151
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Wille S, Mokrushina L, Smirnova I, Arlt W. Partition Coefficients of Alkyl Parabens and Ibuprofen in Micellar Systems. Chem Eng Technol 2010. [DOI: 10.1002/ceat.201000279] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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152
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Bioavailability of organic compounds solubilized in nonionic surfactant micelles. Appl Microbiol Biotechnol 2010; 89:523-34. [DOI: 10.1007/s00253-010-2938-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 10/01/2010] [Accepted: 10/01/2010] [Indexed: 11/24/2022]
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153
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Chinchalikar AJ, Aswal VK, Kohlbrecher J, Wagh AG. SANS study of tuning of clouding in charged micellar system. Colloid Polym Sci 2010. [DOI: 10.1007/s00396-010-2299-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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154
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Gil RA, Salonia JA, Gásquez JA, Olivieri AC, Olsina R, Martinez LD. Flow injection system for the on-line preconcentration of Pb by cloud point extraction coupled to USN–ICP OES. Microchem J 2010. [DOI: 10.1016/j.microc.2010.01.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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155
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Wang Z, Dai Z. Extractive microbial fermentation in cloud point system. Enzyme Microb Technol 2010; 46:407-18. [DOI: 10.1016/j.enzmictec.2010.02.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2009] [Accepted: 02/07/2010] [Indexed: 10/19/2022]
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156
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Mixed micelle-cloud point extraction for the analysis of penicillin residues in bovine milk by high performance liquid chromatography. Talanta 2010; 81:486-92. [DOI: 10.1016/j.talanta.2009.12.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Revised: 12/16/2009] [Accepted: 12/16/2009] [Indexed: 11/18/2022]
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157
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Separation and preconcentration of persistent organic pollutants by cloud point extraction. J Chromatogr A 2010; 1217:2306-17. [DOI: 10.1016/j.chroma.2009.11.075] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2009] [Revised: 11/23/2009] [Accepted: 11/25/2009] [Indexed: 11/22/2022]
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158
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Use of cloud point extraction for removal of nanosized copper oxide from wastewater. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11434-009-0695-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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159
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Cloud point extraction preconcentration and spectrophotometric determination of copper in food and water samples using amino acid as the complexing agent. J Food Compost Anal 2010. [DOI: 10.1016/j.jfca.2009.01.015] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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160
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Luo X, Jiang X, Tu X, Luo S, Yan L, Chen B. Determination of malachite green in fish water samples by cloud-point extraction coupled to cation-selective exhaustive injection and sweeping-MEKC. Electrophoresis 2010; 31:688-94. [DOI: 10.1002/elps.200900565] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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161
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Doroshchuk VA, Demchenko VY, Gorbachevskii AN, Chernyi AV, Kulichenko SA. Micellar extraction preconcentration of barium with phases of nonionic surfactants at the cloud point. JOURNAL OF ANALYTICAL CHEMISTRY 2009. [DOI: 10.1134/s1061934809100062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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162
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Extractive fermentation in cloud point system for lipase production by Serratia marcescens ECU1010. Appl Microbiol Biotechnol 2009; 85:1789-96. [DOI: 10.1007/s00253-009-2257-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2009] [Revised: 08/07/2009] [Accepted: 09/09/2009] [Indexed: 10/20/2022]
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163
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164
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165
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Ghaedi M, Shokrollahi A, Niknam K, Niknam E, Najibi A, Soylak M. Cloud point extraction and flame atomic absorption spectrometric determination of cadmium(II), lead(II), palladium(II) and silver(I) in environmental samples. JOURNAL OF HAZARDOUS MATERIALS 2009; 168:1022-7. [PMID: 19380196 DOI: 10.1016/j.jhazmat.2009.02.130] [Citation(s) in RCA: 174] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2009] [Revised: 02/23/2009] [Accepted: 02/23/2009] [Indexed: 05/03/2023]
Abstract
The phase-separation phenomenon of non-ionic surfactants occurring in aqueous solution was used for the extraction of cadmium(II), lead(II), palladium(II) and silver(I). The analytical procedure involved the formation of understudy metals complex with bis((1H-benzo [d] imidazol-2yl)ethyl) sulfane (BIES), and quantitatively extracted to the phase rich in octylphenoxypolyethoxyethanol (Triton X-114) after centrifugation. Methanol acidified with 1molL(-1) HNO(3) was added to the surfactant-rich phase prior to its analysis by flame atomic absorption spectrometry (FAAS). The concentration of BIES, pH and amount of surfactant (Triton X-114) was optimized. At optimum conditions, the detection limits of (3 sdb/m) of 1.4, 2.8, 1.6 and 1.4 ng mL(-1) for Cd(2+), Pb(2+), Pd(2+) and Ag(+) along with preconcentration factors of 30 and enrichment factors of 48, 39, 32 and 42 for Cd(2+), Pb(2+), Pd(2+) and Ag(+), respectively, were obtained. The proposed cloud point extraction has been successfully applied for the determination of metal ions in real samples with complicated matrix such as radiology waste, vegetable, blood and urine samples.
