{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Bone SE"],"funding":["U.S. Department of Energy","CIHR"],"pagination":["711-716"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC5278482"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["114(4)"],"pubmed_abstract":["Uranium is an important carbon-free fuel source and environmental contaminant that accumulates in the tetravalent state, U(IV), in anoxic sediments, such as ore deposits, marine basins, and contaminated aquifers. However, little is known about the speciation of U(IV) in low-temperature geochemical environments, inhibiting the development of a conceptual model of U behavior. Until recently, U(IV) was assumed to exist predominantly as the sparingly soluble mineral uraninite (UO<sub>2+x</sub>) in anoxic sediments; however, studies now show that this is not often the case. Yet a model of U(IV) speciation in the absence of mineral formation under field-relevant conditions has not yet been developed. Uranium(IV) speciation controls its reactivity, particularly its susceptibility to oxidative mob"],"journal":["Proceedings of the National Academy of Sciences of the United States of America"],"pubmed_title":["Uranium(IV) adsorption by natural organic matter in anoxic sediments."],"pmcid":["PMC5278482"],"funding_grant_id":["DE-AC02-76SF00515"],"pubmed_authors":["Dynes JJ","Bargar JR","Cliff J","Bone SE"],"additional_accession":[]},"is_claimable":false,"name":"Uranium(IV) adsorption by natural organic matter in anoxic sediments.","description":"Uranium is an important carbon-free fuel source and environmental contaminant that accumulates in the tetravalent state, U(IV), in anoxic sediments, such as ore deposits, marine basins, and contaminated aquifers. However, little is known about the speciation of U(IV) in low-temperature geochemical environments, inhibiting the development of a conceptual model of U behavior. Until recently, U(IV) was assumed to exist predominantly as the sparingly soluble mineral uraninite (UO<sub>2+x</sub>) in anoxic sediments; however, studies now show that this is not often the case. Yet a model of U(IV) speciation in the absence of mineral formation under field-relevant conditions has not yet been developed. Uranium(IV) speciation controls its reactivity, particularly its susceptibility to oxidative mob","dates":{"release":"2017-01-01T00:00:00Z","publication":"2017 Jan","modification":"2025-04-04T08:44:39.441Z","creation":"2019-03-27T02:35:12Z"},"accession":"S-EPMC5278482","cross_references":{"pubmed":["28069941"],"doi":["10.1073/pnas.1611918114"]}}