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Algar L, Sicilia MD, Rubio S. Ribbon-shaped supramolecular solvents: Synthesis, characterization and potential for making greener the microextraction of water organic pollutants. Talanta 2023; 255:124227. [PMID: 36587431 DOI: 10.1016/j.talanta.2022.124227] [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: 11/04/2022] [Revised: 12/21/2022] [Accepted: 12/26/2022] [Indexed: 12/29/2022]
Abstract
Liquid-liquid microextraction (LLME) techniques have experienced a tremendous growth over the last years but still face major challenges related to the use of more efficient and environmentally friendly solvents. Supramolecular solvents (SUPRASs) have proved outstanding efficiency in LLME, but many of the experimental conditions required for SUPRAS formation and/or application cannot be considered green or experimentally convenient. This paper was intended to make greener both SUPRAS formation and their application to the LLME of low-concentration organic pollutants in environmental waters. For this purpose, a variety of SUPRASs were produced at room temperature by simply mixing alkyl phosphonates (A6-12PO3H- and A6-12PO3-2) and tetrahexylammonium (He4N+) ions in aqueous media. Among them, the SUPRASs produced from decyl hydrogen phosphonate (DePO3H-) and He4N+ allowed, for the first time, the development of SUPRAS-based LLMEs where the SUPRAS previously synthesized was added to the liquid sample, instead of being formed in situ as usual, which was proved particularly advantageous for analyses involving large sample/SUPRAS volume ratios. At near equimolar amounts of DePO3H- and He4N+, the amphiphile arranged in the SUPRAS as planar ribbons consisting of water (21 ± 3%, w/v) and DePO3H- and He4N+ in the concentration range 1.0-1.4 M. The application of these SUPRASs to LLMEs was proved by extracting carcinogenic polycyclic aromatic hydrocarbons (CPAHs) from drinking (tap and bottled) and natural (river, reservoir and underground) water (recoveries between 84 and 117% with standard deviations varying between 1 and 14%). The developed method was simple (it only required the addition of 500 μL of SUPRAS to 75 mL of sample, stirring and centrifugation), sensitive (method quantitation limits were below the maximum allowed limits set by the EU; were 0.6-7.1 ng L-1) and selective (SUPRAS extracts were directly analyzed by liquid chromatography-fluorimetry). This research proves that SUPRASs can be operationally used in LLMEs similarly to conventional solvents, which should favor their routine application in high-sample throughput laboratories.
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Affiliation(s)
- Lourdes Algar
- Departamento de Química Analítica, Instituto Químico para la Energía y Medio Ambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, Spain
| | - María Dolores Sicilia
- Departamento de Química Analítica, Instituto Químico para la Energía y Medio Ambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, Spain.
| | - Soledad Rubio
- Departamento de Química Analítica, Instituto Químico para la Energía y Medio Ambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, Spain
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2
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Characterization of a new sustainable supramolecular solvent and application to the determination of oxy-PAHs in meat, seafood and fish tissues. Food Chem 2022; 405:134731. [DOI: 10.1016/j.foodchem.2022.134731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 11/21/2022]
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3
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Bahrami M, Haji Shabani AM, Dadfarnia S, Samadzadeh Yazdi MR. Response surface methodology optimization of supramolecular dispersive liquid‐liquid microextraction‐solidified floating organic drop of brilliant green and its spectrophotometric determination. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mohammad Bahrami
- Department of Chemistry, Faculty of Science Yazd University Yazd Iran
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4
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Xu X, Fang L, Lv F, Liu R, Huang X, Huang W, Long C. A dispersive liquid-liquid microextraction method for determination of bongkrekic acid in plasma by LC-MS/MS. J LIQ CHROMATOGR R T 2021. [DOI: 10.1080/10826076.2021.1905660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xiumin Xu
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Lei Fang
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Fen Lv
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Rui Liu
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Xiangdong Huang
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Weixiong Huang
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Chaoyang Long
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
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5
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Twenty years of supramolecular solvents in sample preparation for chromatography: achievements and challenges ahead. Anal Bioanal Chem 2020; 412:6037-6058. [PMID: 32206847 DOI: 10.1007/s00216-020-02559-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/20/2020] [Accepted: 02/28/2020] [Indexed: 02/06/2023]
Abstract
Supramolecular solvents (SUPRAS) have progressively become a suitable alternative to organic solvents for sample preparation in chromatographic analysis. The inherent properties of these nanostructured solvents (e.g. different polarity microenvironments, multiple binding sites, possibility of tailoring their properties, etc.) offer multiple opportunities for the development of innovative sample treatment platforms not approachable by conventional solvents. In this review, major achievements attained in the combination SUPRAS-chromatography in the last 20 years as well as the challenges that should be addressed in the near future are critically discussed. Among achievements, particular attention is paid to the theoretical and practical knowledge gained that has helped make substantial progress in the area. In this respect, advances in the understanding of the mechanisms involved in SUPRAS formation and SUPRAS-solute interactions driving extractions are discussed, with a view to the setting up of knowledge-based extraction procedures. Likewise, the strategies followed to improve the compatibility of SUPRAS extracts with liquid and gas chromatography and adapt SUPRAS-based extractions to different formats are presented. Ongoing efforts to apply SUPRAS in multicomponent extractions and synthesize tailored SUPRAS for the development of innovative sample treatments are highlighted. Among challenges identified, discussion is focused on the automation of SUPRAS-based sample treatment and the elucidation of SUPRAS nanostructures, which are considered essential for their acceptance in routine labs and the design of tailored SUPRAS with programmed functions. Graphical abstract.
