and Chemical Engineering, Key Laboratory for Special Functional Aggregate Materials of Education Ministry, Shandong University, Jinan, China
| | - Yanzhao Yang
- School of Chemistry and Chemical Engineering, Key Laboratory for Special Functional Aggregate Materials of Education Ministry, Shandong University, Jinan, China
| | - Xia Xin
- National Engineering Technology Research Center For Colloidal Materials, Shandong University, Jinan, China
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17
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Jie F, Bai Z, Yang X. Extraction of Mn(II) from NaCl solution by NaCl/sodium oleate/n-pentanol/n-heptane microemulsion system. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1445108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Fengping Jie
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of mechanical and power engineering, East China University of Science and Technology, Shanghai, China
| | - Zhishan Bai
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of mechanical and power engineering, East China University of Science and Technology, Shanghai, China
| | - Xiaoyong Yang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of mechanical and power engineering, East China University of Science and Technology, Shanghai, China
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18
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Study on extraction of cobalt(II) by sodium laurate/pentan-1-ol/heptane/NaCl microemulsion system. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-017-5685-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Dai X, Qiang X, Gao J, Teng J, Zang H, Song H. Phase behaviors and characterization of magnetic microemulsions containing pentaalkylguanidinium-based magnetic room-temperature ionic liquids (MRTILs). NEW J CHEM 2018. [DOI: 10.1039/c8nj01049h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Strong magnetic susceptibility and low viscosity magnetic microemulsions containing pentaalkylguanidinium-based magnetic room temperature ionic liquids.
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Affiliation(s)
- Xuezhi Dai
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Xiaolian Qiang
- Institute of Chemical Materials
- China Academy of Engineering Physics (CAEP)
- Mianyang 621900
- China
- Department of Physical Chemistry and Centre for Nanointegration (CENIDE)
| | - Jing Gao
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Juan Teng
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Huimin Zang
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hang Song
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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20
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Rasulov SM, Abdulagatov IM. PVTx and vapor-pressure measurements of the quaternary water + n -octane + sodium dodecyl sulfate + 1-propanol solutions. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.04.102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Debbih M, Guermouche MH, Guermouche S. Microemulsion high performance liquid chromatography method for the determination of ibuprofen in the presence of preservatives and impurities in oral pediatric suspension. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0162-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Xu J, Deng H, Fu Y, Chen Y, Zhang J, Hou W. Surfactant-free microemulsions of 1-butyl-3-methylimidazolium hexafluorophosphate, propylamine nitrate, and water. SOFT MATTER 2017; 13:2067-2074. [PMID: 28217785 DOI: 10.1039/c7sm00155j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Generally, surfactants (or amphiphiles) are believed to be necessary components of microemulsions. However, it has been demonstrated that, in the absence of traditional surfactants, microemulsions can also form from a ternary system of two immiscible fluids (i.e., oil and water phases) and an amphi-solvent, but the current understanding of such surfactant-free microemulsions (SFMEs) is very limited. Herein, we report an SFME consisting of the hydrophobic ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6), the protic IL propylamine nitrate (PAN), and water, in which bmimPF6 and PAN are used as the oil phase and the amphi-solvent, respectively. The microstructures and structural transitions of the SFME were investigated using cyclic voltammetry, fluorescence spectroscopy, and ultraviolet-visible spectroscopy. The SFME exhibited water-in-bmimPF6 (W/IL), bicontinuous (BC), and bmimPF6-in-water (IL/W) microstructures, depending on the composition of the ternary system, similar to the case of traditional surfactant-based microemulsions (SBMEs). The three kinds of microstructures were confirmed by cryogenic transmission electron microscopy (cryo-TEM) observations. To the best of our knowledge, this is the first report on SFMEs composed of two ILs as components, especially where one is used as the amphi-solvent.
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Affiliation(s)
- Jie Xu
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Huanhuan Deng
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yunlei Fu
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yuquan Chen
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Jing Zhang
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Wanguo Hou
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, P. R. China.
