Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Autori: A. Cecal, M. Raileanu
Editorial: Zeitschrift für anorganische und allgemeine Chemie, 634, p.232-234, 2008.
The determination of the two species of uranium(VI and IV) present in 6 uranium ores was studied in relation to the chemical and mineralogical composition, humidity, and pH of the samples taken over from the mine. X-ray diffraction studies, performed on the uranium ores in powder form allowed to establish their mineralogical composition. Thechemical analysis pointed out the presence, besides the two uranium species, of some microelements able to influence the U(VI)/U(IV) ratio in minerals and to leach out U(VI) as uranyl ions from the corresponding minerals.
Cuvinte cheie: Uranium;Minerals;Leaching;X-ray patterns