Вид документа : Статья из журнала Шифр издания : 54/C 70 Автор(ы) : Polyakov E. V., Emel'yanova N. N., Surikov V. T., Ilves G. N. Заглавие : Colloidal Chemical Extraction of Calcium Sulfate and Sorption of Microcomponents of Fresh Water on Calcium Sulfate Место публикации : Radiochemistry. - 2003. - Vol. 45, № 1. - С. 47-50: il. Примечания : Bibliogr. : p. 50 (18 ref.) ISSN: 1066-3622 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): сульфат кальция--сорбция--коллоидно-химическая экстракция Аннотация: Experimental data on colloidal chemical extraction of calcium sulfate formed in supersaturated solutions in fresh water are discussed. When the product of activities of calcium and sulfate ions is artificially exceeded, a nonequilibrium phase with the solubility close to that of CaSO4 is formed. This phase is extracted into a paraffin melt. Colloidal-chemical extraction of calcium sulfate with paraffin melt and sorption of microcomponents (single-, double-, and triple-charged cations) on calcium sulfate precipitates were studied. The precipitate has high affinity for cesium traces (Kd ~10(3) mg g1) in supersaturated solutions. Some cation species are not sorbed on the precipitate Доп.точки доступа: Polyakov, E. V.; Поляков Евгений Валентинович; Emel'yanova, N. N.; Surikov, V. T.; Ilves, G. N.; Ильвес Галина Николаевна