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23
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Extraction of palladium (II) by a silicone ionic liquid-based microemulsion system from chloride medium. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.06.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Yang L, Xie X, Zhang J, Sun G. Microemulsion Electrokinetic Chromatography in Combination with Chemometric Methods to Evaluate the Holistic Quality Consistency and Predict the Antioxidant Activity of Ixeris sonchifolia (Bunge) Hance Injection. PLoS One 2016; 11:e0157601. [PMID: 27336298 PMCID: PMC4918936 DOI: 10.1371/journal.pone.0157601] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 05/31/2016] [Indexed: 11/24/2022] Open
Abstract
In this paper, microemulsion electrokinetic chromatography (MEEKC) fingerprints combined with quantification were successfully developed to monitor the holistic quality consistency of Ixeris sonchifolia (Bge.) Hance Injection (ISHI). ISHI is a Chinese traditional patent medicine used for its anti-inflammatory and hemostatic effects. The effects of five crucial experimental variables on MEEKC were optimized by the central composite design. Under the optimized conditions, the MEEKC fingerprints of 28 ISHIs were developed. Quantitative determination of seven marker compounds was employed simultaneously, then 28 batches of samples from two manufacturers were clearly divided into two clusters by the principal component analysis. In fingerprint assessments, a systematic quantitative fingerprint method was established for the holistic quality consistency evaluation of ISHI from qualitative and quantitative perspectives, by which the qualities of 28 samples were well differentiated. In addition, the fingerprint—efficacy relationship between the fingerprints and the antioxidant activities was established utilizing orthogonal projection to latent structures, which provided important medicinal efficacy information for quality control. The present study offered a powerful and holistic approach to evaluating the quality consistency of herbal medicines and their preparations.
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Affiliation(s)
- Lanping Yang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiuman Xie
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jing Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Guoxiang Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
- * E-mail:
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25
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Hanano A, Almousally I, Shaban M, Rahman F, Blee E, Murphy DJ. Biochemical, Transcriptional, and Bioinformatic Analysis of Lipid Droplets from Seeds of Date Palm (Phoenix dactylifera L.) and Their Use as Potent Sequestration Agents against the Toxic Pollutant, 2,3,7,8-Tetrachlorinated Dibenzo-p-Dioxin. FRONTIERS IN PLANT SCIENCE 2016; 7:836. [PMID: 27375673 PMCID: PMC4896926 DOI: 10.3389/fpls.2016.00836] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 05/27/2016] [Indexed: 05/25/2023]
Abstract
Contamination of aquatic environments with dioxins, the most toxic group of persistent organic pollutants (POPs), is a major ecological issue. Dioxins are highly lipophilic and bioaccumulate in fatty tissues of marine organisms used for seafood where they constitute a potential risk for human health. Lipid droplets (LDs) purified from date palm, Phoenix dactylifera, seeds were characterized and their capacity to extract dioxins from aquatic systems was assessed. The bioaffinity of date palm LDs toward 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), the most toxic congener of dioxins was determined. Fractioned LDs were spheroidal with mean diameters of 2.5 µm, enclosing an oil-rich core of 392.5 mg mL(-1). Isolated LDs did not aggregate and/or coalesce unless placed in acidic media and were strongly associated with three major groups of polypeptides of relative mass 32-37, 20-24, and 16-18 kDa. These masses correspond to the LD-associated proteins, oleosins, caleosins, and steroleosins, respectively. Efficient partitioning of TCDD into LDs occurred with a coefficient of log K LB/w,TCDD = 7.528 ± 0.024; it was optimal at neutral pH and was dependent on the presence of the oil-rich core, but was independent of the presence of LD-associated proteins. Bioinformatic analysis of the date palm genome revealed nine oleosin-like, five caleosin-like, and five steroleosin-like sequences, with predicted structures having putative lipid-binding domains that match their LD stabilizing roles and use as bio-based encapsulation systems. Transcriptomic analysis of date palm seedlings exposed to TCDD showed strong up-regulation of several caleosin and steroleosin genes, consistent with increased LD formation. The results suggest that the plant LDs could be used in ecological remediation strategies to remove POPs from aquatic environments. Recent reports suggest that several fungal and algal species also use LDs to sequester both external and internally derived hydrophobic toxins, which indicates that our approach could be used as a broader biomimetic strategy for toxin removal.
