Results 301 to 310 of about 909,750 (353)
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Chemistry of Extraction by Sulphoxides
Russian Chemical Reviews, 1976The present state of the chemistry of extraction equilibria involving sulphoxides of diverse structure — aliphatic, cyclic, and also mixtures of petroleum origin — is discussed, and results are given for the extraction of inorganic and organic acids and metal salts from aqueous solution.
Yu E Nikitin +2 more
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Computational Chemistry in Solvent Extraction
ChemInform, 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Kazuya Uezu, Kazuharu Yoshizuka
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Scandium – Leaching and Extraction Chemistry
2021Scandium (Sc) is one of the key elements in the green economy due to its use in fuel cells and as alloying metal for aluminium, but the scandium market is not working in the sense that very little is offered at a high price making it impossible to gain use of the metal.
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The Chemistry of Pollen-Extracts
The Journal of Immunology, 1943Abstract Cooke and Stull (1, 2) employed phosphotungstic acid in hydrochloric acid for the standardization of pollen-extracts, and established a protein-nitrogen unit which was taken as equal to 0.00001 mg of nitrogen per ml of extract.
Ethan Allan Brown, Norbert Benotti
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Extraction and chemistry of annatto
Food Chemistry, 1980Abstract Annatto extracts contained in the pericarp of the fruit Bixa orellana are extracted by several methods. Commercial preparations consist of solutions or suspensions of the pigment in vegetable oil or as a water-soluble form in dilute alkaline solution.
H.D. Preston, M.D. Rickard
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Progress in actinide extraction chemistry
Journal of Radioanalytical and Nuclear Chemistry Articles, 1990During the last decade new extractants for actinides have been actively developed mainly to improve radiochemical processes and for analytical chemistry. At the same time our knowledge about extraction equilibrium chemistry, composition and structure of complexes became more profound.
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Supramolecular Chemistry in Solvent Extraction
2013Solvent extraction provides the basis for important separation and concentration processes that are widely used in hydrometallurgy, waste treatment, e ffluent purification, and material preparation 1– 3 . In a typical extraction process, the complexing agent, the extractant, plays a key role and is responsible for the phase transfer of one or more ...
Gloe, Karsten +4 more
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Memrane extraction in analytical chemistry
Journal of Separation Science, 2001In this paper the principles and application of porous and non-porous membrane extraction techniques for sample preparation (pretreatment) in analytical chemistry are reviewed, with emphasis on aqueous samples of biological, environmental, or food origin.
Jan Åke Jönsson, Lennart Mathiasson
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Extraction chemistry of fermentation product carboxylic acids
Biotechnology and Bioengineering, 1986AbstractWithin the framework of a program aiming to improve the existing extractive recovery technology of fermentation products, the state of the art is critically reviewed. The acids under consideration are propionic, lactic, pyruvic, succinic, fumaric, maleic, malic, itaconic, tartaric, citric, and isocitric, all obtained by the aerobic fermentation
A S, Kertes, C J, King
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Extraction and chemistry of cochineal
Food Chemistry, 1980Abstract The study of ‘cochineal’ for use in food involves a wide range of unexpected disciplines. The importance of the historical, geographical and entomological backgrounds is emphasised. The chemistry of carminic acid and related hydroxyanthraquinones is shown to have been confused by the early work of Liebermann & Voswinckel (1897), but evidence
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