Results 111 to 120 of about 20,901 (161)
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Quaternized agricultural by-products as anion exchange resins
Journal of Environmental Management, 2006The objectives of this study were the chemical modification of readily available, low-cost agricultural by-products to anion exchange resins and the selection of the best modified by-product for further use in anion removal. Resins were prepared through the quaternization of a series of 12 agricultural by-products with N-(3-chloro-2-hydroxypropyl ...
Lynda H, Wartelle, Wayne E, Marshall
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Chromatography of aromatic compounds on anion-exchange resins
Talanta, 1975Complex mixtures of aromatic compounds can be rapidly separated on anion-exchangers in the acetate form with acetic acid as eluent and determined automatically by recording the absorbance in the ultraviolet. Carboxylates are separated by ion-exchange.
L M, Jahangk, L, Olsson, O, Samuelson
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Efficiency of iodide trapping by anion exchange resins
Clinica Chimica Acta, 1966Abstract “Amberlite-IRA-400” and “De-Acidite FF” resins can effectively trap and retain iodide in vitro . Small concentrations of resin efficiently bind iodide present in gastric juice, but resin may later release some of this bound iodide during passage through the intestinal tract. A four-hourly 5.0 g oral dose of resin does not ensure the binding
P J, Scott, C T, Jones, J P, Simcock
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Automated chromatography of monosaccharides on anion exchange resins
Journal of Chromatography A, 1967Abstract An automated method for the separation of various monosaccharides by partition chromatography on strongly basic anion exchangers with a dextran matrix is described. Elution is carried out with water—ethanol mixtures. In some systems anion exchangers of this type give better separations than styrene—divinylbenzene resins.
P, Jonsson, O, Samuelson
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Underquaternized Anion Exchange Resins as Covalent Scavengers
Organic Letters, 2000The use of partially quaternized, chloromethylated polystyrene as a covalent scavenger of cholate ion in aqueous media has been demonstrated. The ability of such polymers to scavenge organic anions by covalent as well as by ionic means has important implications in the areas of medicinal and environmental chemistry, which are briefly discussed.
, Regen +13 more
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Chelate-forming resins prepared by modification of anion-exchange resins
Talanta, 1980The properties of some chelate-forming resins prepared from common anion-exchange resins by treatment with reagents bearing chelate-forming and ion-exchange groups have been studied. A resin prepared from the sulphonic acid derivative of dithizone (DzS) was found to be superior to other chelate-forming resins.
M, Chikuma +4 more
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Desorption of soil phosphate by anion‐exchange resin
Communications in Soil Science and Plant Analysis, 1974Kinetics of phosphate desorption from twenty soils by anion-exchange resin were not satisfactorily explained by either film diffusion (or ion exchange mechanism) mechanism or particle diffusion mechanism. But the phosphate desorption process was adequately explained by a two-constant rate equation.
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The Anion Exchange Equilibria in an Anion Exchange Resin
Journal of the American Chemical Society, 1947R, KUNIN, R J, MYERS
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Recovery of Iodide from Anion Exchange Resins
Nature, 1964ANION exchange resins have been used to separate organic and inorganic iodine compounds from thyroid extracts and from serum by various workers1–4. Organic iodine compounds are relatively easily eluted from resins of this type, but it has proved difficult to recover the iodide.
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