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6
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Recent advances in liquid-phase microextraction techniques for the analysis of environmental pollutants. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.08.014] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Photodegradation of fluorene in aqueous solution: Identification and biological activity testing of degradation products. J Chromatogr A 2016; 1442:118-28. [DOI: 10.1016/j.chroma.2016.03.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 01/26/2016] [Accepted: 03/06/2016] [Indexed: 11/18/2022]
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8
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Luna FMT, Pontes Filho AA, Trindade ED, Cavalcante CL. Rapid assessment of total and polycyclic aromatic contents in heavy oils. ENVIRONMENTAL MONITORING AND ASSESSMENT 2016; 188:215. [PMID: 26956013 DOI: 10.1007/s10661-016-5213-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 03/01/2016] [Indexed: 06/05/2023]
Abstract
The monitoring of the content of polycyclic aromatic hydrocarbons (PAHs) is important for evaluating heavy oil products, especially those most likely to cause environmental impacts. In this study, a comparison between samples of heavy petroleum fractions, using different methods, was carried out. The calculation of carbon distribution and polycyclic aromatic contents was compared with other methods using Fourier transform infrared spectroscopy (FTIR). Therefore, it was possible to quickly estimate the aromatic content by the FTIR method, and the results showed consistency with those obtained through traditional methods. A rapid method, using extraction with dimethyl sulfoxide followed by FTIR measurements, was proposed and shown as particularly useful and reliable for a quick quantification of the PAH content, when compared to the traditional IP 346 method. Furthermore, the difference in total aromatic and PAH concentrations may be more clearly established. This rapid method may be used for the evaluation of PAH content in samples obtained from studies for their removal from complex heavy oil fractions.
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Affiliation(s)
- F Murilo T Luna
- Departamento de Engenharia Química, Grupo de Pesquisa em Separações por Adsorção-GPSA, Universidade Federal do Ceará, Campus do Pici, 709, Fortaleza, CE, 60.455-900, Brasil
| | - Antonio A Pontes Filho
- Departamento de Engenharia Química, Grupo de Pesquisa em Separações por Adsorção-GPSA, Universidade Federal do Ceará, Campus do Pici, 709, Fortaleza, CE, 60.455-900, Brasil
| | - Eduardo D Trindade
- Petrobras/Cenpes, Ilha do Fundão, Rio de Janeiro, RJ, 21.949-900, Brasil
| | - Celio L Cavalcante
- Departamento de Engenharia Química, Grupo de Pesquisa em Separações por Adsorção-GPSA, Universidade Federal do Ceará, Campus do Pici, 709, Fortaleza, CE, 60.455-900, Brasil.
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Santana JL, Massone CG, Valdés M, Vazquez R, Lima LA, Olivares-Rieumont S. Occurrence and Source Appraisal of Polycyclic Aromatic Hydrocarbons (PAHs) in Surface Waters of the Almendares River, Cuba. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 69:143-152. [PMID: 25736902 DOI: 10.1007/s00244-015-0136-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 02/01/2015] [Indexed: 06/04/2023]
Abstract
In this work, 14 polycyclic aromatic hydrocarbons (PAHs) included in the United States Environmental Protection Agency pollutant priority list were analyzed in the surface water of the upper urbanized part of Almendares River, the most important water course in Havana, Cuba. Surface water from five sampling sites was collected at the end of dry season and analyzed by high-performance liquid chromatography-fluorescence detection method after solid phase extraction procedure. Total PAHs concentrations varied from 836 to 15 811 ng L(-1) with a geometric mean value of 2512 ng L(-1). PAH typology was dominated by low molecular-weight PAHs (2- to 3-ring components). Pollutant source appraisal was determined by diagnostic ratios method in five sampling sites. Factor analysis of normalized samples was used to concentration identified two factors as the main significant pollutant sources and to cluster similar sampling sites corresponding to petrogenic and combustion inputs, respectively. Ecological risks were considered. For animal aquatic life, acute toxicity values exceed the permissible values in the more-polluted sampling sites.
