Fractionation of uranium forms as affected by spiked soil treatment and soil type.

摘要: To evaluate the effect of different soil factors on uranium distribution fraction in soil, a U-fractionation experiment was conducted. Different Uranium forms were compared two types (clayey from Mostourd area and sandy collected El-Gabal Al-Asfar area). Also, variation due to treatment (spiking) studied. In case Mostorud clayey initial Uraniumfractions 45.63 % as residual form, 20.69 organically bound 16.36 Manganese iron oxides bound, 9.76% Carbonate 7.41 exchangeable fractions 0.15% water soluble fractions. These varied significantly when spiked with 200 mg / Kg 46.88 %, 23.19 9.97 16.07 3.79% 0.10% for residual, organically, oxide, carbonate, respectively. result showed significant reduction Uranium-ex - increase Uranium-carbonate form application. untreated main Uranium-fractions 57.42% (relatively higher – soil) 16.10 13.78% 7.22 5.23 0.25 The application Uranium/Kg resulted changes Uranium-Fractions follows : 59.26 , 11.27 19.59 6.84 2.90 0.14 organic –iron It could be concluded that solubility depends upon soil’s physicochemical, mineralogical micromorphological properties; nature association; mineralogical, morphological, compositional characteristics uranium-bearing phases.