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Affiliation(s)
- Abdulsamie Hanano
- Department of Molecular Biology and Biotechnology, Atomic Energy Commission of SyriaDamascus, Syria
| | - Ibrahem Almousally
- Department of Molecular Biology and Biotechnology, Atomic Energy Commission of SyriaDamascus, Syria
| | - Mouhnad Shaban
- Department of Molecular Biology and Biotechnology, Atomic Energy Commission of SyriaDamascus, Syria
| | - Farzana Rahman
- Genomics and Computational Biology Group, University of South WalesPontypridd, UK
| | - Elizabeth Blee
- Institut de Biologie Moléculaire des PlantesStrasbourg, France
| | - Denis J. Murphy
- Genomics and Computational Biology Group, University of South WalesPontypridd, UK
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26
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Ghouas H, Haddou B, Kameche M, Canselier JP, Gourdon C. Removal of Tannic Acid From Aqueous Solution by Cloud Point Extraction and Investigation of Surfactant Regeneration by Microemulsion Extraction. J SURFACTANTS DETERG 2015. [DOI: 10.1007/s11743-015-1764-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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27
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Song RJ, Zhou J. Microemulsion liquid chromatographic method for simultaneous separation and determination of six flavonoids of Apocynum venetum leaf extract. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 995-996:8-14. [DOI: 10.1016/j.jchromb.2015.05.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/18/2015] [Accepted: 05/14/2015] [Indexed: 11/26/2022]
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28
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Batov DV, Kartsev VN, Shtykov SN. Heat capacity, conductivity, and structural changes of water-sodium dodecylsulfate-triethanolamine-1-pentanol-1,1,2,2-tetrafluorodibromoethane microemulsions. J STRUCT CHEM+ 2015. [DOI: 10.1134/s0022476615020092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Shen L, Zhang X, Liu M, Wang Z. Microemulsion Extraction ofMonascusPigments from Nonionic Surfactant using High Polarity of Diethyl Ether as Excess Oil Phase. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.924013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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30
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Bera MK, Ellis RJ, Burton-Pye BP, Antonio MR. Structural aspects of heteropolyacid microemulsions. Phys Chem Chem Phys 2014; 16:22566-74. [DOI: 10.1039/c4cp03014a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Bera MK, Bray TH, Ellis RJ, Antonio MR. Redox Chemistry of Heteropolyacid Microemulsions. ChemElectroChem 2014. [DOI: 10.1002/celc.201402037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Effect of Bis-(2-ethylhexyl)Phosphoric Acid on Sodium Bis-(2-ethylhexyl)Phosphate Microemulsion for Selective Extraction of Non-Ferrous Metals. J SURFACTANTS DETERG 2014. [DOI: 10.1007/s11743-014-1598-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Zhou J, Zhang Q, Sun JB, Wang FQ, Zeng P. Simultaneous separation and determination of four phenylethanoid glycosides in rat plasma sample after oral administration of Cistanche salsa extract by microemulsion liquid chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 951-952:24-31. [PMID: 24508672 DOI: 10.1016/j.jchromb.2013.11.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/18/2013] [Accepted: 11/02/2013] [Indexed: 11/28/2022]
Abstract
A simple, rapid and specific method was developed to separate as well as to determine the four phenylethanoid glycosides (PhGs) (echinacoside, tubuloside B, acteoside and isoacteoside) in rat plasma after oral administration of Cistanche salsa extract by reversed phase high performance liquid chromatography using a microemulsion as the mobile phase. The separations were performed on a Zorbax Extend-C18 column at 25°C. Photodiode-array detector was conducted at 322nm and with a flow rate of 0.8mLmin(-1). The optimized microemulsion mobile phase consisted of 0.3% triethylamine in 20mM phosphoric acid at pH 6.0, 0.8% (v/v) ethyl acetate as oil phase, 1.5% (v/v) Genapol X-080 as surfactant, 2.5% (v/v) n-propanol as co-surfactant. Under the optimal conditions, the calibration curve for four PhGs was linear in the range of 10-1000ngmL(-1) with the correlation coefficients greater than 0.9994. The intra-day and inter-day precision (RSD) were below 8.64% and the limits of detection (LOD) for the four PhGs were 0.4-1.3ngmL(-1) (S/N=3). The microemulsion liquid chromatography (MELC) method was successfully applied to separate and determine the four PhGs in rat plasma after oral administration of C. salsa extract.
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Affiliation(s)
- Jun Zhou
- Department of Pharmacy, Urumqi General Hospital of PLA, Urumqi Xinjiang 830000, China
| | - Qiong Zhang
- Department of Pharmacy, Urumqi General Hospital of PLA, Urumqi Xinjiang 830000, China
| | - Jiang Bing Sun
- Department Clinical Laboratory, No. 23 Hospital of PLA, Urumqi Xinjiang 830000, China
| | - Feng Qiao Wang
- Department of Chemistry, Fourth Military Medical University, Xi'an, Shanxi 710032, China
| | - Ping Zeng
- Department of Pharmacy, Urumqi General Hospital of PLA, Urumqi Xinjiang 830000, China.
