Uranium oxides structural transformation in human body liquids

Abstract

Uranium oxide microparticles ingestion is one of the potential sources of internal radiation doses to the humans at accidental or undesirable releases of radioactive materials. It is important to predict the obtained dose and possible biological effect of these microparticles by studying uranium oxides transformations in case of their ingestion or inhalation. Using a combination of methods, a complex examination of structural changes of uranium oxides in the range from UO2 to U4O9, U3O8 and UO3 as well as before and after exposure of uranium oxides in simulated biological fluids: gastro-intestinal and lung—was carried out. Oxides were thoroughly characterized by Raman and XAFS spectroscopy. It was determined that the duration of expose has more influence on all oxides transformations. The greatest changes occurred in U4O9, that transformed into U4O9-y. UO2.05 and U3O8 structures became more ordered and UO3 did not undergo significant transformation.

Multi-Element Isotopic Analysis of Hot Particles from Chornobyl

“…studied on Cs species in Fukushima [52]. Such analysis is beyond the scope of this study, however consideration of their morphology is a helpful classification tool for comparison with other studies [46,53].…”

Long-term, sustainable solutions to radioactive waste management

“…Investigating nuclear accidents is crucial for improving nuclear waste solutions because it enhances safety, reduces risks, strengthens regulations, drives technological advancements, and encourages international cooperation to address the challenges of nuclear waste management. Poliakova et al 8 studied uranium oxides, which can disperse into the environment in various forms following different accidental scenarios. The team investigated the behavior of uranium oxide particles, which could be easily ingested by humans and animals in the vicinity of a contaminated area.…”