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166
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Gorbachevskii AN, Kushchevskaya NF, Doroshchuk VA. Electrothermal atomic-absorption determination of lead and cadmium with preliminary micellar extraction. J WATER CHEM TECHNO+ 2009. [DOI: 10.3103/s1063455x09040067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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167
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Effect of nonionic surfactant molecular structure on cloud point extraction of phenol from wastewater. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.04.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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168
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Wen X, Wu P, Chen L, Hou X. Determination of cadmium in rice and water by tungsten coil electrothermal vaporization-atomic fluorescence spectrometry and tungsten coil electrothermal atomic absorption spectrometry after cloud point extraction. Anal Chim Acta 2009; 650:33-8. [DOI: 10.1016/j.aca.2009.01.053] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2008] [Revised: 01/07/2009] [Accepted: 01/27/2009] [Indexed: 11/26/2022]
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169
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Li JL, Bai DS, Chen BH. Effects of additives on the cloud points of selected nonionic linear ethoxylated alcohol surfactants. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.06.020] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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170
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Pepper SE, Peterman DR, Tranter TJ, White BM. Detection of radionuclides in aqueous samples using cloud point extraction. J Radioanal Nucl Chem 2009. [DOI: 10.1007/s10967-009-0303-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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171
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Takagai Y, Hinze WL. Cloud Point Extraction with Surfactant Derivatization as an Enrichment Step Prior to Gas Chromatographic or Gas Chromatography−Mass Spectrometric Analysis. Anal Chem 2009; 81:7113-22. [DOI: 10.1021/ac9009963] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshitaka Takagai
- Department of Chemistry, Wake Forest University, P.O. Box 7486, Winston-Salem, North Carolina 27109, and Cluster of Science and Technology, Faculty of Symbiotic Systems Science, Fukushima University, Kanayagawa 1, Fukushima 960-1296, Japan
| | - Willie L. Hinze
- Department of Chemistry, Wake Forest University, P.O. Box 7486, Winston-Salem, North Carolina 27109, and Cluster of Science and Technology, Faculty of Symbiotic Systems Science, Fukushima University, Kanayagawa 1, Fukushima 960-1296, Japan
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172
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Liu JF, Chao JB, Liu R, Tan ZQ, Yin YG, Wu Y, Jiang GB. Cloud Point Extraction as an Advantageous Preconcentration Approach for Analysis of Trace Silver Nanoparticles in Environmental Waters. Anal Chem 2009. [DOI: 10.1021/ac900918e] [Citation(s) in RCA: 177] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing-fu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, Chemical Metrology and Analytical Science Division, National Institute of Metrology, Beijing 100013, P. R. China
| | - Jing-bo Chao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, Chemical Metrology and Analytical Science Division, National Institute of Metrology, Beijing 100013, P. R. China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, Chemical Metrology and Analytical Science Division, National Institute of Metrology, Beijing 100013, P. R. China
| | - Zhi-qiang Tan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, Chemical Metrology and Analytical Science Division, National Institute of Metrology, Beijing 100013, P. R. China
| | - Yong-guang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, Chemical Metrology and Analytical Science Division, National Institute of Metrology, Beijing 100013, P. R. China
| | - Yuan Wu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, Chemical Metrology and Analytical Science Division, National Institute of Metrology, Beijing 100013, P. R. China
| | - Gui-bin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, Chemical Metrology and Analytical Science Division, National Institute of Metrology, Beijing 100013, P. R. China
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173
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A Closed Concept of Extractive Whole Cell Microbial Transformation of Benzaldehyde into l-Phenylacetylcarbinol by Saccharomyces cerevisiae in Novel Polyethylene-Glycol-Induced Cloud-Point System. Appl Biochem Biotechnol 2009; 160:1865-77. [DOI: 10.1007/s12010-009-8695-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Accepted: 06/15/2009] [Indexed: 10/20/2022]