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34
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Separation of 5-Lipoxygenase Metabolites Using Cyclodextrin-Modified Microemulsion Electrokinetic Chromatography and Head Column Field-Amplified Sample Stacking. Chromatographia 2013. [DOI: 10.1007/s10337-013-2517-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Extraction of europium by sodium oleate/pentanol/heptane/NaCl microemulsion system. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1568-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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36
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Kwon TS, Baek K, Ahn Y, Lee JY, Yang JS, Yang JW. The Solubilization Characteristics of DNAPLs by Oil-Based Emulsion. SEP SCI TECHNOL 2011. [DOI: 10.1081/ss-200042654] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Tae-Soon Kwon
- Environmental Remediation Engineering Laboratory, Department of Chemical & Biomoleeular Engineering, Daejeon, Republic of Korea
| | - Kitae Baek
- Department of Environmental Engineering, Kumoh National Institute of Technology, Gyungbuk, Republic of Korea
| | - Yeonghee Ahn
- Environmental Remediation Engineering Laboratory, Department of Chemical & Biomoleeular Engineering, Daejeon, Republic of Korea
| | - Jae-Young Lee
- Environmental Remediation Engineering Laboratory, Department of Chemical & Biomoleeular Engineering, Daejeon, Republic of Korea
| | - Jung-Seok Yang
- Environmental Remediation Engineering Laboratory, Department of Chemical & Biomoleeular Engineering, Daejeon, Republic of Korea
| | - Ji-Won Yang
- Environmental Remediation Engineering Laboratory, Department of Chemical & Biomoleeular Engineering, Daejeon, Republic of Korea
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37
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Shang K, Yang YZ, Guo JX, Lu WJ, Liu F, Wang W. Extraction of cobalt by the AOT microemulsion system. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1443-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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38
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Tsukahara S, Shishino Y, Fujiwara T. Microscope measurements for the transient formation of W/O emulsions of sodium bis(2-ethylhexyl) sulfosuccinate in the dodecane/water interfacial region. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:7392-7399. [PMID: 21627084 DOI: 10.1021/la1045173] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The present study investigated the transient formation of water-in-oil (W/O) emulsions of sodium bis(2-ethylhexyl) sulfosuccinate (aerosol OT, AOT) in a dodecane/water interfacial region and the anomalous uptake of water in the dodecane phase by in situ bright-field optical microscopy and water concentration measurements in detail. The hydrodynamic radius of the individual W/O emulsions in the dodecane phase was determined to be 0.1-1.2 μm from the analysis of their diffusion behavior; they are much larger than common W/O microemulsions (a few nanometers in radius). At first, they were formed spontaneously in the dodecane/water interfacial region without shaking, and they diffused away into the dodecane phase. Then, almost all of them vanished at the interface by fusion. Their number and the water concentration in the dodecane phase increased first and then decreased gradually. The formation mechanism was discussed with estimated concentration profiles of AOT and water molecules, which suggests that larger W/O emulsions of 0.01-0.44 μm in radius can be formed in the dodecane phase near the interface (within 2 μm) because the concentration of AOT becomes lower than that of water there.
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Affiliation(s)
- Satoshi Tsukahara
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
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Lu W, Lu Y, Liu F, Shang K, Wang W, Yang Y. Extraction of gold(III) from hydrochloric acid solutions by CTAB/n-heptane/iso-amyl alcohol/Na2SO3 microemulsion. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:2166-2170. [PMID: 21236565 DOI: 10.1016/j.jhazmat.2010.12.059] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 12/12/2010] [Accepted: 12/14/2010] [Indexed: 05/30/2023]
Abstract
The extraction of Au(III) from hydrochloric acid solutions by microemulsion was studied. The extraction experiments were carried out using cetyltrimethylammonium bromide (CTAB) as surfactant and iso-amyl alcohol as co-surfactant. Au(III) was found to be extracted into the microemulsion phase due to ion pair formation such as AuCl(4)(-)CTAB(+). The influence of temperature on the extraction of Au(III) has been investigated at temperatures ranging from 288 to 313 K. Temperature was found to decrease the distribution of Au(III). Thermodynamic parameters like enthalpy and entropy of the extraction, calculated by applying Van't Hoff equation, were -36.76 kJ mol(-1) and -84.87 J mol(-1) K(-1), respectively. Furthermore, the influence of the concentrations of hydrogen ion and chloride anion on the extraction efficiency (E%) were verified. Au(III) was extracted quantitatively (E%>99%) and selectively at the whole range of HCl concentrations (0.2-5 M). Recovery of gold from electrical waste and treatment of CTAB wastewater generated from the extraction were also discussed. Thus, the extraction of Au(III) from hydrochloric acid solutions by microemulsion is an effective approach.
