Results 21 to 30 of about 599,506 (253)

Identification of Phytochemicals from the Water Extract of Eurycoma longifolia Roots using Solid-Liquid and Liquid-Liquid Extraction Based Fractionation Techniques

Acta Chimica Slovenica, 2021
Phytochemicals in the water extract of Eurycoma longofolia roots were identified using both solid-liquid and liquid-liquid extraction based fractionation techniques.
Lee Suan Chua, Abirame Segaran, Hoi Jin Wong   +2 more
doaj   +1 more source

Mechanism research on technical policy of liquid extraction depressurization development for buried hill reservoirs [PDF]

E3S Web of Conferences, 2021
Most of buried hill reservoirs are in the late stage of water flooding development, especially for this kind of reservoir with large water-oil volume ratio, it is more difficult to develop the residual oil in matrix system.
Guan Huajiao, Shi Xiaoying, Tao Yayuan, Chao Xianqiu, Tan Yumiao   +4 more
doaj   +1 more source

Liquid-liquid extraction

This practical work focuses on the study of liquid-liquid extraction, a fundamental unit operation in chemical engineering. The main objective is to determine the partition coefficient (K) of benzoic acid between two immiscible phases: an aqueous solution and an organic phase consisting of sunflower oil.
Fabio Montagnaro, Marco Balsamo, Francesca Di Lauro   +2 more
  +5 more sources

Otimização de Diferentes Procedimentos de Preparo de Amostras: Aplicação na Extração de Antioxidantes Presentes em Biodiesel

Orbital: The Electronic Journal of Chemistry, 2015
In this work, different procedures were compared for the extraction of synthetic antioxidants such as propyl gallate (PG), tert-Butylhydroquinone (TBHQ), 3-tert-butyl-4-hydroxyanisole (BHA) and 3,5-di-tert-butyl-4 hydroxytoluene (BHT) from biodiesel ...
Adriana Garabini de Freitas Andrade, Ricardo Pini Caramit, Tatiane Alfonso de Araújo, Luiz Henrique Viana, João Batista Gomes de Souza, Magno A. G. Trindade, Valdir Souza Ferreira   +6 more
doaj   +3 more sources

Comparison of the Partition Efficiencies of Multiple Phenolic Compounds Contained in Propolis in Different Modes of Acetonitrile–Water-Based Homogenous Liquid–Liquid Extraction

Molecules, 2019
Homogeneous liquid⁻liquid extraction (HLLE) has attracted considerable interest in the sample preparation of multi-analyte analysis. In this study, HLLEs of multiple phenolic compounds in propolis, a polyphenol-enriched resinous substance collected
Wenbin Chen, Xijuan Tu, Dehui Wu, Zhaosheng Gao, Siyuan Wu, Shaokang Huang   +5 more
doaj   +1 more source

Exploration of Extraction and Separation Techniques for Routine Trace Analysis of Organic Compounds in Water: Dispersive Liquid-Liquid Microextraction vs Liquid-Liquid Extraction

Journal of Chromatography Open, 2022
Dispersive liquid-liquid microextraction (DLLME) was compared to liquid-liquid extraction (LLE) in terms of the methods’ abilities to analyze samples and ultimately to provide information to an analyst.
Trevor A. Johnson, Michael D.S. Armstrong, A. Paulina de la Mata, James J. Harynuk   +3 more
doaj   +1 more source

Using Membrane-Supported Liquid–Liquid Extraction for the Measurement of Extraction Kinetics

CHIMIA, 2011
Membrane-supported liquid–liquid extraction uses artificial membranes for the generation of a phase interface between the two liquid phases involved in extraction.
Wolfgang Riedl, Daniel Mollet, Gerhard Grundler   +2 more
doaj   +1 more source

Determination of Eight Coccidiostats in Eggs by Liquid–Liquid Extraction–Solid-Phase Extraction and Liquid Chromatography–Tandem Mass Spectrometry

Molecules, 2020
A method for the simultaneous determination of robenidine, halofuginone, lasalocid, monensin, nigericin, salinomycin, narasin, and maduramicin residues in eggs by liquid chromatography−tandem mass spectrometry (LC−MS/MS) was developed.
Bo Wang, Jianyu Liu, Xia Zhao, Kaizhou Xie, Zhixiang Diao, Genxi Zhang, Tao Zhang, Guojun Dai   +7 more
doaj   +1 more source

Optimization of liquid-liquid Extraction Column Using Genetic Algorithms [PDF]

Engineering and Technology Journal, 2012
In the present study, liquid-liquid extraction column was optimized using Genetic Algorithms as a non-conventional optimization technique, which scores over conventional techniques.
Ali D. Ali
doaj   +1 more source

Ion-Pair Complex of Trimethoprim with Alizarin Yellow and its Determination and Extraction by LLE and DLLME

Tikrit Journal of Pure Science, 2023
For the analysis of trimethoprim medication in its pure form and pharmaceutical formulations, precise and accurate microextraction techniques with UV-Vis measurement have been developed and confirmed.
Araf I. Jabbar, Mohammed Z. Thani, Ali I. Khaleel   +2 more
doaj   +1 more source