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174
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Buggert M, Cadena C, Mokrushina L, Smirnova I, Maginn EJ, Arlt W. COSMO-RS Calculations of Partition Coefficients: Different Tools for Conformation Search. Chem Eng Technol 2009. [DOI: 10.1002/ceat.200800654] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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175
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Kungsanant S, Kitiyanan B, Rirksomboon T, Osuwan S, Scamehorn JF. Recovery of nonionic surfactant from VOC-contaminated coacervate phase solutions by co-current vacuum stripping: Effect of surfactant concentration, temperature, and solute type. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2009.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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176
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Mashayekhi F, Meyer AS, Shiigi SA, Nguyen V, Kamei DT. Concentration of mammalian genomic DNA using two-phase aqueous micellar systems. Biotechnol Bioeng 2009; 102:1613-23. [DOI: 10.1002/bit.22188] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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177
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Dupont-Leclercq L, Giroux S, Parant S, Khoudour L, Henry B, Rubini P. Complexation of Cu(II) by original tartaric acid-based ligands in nonionic micellar media: thermodynamic study and applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:3450-3458. [PMID: 19708239 DOI: 10.1021/la803931g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The complexation of Cu(II) with original alkylamidotartaric acids (C(x)T) is investigated in homogeneous aqueous medium and in the presence of nonionic micelles of Brij 58 (C16EO20), thanks to various analytical techniques such as NMR self-diffusion experiments, CD and UV-vis spectroscopy, ESI mass spectrometry, pHmetry and micellar-enhanced ultrafiltration (MEUF). First, a complete speciation study proves the formation of dimeric complexes in water and provides their formation constants. Second, a similar study is led in the presence of nonionic micelles. It underlines a modification of the apparent equilibrium constants in micellar medium and demonstrates that the structure of the complexes is slightly modified in the presence of micelles. This thermodynamic and structural study is applied to modelize the evolution of the extraction yields of Cu(II) by the micelles as a function of pH and to identify the complexes extracted in the micelles. The effects of the chain length of the ligand (C3T vs C8T) on the solubilization properties are put into relief and discussed. Anionic species are proved to be more incorporated in the nonionic micelles than the cationic species. The extracting system constituted of octylamidotartaric acid (CsT) solubilized in nonionic micelles of Brij 58 is demonstrated to be very efficient for the extraction of Cu(II) by MEUF, this technique being an interesting green alternative to traditional solvent extraction.
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Affiliation(s)
- Laurence Dupont-Leclercq
- Groupe C2M2, UMR SRSMC 7565 CNRS-Université Henri Poincaré, Nancy-Université, BP 239, F-54506 Vandoeuvre-lès-Nancy Cedex, France
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178
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Development of efficient method for preconcentration and determination of copper, nickel, zinc and iron ions in environmental samples by combination of cloud point extraction and flame atomic absorption spectrometry. OPEN CHEM 2009. [DOI: 10.2478/s11532-008-0102-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractA cloud point extraction procedure for the preconcentration of copper, nickel, iron and zinc ions in various samples has been described. Analyte ions in aqueous phase are complexed with 3-((indolin-3-yl)(phenyl)methyl)indoline (IYPMI) and following centrifugation quantitatively extracted to the aqueous phase rich in Triton X-114. The surfactant-rich phase was dissolved in 2.0 mol L−1 HNO3 in methanol prior to metal content determination by flame atomic absorption spectrometry (FAAS). The effects of some parameters including, the concentrations of IYPMI, Triton X-114 and HNO3, bath temperature, centrifuge rate and time were investigated on the recoveries of analyte ions. At optimum conditions, the detection limits of (3 SDb m−1) of 1.6, 2.8, 2.1 and 1.1 ng mL−1 for Cu2+, Fe3+, Ni2+ and Zn2+ along with preconcentration factors of 30 and enrichment factor of 48, 39, 34 and 52 for Cu2+, Ni2+, Fe3+ and Zn2+ respectively, were obtained. The proposed cloud point extraction has been successfully applied for the determination of metal ions in real samples with complicated matrix such as biological, soil and blood samples with high efficiency.