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Affiliation(s)
- Wenjuan Lu
- Key Laboratory for Special Functional Aggregated Materials of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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40
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Lu J, Tian J, Guo N, Wang Y, Pan Y. Microemulsion extraction separation and determination of aluminium species by spectrofluorimetry. JOURNAL OF HAZARDOUS MATERIALS 2011; 185:1107-1114. [PMID: 21036474 DOI: 10.1016/j.jhazmat.2010.10.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Revised: 09/16/2010] [Accepted: 10/05/2010] [Indexed: 05/30/2023]
Abstract
A simple and sensitive microemulsion extraction separation method was developed for the speciation of aluminium in tea samples by spectrofluorimetry. With 8-hydroxyquinoline (8-HQ) as the chelating agent and Triton X-100 Winsor II microemulsion as the extractant, separation of aluminium species in different pH solutions was achieved by microemulsion extraction. The formation of microemulsion, the conditions of extraction and determination of aluminium species were studied. The results showed that, the contents of aluminium species in tea leaves and infusions samples, such as total aluminium, total soluble aluminium, total granular aluminium, inorganic aluminium except Al-F, and (Al-F+Al-org), were obtained successfully under the optimal conditions. The limit of detection was 0.23 μg L(-1) in pH 9.5 solution, and 0.59 μg L(-1) in pH 6.0 solution respectively; the precision (RSD) for 11 replicate measurements of 10 μg L(-1) aluminium was 2.1% in pH 9.5 solution, and 2.8% in pH 6.0 solution respectively; the recoveries for the spiked samples were 96.8-103.5%. The proposed method is simple and efficient, which has been applied to the speciation of aluminium in tea samples with satisfactory results.
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Affiliation(s)
- Jusheng Lu
- School of Chemistry & Chemical Engineering, Xuzhou Normal University, 101 Shanghai Road, Xuzhou 221116, PR China.
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41
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Aurora-Prado MS, Silva CA, Tavares MFM, Altria KD. Rapid Determination of Water-Soluble and Fat-Soluble Vitamins in Commercial Formulations by MEEKC. Chromatographia 2010. [DOI: 10.1365/s10337-010-1704-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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42
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Haunschmidt M, Ortner K, Hainz K, Bradt E, Sternbauer L, Buchberger W, Klampfl CW. Investigations on the migration behavior of insulin and related synthetic analogues in CZE, MEKC and MEEKC employing different surfactants. Electrophoresis 2010; 31:1560-4. [PMID: 20358538 DOI: 10.1002/elps.200900547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The retention/migration behavior of insulin and five synthetic insulin analogues in CZE, MEKC and MEEKC employing seven different detergents within the latter two techniques has been investigated. Substantial changes in separation selectivity in MEKC could be observed for several insulins when moving from SDS to cholate-based micellar systems. Customized separations could be achieved by using mixtures of SDS and deoxycholate. A similar effect could be observed in MEEKC although the overall quality of MEEKC separations was inferior to those obtained with MEKC.
