Matches in SemOpenAlex for { <https://semopenalex.org/work/W4206949449> ?p ?o ?g. }
- W4206949449 endingPage "1762" @default.
- W4206949449 startingPage "1753" @default.
- W4206949449 abstract "Uranium isotopic signatures can be harnessed to monitor the reductive remediation of subsurface contamination or to reconstruct paleo-redox environments. However, the mechanistic underpinnings of the isotope fractionation associated with U reduction remain poorly understood. Here, we present a coprecipitation study, in which hexavalent U (U(VI)) was reduced during the synthesis of magnetite and pentavalent U (U(V)) was the dominant species. The measured δ238U values for unreduced U(VI) (∼-1.0‰), incorporated U (96 ± 2% U(V), ∼-0.1‰), and extracted surface U (mostly U(IV), ∼0.3‰) suggested the preferential accumulation of the heavy isotope in reduced species. Upon exposure of the U-magnetite coprecipitate to air, U(V) was partially reoxidized to U(VI) with no significant change in the δ238U value. In contrast, anoxic amendment of a heavy isotope-doped U(VI) solution resulted in an increase in the δ238U of the incorporated U species over time, suggesting an exchange between incorporated and surface/aqueous U. Overall, the results support the presence of persistent U(V) with a light isotope signature and suggest that the mineral dynamics of iron oxides may allow overprinting of the isotopic signature of incorporated U species. This work furthers the understanding of the isotope fractionation of U associated with iron oxides in both modern and paleo-environments." @default.
- W4206949449 created "2022-01-26" @default.
- W4206949449 creator A5019091225 @default.
- W4206949449 creator A5045044926 @default.
- W4206949449 creator A5065088339 @default.
- W4206949449 creator A5066727532 @default.
- W4206949449 creator A5073134683 @default.
- W4206949449 creator A5083394434 @default.
- W4206949449 creator A5091866061 @default.
- W4206949449 date "2022-01-21" @default.
- W4206949449 modified "2023-10-02" @default.
- W4206949449 title "Persistence of the Isotopic Signature of Pentavalent Uranium in Magnetite" @default.
- W4206949449 cites W1970649246 @default.
- W4206949449 cites W1976009908 @default.
- W4206949449 cites W1977017774 @default.
- W4206949449 cites W1980523565 @default.
- W4206949449 cites W1982996670 @default.
- W4206949449 cites W1987792566 @default.
- W4206949449 cites W1991560733 @default.
- W4206949449 cites W1993068557 @default.
- W4206949449 cites W1993415811 @default.
- W4206949449 cites W1997221570 @default.
- W4206949449 cites W1997917020 @default.
- W4206949449 cites W1998290559 @default.
- W4206949449 cites W1998734655 @default.
- W4206949449 cites W1999117087 @default.
- W4206949449 cites W2002037737 @default.
- W4206949449 cites W2006788845 @default.
- W4206949449 cites W2015668116 @default.
- W4206949449 cites W2025762664 @default.
- W4206949449 cites W2025805175 @default.
- W4206949449 cites W2044633001 @default.
- W4206949449 cites W2045036940 @default.
- W4206949449 cites W2048087710 @default.
- W4206949449 cites W2049384928 @default.
- W4206949449 cites W2049829812 @default.
- W4206949449 cites W2050775407 @default.
- W4206949449 cites W2054842898 @default.
- W4206949449 cites W2056255377 @default.
- W4206949449 cites W2058890089 @default.
- W4206949449 cites W2063534111 @default.
- W4206949449 cites W2065185701 @default.
- W4206949449 cites W2069488139 @default.
- W4206949449 cites W2074753263 @default.
- W4206949449 cites W2075853710 @default.
- W4206949449 cites W2082385982 @default.
- W4206949449 cites W2088111944 @default.
- W4206949449 cites W2100678868 @default.
- W4206949449 cites W2107474811 @default.
- W4206949449 cites W2116568181 @default.
- W4206949449 cites W2131147946 @default.
- W4206949449 cites W2143178282 @default.
- W4206949449 cites W2151544845 @default.
- W4206949449 cites W2152413365 @default.
- W4206949449 cites W2312547474 @default.
- W4206949449 cites W2313040401 @default.
- W4206949449 cites W2316387851 @default.
- W4206949449 cites W2406072295 @default.
- W4206949449 cites W2415592772 @default.
- W4206949449 cites W2544829264 @default.
- W4206949449 cites W2575395989 @default.
- W4206949449 cites W2577715832 @default.
- W4206949449 cites W2753700764 @default.
- W4206949449 cites W2768434060 @default.
- W4206949449 cites W2884769062 @default.
- W4206949449 cites W2994357563 @default.
- W4206949449 cites W3026977701 @default.
- W4206949449 cites W3048131176 @default.
- W4206949449 cites W3164234024 @default.
- W4206949449 cites W4200243964 @default.
- W4206949449 doi "https://doi.org/10.1021/acs.est.1c06865" @default.
- W4206949449 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35061941" @default.
- W4206949449 hasPublicationYear "2022" @default.
- W4206949449 type Work @default.
- W4206949449 citedByCount "6" @default.
- W4206949449 countsByYear W42069494492022 @default.
- W4206949449 countsByYear W42069494492023 @default.
- W4206949449 crossrefType "journal-article" @default.
- W4206949449 hasAuthorship W4206949449A5019091225 @default.
- W4206949449 hasAuthorship W4206949449A5045044926 @default.
- W4206949449 hasAuthorship W4206949449A5065088339 @default.
- W4206949449 hasAuthorship W4206949449A5066727532 @default.
- W4206949449 hasAuthorship W4206949449A5073134683 @default.
- W4206949449 hasAuthorship W4206949449A5083394434 @default.
- W4206949449 hasAuthorship W4206949449A5091866061 @default.
- W4206949449 hasBestOaLocation W42069494491 @default.
- W4206949449 hasConcept C107872376 @default.
- W4206949449 hasConcept C112570922 @default.
- W4206949449 hasConcept C121332964 @default.
- W4206949449 hasConcept C127313418 @default.
- W4206949449 hasConcept C146458902 @default.
- W4206949449 hasConcept C150394285 @default.
- W4206949449 hasConcept C151730666 @default.
- W4206949449 hasConcept C164304813 @default.
- W4206949449 hasConcept C177322064 @default.
- W4206949449 hasConcept C178790620 @default.
- W4206949449 hasConcept C179104552 @default.
- W4206949449 hasConcept C185592680 @default.