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179
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Liu W, Bi K, Liu X, Zhao J, Chen X. Cloud-Point Extraction Combined with LC–MS for Analysis of Memantine in Rat Plasma. Chromatographia 2009. [DOI: 10.1365/s10337-009-1027-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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180
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Santalad A, Srijaranai S, Burakham R, Glennon JD, Deming RL. Cloud-point extraction and reversed-phase high-performance liquid chromatography for the determination of carbamate insecticide residues in fruits. Anal Bioanal Chem 2009; 394:1307-17. [DOI: 10.1007/s00216-009-2663-6] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2008] [Revised: 01/15/2009] [Accepted: 01/28/2009] [Indexed: 11/30/2022]
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181
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Ojeda CB, Rojas FS. Separation and preconcentration by a cloud point extraction procedure for determination of metals: an overview. Anal Bioanal Chem 2009; 394:759-82. [DOI: 10.1007/s00216-009-2660-9] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Accepted: 01/27/2009] [Indexed: 11/28/2022]
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182
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Ghaedi M, Shokrollahi A, Niknam K, Soylak M. Cloud Point Extraction of Copper, Zinc, Iron and Nickel in Biological and Environmental Samples by Flame Atomic Absorption Spectrometry. SEP SCI TECHNOL 2009. [DOI: 10.1080/01496390802437164] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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183
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Becker J, Thomas O, Franzreb M. Protein separation with magnetic adsorbents in micellar aqueous two-phase systems. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2008.05.017] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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184
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Liu JF, Liu R, Yin YG, Jiang GB. Triton X-114 based cloud point extraction: a thermoreversible approach for separation/concentration and dispersion of nanomaterials in the aqueous phase. Chem Commun (Camb) 2009:1514-6. [PMID: 19277374 DOI: 10.1039/b821124h] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Capable of preserving the sizes and shapes of nanomaterials during the phase transferring, Triton X-114 based cloud point extraction provides a general, simple, and cost-effective route for reversible concentration/separation or dispersion of various nanomaterials in the aqueous phase.
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Affiliation(s)
- Jing-fu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 2871, Beijing 100085, China
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185
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186
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Liu G, Xie B, Fu D, Wang Y, Fu Q, Wang D. Preparation of nearly monodisperse microcapsules with controlled morphology by in situ polymerization of a shell layer. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b901102a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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187
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Kushchevskaya NF, Gorbachevskii AN, Doroshchuk VA, Kulichenko SA. Micellar extraction concentration of microcomponents by phases of nonionic SAS at the cloud point. J WATER CHEM TECHNO+ 2008. [DOI: 10.3103/s1063455x08050068] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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188
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Taechangam P, Scamehorn JF, Osuwan S, Rirksomboon T. Continuous Cloud Point Extraction of Volatile Organic Contaminants from Wastewater in a Multi-Stage Rotating Disc Contactor: Effect of Structure and Concentration of Solutes. SEP SCI TECHNOL 2008. [DOI: 10.1080/01496390802282339] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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189
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Kungsanant S, Kitiyanan B, Rirksomboon T, Osuwan S, Scamehorn JF. Toluene removal from nonionic surfactant coacervate phase solutions by vacuum stripping. Sep Purif Technol 2008. [DOI: 10.1016/j.seppur.2008.05.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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190
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191