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Affiliation(s)
- Manuela Haunschmidt
- Institute of Analytical Chemistry, Johannes-Kepler-University, Linz, Austria
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43
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Role of the co-surfactant nature in soybean w/o microemulsions. J Colloid Interface Sci 2009; 337:579-85. [DOI: 10.1016/j.jcis.2009.04.091] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 04/28/2009] [Accepted: 04/29/2009] [Indexed: 11/23/2022]
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44
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45
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Cao Y, Gong W, Li N, Yin C, Wang Y. Comparison of microemulsion electrokinetic chromatography with high-performance liquid chromatography for fingerprint analysis of resina draconis. Anal Bioanal Chem 2008; 392:1003-10. [PMID: 18758761 DOI: 10.1007/s00216-008-2337-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2008] [Revised: 07/06/2008] [Accepted: 08/04/2008] [Indexed: 10/21/2022]
Abstract
Microemulsion electrokinetic chromatography (MEEKC) has been developed for fingerprint analysis of resina draconis, a substitute for sanguis draconis in the Chinese market. The microemulsion as the running buffer was made up of 3.3% (w/v) sodium dodecyl sulfate (SDS), 6.6% (w/v) n-butanol, 0.8% (w/v) n-octane, and 10 mmol/L sodium tetraborate buffer (pH 9.2), which was also used as the solvent for ultrasonic extraction of both water- and fat-soluble compounds in the traditional Chinese medicine samples. Four batches of resina draconis obtained from different pharmaceutical factories located in different geographic regions were used to establish the electrophoretic fingerprint. MEEKC was performed using a Beckman PACE/MDQ system equipped with a diode-array detector and with monitoring at 280 nm. The fingerprint of resina draconis comprised 27 common peaks within 100 min. The relative standard deviations of the relative migration time of these common peaks were less than 2.1%. Through repetitive injection of the sample solution six times in 24 h, all relative standard deviations of the migration time and peak area of loureirin A and loureirin B were less than 2.5 and 3.8%, which demonstrated that the method had good stability and reproducibility. The relative peak areas of these common peaks in the electropherograms of four batches of resina draconis were processed with two mathematical methods, the correlation coefficient and the interangle cosine, to valuate the similarity. The values of the similarity degree of all samples were more than 0.91, which showed resina draconis samples from different origins were consistent. On the other hand, high-performance liquid chromatography (HPLC) coupled with photodiode-array detection was also applied to establish the fingerprint of resina draconis. The samples were separated with a LiChrospher C(18) column using acetonitrile (solvent A) and water containing 0.1% H(3)PO(4) (solvent B) as the mobile phase in linear gradient elution mode at a flow rate of 0.6 mL/min and detection was at 280 nm. There were only 20 common peaks in the HPLC fingerprint, and the values of the similarity degree of all samples were also more than 0.91. Though the similarity results of fingerprint analysis seemed to be the same, MEEKC resulted in more common peaks and higher separation efficiency for a variety of polarities of the components than HPLC. So, MEEKC was more suitable for development of the fingerprint of resina draconis.
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Affiliation(s)
- Yuhua Cao
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
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46
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A downstream process with microemulsion extraction for microbial transformation in cloud point system. Biochem Eng J 2008. [DOI: 10.1016/j.bej.2008.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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47
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Rapid determination of water- and fat-soluble vitamins with microemulsion electrokinetic chromatography. J Chromatogr A 2008; 1193:172-7. [DOI: 10.1016/j.chroma.2008.04.016] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2008] [Revised: 03/24/2008] [Accepted: 04/09/2008] [Indexed: 11/22/2022]
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48
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Development and validation of a microemulsion electrokinetic chromatography method for patulin quantification in commercial apple juice. Food Chem Toxicol 2008; 46:2251-7. [DOI: 10.1016/j.fct.2008.02.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Revised: 02/29/2008] [Accepted: 02/29/2008] [Indexed: 11/19/2022]
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49
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Boucher J, Cengelli F, Trumbic D, Marison IW. Sorption of hydrophobic organic compounds (HOC) in rapeseed oil bodies. CHEMOSPHERE 2008; 70:1452-8. [PMID: 17942138 DOI: 10.1016/j.chemosphere.2007.08.065] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Revised: 08/28/2007] [Accepted: 08/29/2007] [Indexed: 05/20/2023]
Abstract
Oil-bodies are minute plant organelles (0.5-2.0microm diameter) consisting of an oil core surrounded by a phospholipid monolayer/proteinaceous membrane. Oil-bodies have been isolated from rapeseed seeds and demonstrated to constitute a novel type of micro-capsule suitable for the extraction of hydrophobic organic compounds from aqueous environments. Three hydrophobic pesticides: atrazine (2-chlor-4-ethyl-amino-6-isopropylamino-1,3,5-triazine), carbaryl (1-naphthyl methylcarbamate) and parathion (O,O-diethyl O-(4-nitrophenyl) phosphorothioate), as well as naphthalene and 2-phenylethanol were successfully extracted from aqueous solutions, with absorption in the inner oily core of OB as sorption mechanism. The OB membrane does not represent a barrier for the mass transfer of the compound towards the inner oily core of OB. Moreover, due to very high surface area to volume ratio, oil-bodies exhibit very good mass transfer properties compared with larger synthetic microcapsules or two-phase liquid-liquid extraction (LLE) techniques, which diminishes the need for strong agitation and avoids the formation of difficult to separate stable emulsions.
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Affiliation(s)
- J Boucher
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratory of Chemical and Biochemical Engineering, CH-1015 Lausanne, Switzerland.
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50
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12 CE in impurity profiling of drugs. CAPILLARY ELECTROPHORESIS METHODS FOR PHARMACEUTICAL ANALYSIS 2008. [DOI: 10.1016/s0149-6395(07)00012-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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