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Affiliation(s)
- Jorge Luis Santana
- Facultad de Medio Ambiente, Instituto Superior de Tecnologia y Ciencias Aplicadas, La Habana, Cuba,
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10
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Alarfaj NA, El-Tohamy MF. Applications of micelle enhancement in luminescence-based analysis. LUMINESCENCE 2014; 30:3-11. [PMID: 24802358 DOI: 10.1002/bio.2694] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 02/24/2014] [Accepted: 03/26/2014] [Indexed: 11/07/2022]
Abstract
Micelles are self-assembled aggregates that arrange themselves into spheres in aqueous media. When the surfactant concentration reaches the critical micelle concentration, extensive aggregation of the surfactant monomers occurs to form micelles. A micelle has both a hydrophilic and a hydrophobic part. This allows them to form a spherical shape and for their glycolipid and phospholipid components to form lipid bilayers. The importance of micelles is increasing because of their wide analytical applications. Recently, colloidal carrier systems have received much attention in the field of analytical chemistry, especially in luminescence enhancement applications.
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Affiliation(s)
- Nawal A Alarfaj
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh, 11495, Saudi Arabia
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11
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Ferey L, Delaunay N, Rutledge DN, Huertas A, Raoul Y, Gareil P, Vial J, Rivals I. An experimental design based strategy to optimize a capillary electrophoresis method for the separation of 19 polycyclic aromatic hydrocarbons. Anal Chim Acta 2014; 820:195-204. [DOI: 10.1016/j.aca.2014.02.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 02/19/2014] [Accepted: 02/24/2014] [Indexed: 11/29/2022]
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12
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Melnyk A, Wolska L, Namieśnik J. Coacervative extraction as a green technique for sample preparation for the analysis of organic compounds. J Chromatogr A 2014; 1339:1-12. [DOI: 10.1016/j.chroma.2014.02.082] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 02/10/2014] [Accepted: 02/26/2014] [Indexed: 11/28/2022]
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13
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Spietelun A, Marcinkowski Ł, de la Guardia M, Namieśnik J. Green aspects, developments and perspectives of liquid phase microextraction techniques. Talanta 2014; 119:34-45. [DOI: 10.1016/j.talanta.2013.10.050] [Citation(s) in RCA: 250] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 10/21/2013] [Accepted: 10/22/2013] [Indexed: 02/05/2023]
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14
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Chaiphet T, Bunkoed O, Thammakhet C, Thavarungkul P, Kanatharana P. A novel microextractor stick (polyaniline/zinc film/stainless steel) for polycyclic aromatic hydrocarbons in water. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2014; 49:882-891. [PMID: 24766589 DOI: 10.1080/10934529.2014.893791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel microextractor stick (MES) has been developed for the determination of trace amounts of polycyclic aromatic hydrocarbons (PAHs) in water samples. The proposed MES was prepared by electrodepositing a Zn-film onto a stainless steel stick followed by a coating with polyaniline (PANI) sorptive layers. This PANI/Zn-film/stainless steel stick produced a large surface area, provided a high extraction efficiency (82.0 ± 6.2% to 111.0 ± 7.5% recovery) of spiked chrysene (Chry) and benzo(a)pyrene (BaP). This MES is cost-effective, easy to prepare, robust and provides a good stick-to-stick reproducibility (n = 10) with a relative standard deviation of less than 10%. The effect of various parameters on the efficiency of extraction of PAHs were optimized, including the extraction time, extraction and desorption stirring speeds, volume of desorption solvent and desorption time. Under the optimum conditions, the limit of detection (S/N ≥ 3) and limit of quantification (S/N ≥ 10) of both Chry and BaP were 0.05 and 0.12 μg L(-1), respectively. The developed MES was successfully applied to determine PAHs in real water samples.
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Affiliation(s)
- Thitiphan Chaiphet
- a Trace Analysis and Biosensor Research Center , Prince of Songkla University , Hat Yai , Songkhla , Thailand
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15
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Qi W, Liu H, Pernet-Coudrier B, Qu J. Polycyclic aromatic hydrocarbons in wastewater, WWTPs effluents and in the recipient waters of Beijing, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:4254-4260. [PMID: 23292225 DOI: 10.1007/s11356-012-1435-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 12/13/2012] [Indexed: 06/01/2023]
Abstract
In this study, surface water samples from the Wenyu River and the North Canal, effluent from major wastewater treatment plants (WWTPs) in Beijing, and wastewater from open sewers that discharge directly into the river system were collected and analyzed for 16 priority USEPA polycyclic aromatic hydrocarbons (PAHs). Concentrations of these 16 PAHs ranged from 193 to 1790 ng/L in river surface waters, 245 to 404 ng/L in WWTP effluents, and 431 to 2860 ng/L in the wastewater from the small sewers. The WWTP effluent was the main contributor of dissolved PAHs to the river, while wastewater from the small sewers contributed both dissolved and suspended particulate matter-associated PAH to the river as indicated by the high dissolved organic carbon and suspended particulate matter contents in the wastewater. Although the flow from each open sewer was small, a PAH discharge as high as 44 kg/year could occur into the river from these types of sewers. This amount was equivalent to about 22 % of the PAH loads discharged into the North Canal downstream from Beijing, whereas the remainder was mainly released by the major WWTPs in Beijing.
