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Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2014
In this work, rapidly synergistic cloud point extraction (RS-CPE) and ultrasound-assisted cloud point extraction (UA-CPE) were firstly compared and coupled with spectrophotometer for selenium preconcentration and detection. The established RS-CPE pretreatment was simple, rapid and high effective.
Xiaodong Wen
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In this work, rapidly synergistic cloud point extraction (RS-CPE) and ultrasound-assisted cloud point extraction (UA-CPE) were firstly compared and coupled with spectrophotometer for selenium preconcentration and detection. The established RS-CPE pretreatment was simple, rapid and high effective.
Xiaodong Wen
exaly +3 more sources
Innovative approaches in cloud-point extraction
Journal of Chromatography A, 2023Cloud-point extraction (CPE) is a pre-treatment technique for the extraction and preconcentration of different chemical compounds, such as metal ions, pesticides, drugs, phenols, vitamins etc., from various samples. CPE is based on the phenomenon of two phases (micellar and aqueous) forming after the heating of an aqueous isotropic solution of a non ...
Radoslav Halko +2 more
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Cloud Point Extraction of Direct Yellow
Environmental Science & Technology, 2005The cloud point separation of Direct Yellow from micellar solution of various nonionic surfactants, containing a polyoxyethylene chain, was studied. The separation of dyes is an important environmental problem. Moreover, such separation can also be considered as a preliminary step for further studies of biochemical recovery. Some dyes can be considered
Elzbieta, Tatara +4 more
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Extractive microbial fermentation in cloud point system
Enzyme and Microbial Technology, 2010Extractive microbial fermentation of organic compounds in liquid-liquid two-phase systems is a potential strategy to overcome the limitations of microbial fermentation in an aqueous solution, such as low substrate solubility, substrate/product inhibition and product further degradation.
Zhilong, Wang, Zewen, Dai
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Cloud point extraction of microalgae cultures
Separation and Purification Technology, 2013The micellar in situ extraction of hydrophobic compounds from microalgae cultures (Chlamydomonas reinhardtii, Chlorella vulgaris, Scenedesmus obliquus) using nonionic surfactants (Triton X-114, Tergitol TMN 6, Tergitol 15-s-7) was studied in lab- and pilot scale.
Glembin, Philipp +2 more
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Isolation of Gangliosides by Cloud-Point Extraction with a Nonionic Detergent
Analytical Biochemistry, 1997A rapid, simple, and efficient chloroform/methanol-free method of isolating gangliosides is described. The nonionic polyoxyethylene detergent, hexaethyleneglycol mono-n-tetradecyl ether (C14EO6), forms clear micellar solutions in water, but two-phase separation can be achieved by centrifugation in the presence of ammonium sulfate at room temperature. A
A, Schwarz +2 more
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Determination of triptonide by cloud point extraction combined with MEKC
Journal of Separation Science, 2008AbstractA method has been developed for the determination of triptonide in the traditional Chinese herb Tripterygium wilfordii Hook F. by micellar electrokinetic capillary chromatography combined with cloud point extraction. The analyte was extracted at pH 3.0 by micelles of the nonionic surfactant polyoxyethylene 7,5‐octylphenyl ether (Triton X‐114 ...
Yi-Wei, Wu +3 more
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An improved approach for flow-based cloud point extraction
Analytica Chimica Acta, 2014Novel strategies are proposed to circumvent the main drawbacks of flow-based cloud point extraction (CPE). The surfactant-rich phase (SRP) was directly retained into the optical path of the spectrophotometric cell, thus avoiding its dilution previously to the measurement and yielding higher sensitivity.
Rejane M, Frizzarin, Fábio R P, Rocha
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2017
Phase separation of a surfactant-loaded solution happens beyond a certain critical thermodynamic state (known as the cloud point), separating the hydrophobic-rich phase in a nonpolar microenvironment from the aqueous supernatant. The dye molecules are bounded to the surfactant and subsequently separated by changing the environmental factor (temperature
Sourav Mondal +2 more
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Phase separation of a surfactant-loaded solution happens beyond a certain critical thermodynamic state (known as the cloud point), separating the hydrophobic-rich phase in a nonpolar microenvironment from the aqueous supernatant. The dye molecules are bounded to the surfactant and subsequently separated by changing the environmental factor (temperature
Sourav Mondal +2 more
openaire +1 more source