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Combination of cloud point extraction and flame atomic absorption spectrometry for preconcentration and determination of trace iron in environmental and biological samples. OPEN CHEM 2008. [DOI: 10.2478/s11532-008-0049-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AbstractIn the presented work, the conditions for cloud point extraction of iron from aqueous solutions using 7-iodo-8-hydroxyquinolin-5-sulphonic acid (Ferron) was investigated and optimized. The procedure is based on the separation of its ferron complex into the micellar media by adding the surfactant Triton X-114. After phase separation, the surfactant-rich phase was dissolved with 1.0 M HNO3 in methanol. Iron was determined by flame atomic absorption spectrometry. Optimization of the pH, ligand and surfactant quantities, incubation time, temperature, viscosity, sample volume, and interfering ions were investigated. The effects of the matrix ions were also examined. The detection limits for three times the standard deviations of the blank for iron was 0.4 ng m L-1, enrichment factor of 19.6 and preconcentration factor of 30 could be achieved. The validity of cloud point extraction was checked by employing real samples including soil, blood, spinach, milk, meat, liver and orange juice samples using the standard addition method, which gave satisfactory results.In the presented work, the conditions for cloud point extraction of iron from aqueous solutions using 7-iodo-8-hydroxyquinolin-5-sulphonic acid (Ferron) was investigated and optimized. The procedure is based on the separation of its ferron complex into the micellar media by adding the surfactant Triton X-114. After phase separation, the surfactant-rich phase was dissolved with 1.0 M HNO3 in methanol. Iron was determined by flame atomic absorption spectrometry. Optimization of the pH, ligand and surfactant quantities, incubation time, temperature, viscosity, sample volume, and interfering ions were investigated. The effects of the matrix ions were also examined. The detection limits for three times the standard deviations of the blank for iron was 0.4 ng m L−1, enrichment factor of 19.6 and preconcentration factor of 30 could be achieved. The validity of cloud point extraction was checked by employing real samples including soil, blood, spinach, milk, meat, liver and orange juice samples using the standard addition method, which gave satisfactory results.
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192
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Wei W, Yin XB, He XW. pH-mediated dual-cloud point extraction as a preconcentration and clean-up technique for capillary electrophoresis determination of phenol and m-nitrophenol. J Chromatogr A 2008; 1202:212-5. [DOI: 10.1016/j.chroma.2008.07.015] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2008] [Revised: 07/01/2008] [Accepted: 07/08/2008] [Indexed: 11/17/2022]
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193
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Kulichenko SA, Doroshchuk VA, Starova VS. Micellar phases based on sodium dodecyl sulfate for preconcentration. RUSS J APPL CHEM+ 2008. [DOI: 10.1134/s1070427208080053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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194
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Weschayanwiwat P, Kunanupap O, Scamehorn JF. Benzene removal from waste water using aqueous surfactant two-phase extraction with cationic and anionic surfactant mixtures. CHEMOSPHERE 2008; 72:1043-1048. [PMID: 18514760 DOI: 10.1016/j.chemosphere.2008.03.065] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2008] [Revised: 03/28/2008] [Accepted: 03/28/2008] [Indexed: 05/26/2023]
Abstract
A novel separation technique known as an aqueous surfactant two-phase (ASTP) extraction is a promising method to remove organic contaminants from wastewater. When cationic and anionic surfactants are mixed at certain surfactant concentrations and compositions, the solution separates into two immiscible aqueous phases. One is the surfactant-rich and the other is the surfactant-dilute phase. The organic contaminants will solubilize into the surfactant aggregates and concentrate in the small volume surfactant-rich phase. The other phase contains only small amount of surfactants and contaminants as the treated water. Most ASTP studies have used nonionic surfactants above the cloud point. Mixtures of anionic and cationic surfactants can also exhibit aqueous-aqueous phase separation and can be used in the ASTP extraction process. The phase behavior and performance of ASTP extraction using cationic surfactant dodecyltrimethylammonium bromide (DTAB) and anionic surfactant alkyldiphenyloxide di-sulfonate (DPDS) to extract benzene from wastewater was investigated in batch experiments. It was found that phase separation only occurs over a narrow range of molar ratios of DTAB:DPDS from 1.6:1 to 2.4:1. In this study, a 2:1 molar ratio of DTAB:DPDS at which there is no net charge in the surfactant aggregates show the highest extraction efficiency and lowest critical micelle concentration value with greatest synergism (highest negative values of the micellar interaction parameter). At a total surfactant concentration of 50mM, the benzene partition ratio is 48 and 72% of the benzene is extracted into the surfactant-rich phase solution in a single stage extraction, which is superior performance compared to ASTP extraction using nonionic surfactants.
