Coacervate Extraction
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Decanoic Acid Reverse Micelle-Based Coacervates for Microextraction of Silver in Natural Waters Prior to Flame Atomic Absorption Spectrometry Determination
In the present work, a novel, simple, and efficient method for the determination of silver in natural water samples was developed. The method is based on the extraction of silver with coacervate made up of decanoic acid reverse micelles and the subsequent determination by flame atomic absorption spectrometry (FAAS). Dithizone was used as a chelating agent. T
J. Braz. Chem. Soc.. Publicado em: 2016-11
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2. Determination of Polycyclic Aromatic Hydrocarbons in Groundwater Samples by Gas Chromatography-Mass Spectrometry After Pre-Concentration Using Cloud‑Point Extraction with Surfactant Derivatization
A cloud-point extraction (CPE) method using the surfactant (30)p-tert-octylphenol polyoxyethylene (OPEO30) was proposed as the preceding step for the determination of polycyclic aromatic hydrocarbons (PAHs) by gas chromatography-mass spectrometry (GC-MS). Given the need for surfactant derivatization before the chromatographic analysis, the reaction condition
J. Braz. Chem. Soc.. Publicado em: 2015-05
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3. APPROCHE THERMODYNAMIQUE ET CINETIQUE DE L EXTRACTION A DEUX PHASES AQUEUSES À L AIDE DE TENSIOACTIFS NON IONIQUES / A THERMODYNAMIC AND KINETIC APPROACH OF TWO-AQUEOUS PHASE EXTRACTION WITH NON-IONIC SURFACTANTS
The present work forms a part of the study of a two-aqueous phase extraction process using the occurrence of a cloud point (Tc) in the phase diagrams of water/polyethoxylated nonionic surfactant systems. Its main goals were: modelling and predicting the corresponding cloud point curves, investigating the mechanism controlling the mass transfer between phases
Publicado em: 2004