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Affiliation(s)
- Weixiao Qi
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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16
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Moradi M, Yamini Y, Tayyebi M, Asiabi H. Ultrasound-assisted liquid-phase microextraction based on a nanostructured supramolecular solvent. Anal Bioanal Chem 2013; 405:4235-43. [DOI: 10.1007/s00216-013-6810-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 12/25/2012] [Accepted: 01/30/2013] [Indexed: 11/30/2022]
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17
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Solid phase extraction as a cleanup step before microextraction of diclofenac and mefenamic acid using nanostructured solvent. Talanta 2013; 105:173-8. [DOI: 10.1016/j.talanta.2012.11.035] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 11/14/2012] [Accepted: 11/15/2012] [Indexed: 11/18/2022]
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18
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Enantiomer-specific determination of hexabromocyclododecane in fish by supramolecular solvent-based single-step sample treatment and liquid chromatography–tandem mass spectrometry. Anal Chim Acta 2012; 752:62-8. [DOI: 10.1016/j.aca.2012.09.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 09/20/2012] [Accepted: 09/22/2012] [Indexed: 10/27/2022]
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19
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Han D, Tang B, Ri Lee Y, Ho Row K. Application of ionic liquid in liquid phase microextraction technology. J Sep Sci 2012; 35:2949-61. [DOI: 10.1002/jssc.201200486] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 07/15/2012] [Accepted: 07/15/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Dandan Han
- College of Public Health; Hebei University; Baoding China
- Department of Chemical Engineering; Inha University; Incheon Korea
| | - Baokun Tang
- Department of Chemical Engineering; Inha University; Incheon Korea
| | - Yu Ri Lee
- Department of Chemical Engineering; Inha University; Incheon Korea
| | - Kyung Ho Row
- Department of Chemical Engineering; Inha University; Incheon Korea
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20
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Tayyebi M, Yamini Y, Moradi M. Reverse micelle-mediated dispersive liquid-liquid microextraction of 2,4-dichlorophenoxyacetic acid and 4-chloro-2-methylphenoxyacetic acid. J Sep Sci 2012; 35:2491-8. [DOI: 10.1002/jssc.201200150] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 04/26/2012] [Accepted: 04/26/2012] [Indexed: 11/11/2022]
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21
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Jafarvand S, Shemirani F. Supramolecular-based dispersive liquid-liquid microextraction: A novel sample preparation technique utilizes coacervates and reverse micelles. J Sep Sci 2011; 34:455-61. [DOI: 10.1002/jssc.201000630] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Revised: 11/30/2010] [Accepted: 11/30/2010] [Indexed: 11/09/2022]
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22
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Supramolecular solvents in the extraction of organic compounds. A review. Anal Chim Acta 2010; 677:108-30. [DOI: 10.1016/j.aca.2010.07.027] [Citation(s) in RCA: 215] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2010] [Revised: 07/14/2010] [Accepted: 07/16/2010] [Indexed: 11/17/2022]
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23
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López-Jiménez FJ, Rubio S, Pérez-Bendito D. Supramolecular solvent-based microextraction of Sudan dyes in chilli-containing foodstuffs prior to their liquid chromatography-photodiode array determination. Food Chem 2010. [DOI: 10.1016/j.foodchem.2009.12.081] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Yao C, Twu P, Anderson JL. Headspace Single Drop Microextraction Using Micellar Ionic Liquid Extraction Solvents. Chromatographia 2010. [DOI: 10.1365/s10337-010-1675-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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25
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Reverse micelle coacervate-based extraction combined with electrothermal atomic absorption spectrometry for the determination of arsenic in water and oyster tissue samples. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0343-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Analytical application of surface-affinity polymerized vesicular membranes to trace metal analysis by electrothermal atomic absorption spectrometry. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0314-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Determination of benzimidazolic fungicides in fruits and vegetables by supramolecular solvent-based microextraction/liquid chromatography/fluorescence detection. Anal Chim Acta 2009; 650:207-13. [DOI: 10.1016/j.aca.2009.07.056] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Revised: 07/21/2009] [Accepted: 07/23/2009] [Indexed: 11/21/2022]
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