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Affiliation(s)
- Punjaporn Weschayanwiwat
- National Center of Excellence for Environmental and Hazardous Waste Management, Chulalongkorn University, Bangkok 10330, Thailand.
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195
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Tavakoli L, Yamini Y, Ebrahimzadeh H, Shariati S. Homogeneous liquid–liquid extraction for preconcentration of polycyclic aromatic hydrocarbons using a water/methanol/chloroform ternary component system. J Chromatogr A 2008; 1196-1197:133-8. [DOI: 10.1016/j.chroma.2008.04.036] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Revised: 03/28/2008] [Accepted: 04/01/2008] [Indexed: 11/25/2022]
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196
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Liang P, Sang H. Speciation of chromium in water samples with cloud point extraction separation and preconcentration and determination by graphite furnace atomic absorption spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2008; 154:1115-1119. [PMID: 18082323 DOI: 10.1016/j.jhazmat.2007.11.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2007] [Revised: 11/05/2007] [Accepted: 11/06/2007] [Indexed: 05/25/2023]
Abstract
A novel method has been developed for the speciation of chromium in natural water samples based on cloud point extraction (CPE) separation and preconcentration, and determination by graphite furnace atomic absorption spectrometry (GFAAS). In this method, Cr(III) reacts with 1-phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP) yielding a hydrophobic complex, which then is entrapped in the surfactant-rich phase, whereas Cr(VI) remained in aqueous phase. Thus, separation of Cr(III) and Cr(VI) could be realized. Total chromium was determined after the reduction of Cr(VI) to Cr(III) by using ascorbic acid as reducing reagent. PMBP was used not only as chelating reagent in CPE procedure, but also as chemical modifier in GFAAS determination of chromium. The detection limit for Cr(III) was 21 ng L(-1) with an enrichment factor of 42, and the relative standard deviation was 3.5% (n=7, c=10 ng mL(-1)). The proposed method has been applied to the speciation of chromium in natural water samples with satisfactory results.
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Affiliation(s)
- Pei Liang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China.
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197
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Sang H, Liang P, Du D. Determination of trace aluminum in biological and water samples by cloud point extraction preconcentration and graphite furnace atomic absorption spectrometry detection. JOURNAL OF HAZARDOUS MATERIALS 2008; 154:1127-1132. [PMID: 18082326 DOI: 10.1016/j.jhazmat.2007.11.018] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2007] [Revised: 11/07/2007] [Accepted: 11/07/2007] [Indexed: 05/25/2023]
Abstract
A cloud point extraction (CPE) method for the preconcentration of trace aluminum prior to its determination by graphite furnace atomic absorption spectrometry (GFAAS) has been developed. The CPE method is based on the complex of Al(III) with 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP), and then entrapped in non-ionic surfactant Triton X-114. PMBP was used not only as chelating reagent in CPE preconcentration, but also as chemical modifier in GFAAS determination. The main factors affecting CPE efficiency, such as pH of sample solution, concentration of PMBP and Triton X-114, equilibration temperature and time, were investigated in detail. An enrichment factor of 37 was obtained for the preconcentration of Al(III) with 10 mL solution. Under the optimal conditions, the detection limit of this method for Al(III) is 0.09 ng mL(-1), and the relative standard deviation is 4.7% at 10 ng mL(-1) Al(III) level (n=7). The proposed method has been applied for determination of trace amount of aluminum in biological and water samples with satisfactory results.
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Affiliation(s)
- Hongbo Sang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
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198
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Yao B, Yang L. Stirring-Assisted Cloud-Point Extraction of Polycyclic Aromatic Hydrocarbons. Ind Eng Chem Res 2008. [DOI: 10.1021/ie071618l] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bingjia Yao
- School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Li Yang
- School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, China
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199
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Whole cell microbial transformation in cloud point system. J Ind Microbiol Biotechnol 2008; 35:645-56. [DOI: 10.1007/s10295-008-0345-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2007] [Revised: 02/15/2008] [Accepted: 03/20/2008] [Indexed: 10/22/2022]
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200
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Yao B, Yang L. Pilot‐scale Ultrasonic Assisted Cloud Point Extraction of Polycyclic Aromatic Hydrocarbons from Polluted Water. SEP SCI TECHNOL 2008. [DOI: 10.1080/01496390801955588] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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