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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1107/S0909049512041763
|2 doi
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|a pubmed24n0745.xml
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Alessi, Daniel S
|e verfasserin
|4 aut
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|a Beam-induced oxidation of monomeric U(IV) species
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.06.2013
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|a Date Revised 21.11.2013
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Uranium L(III)-edge X-ray absorption spectroscopy is often used to probe the oxidation state and coordination of uranium in environmental samples, and micrometre-sized beams can be used to spatially map the distribution of uranium relative to other elements. Here a variety of uranium-containing environmental samples are analyzed at both microbeam and larger beam sizes to determine whether reoxidation of U(IV) occurred. Monomeric U(IV), a recently discovered product of U(VI) reduction by microbes and certain iron-bearing minerals at uranium-contaminated field sites, was found to be reoxidized during microbeam (3 µm × 2 µm) analysis of biomass and sediments containing the species but not at larger beam sizes. Thus, care must be taken when using X-ray microprobes to analyze samples containing monomeric U(IV)
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Uranium
|2 NLM
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|a 4OC371KSTK
|2 NLM
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| 700 |
1 |
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|a Uster, Benjamin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Borca, Camelia N
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Grolimund, Daniel
|e verfasserin
|4 aut
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1 |
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|a Bernier-Latmani, Rizlan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 20(2013), Pt 1 vom: 01. Jan., Seite 197-9
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
1 |
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|g volume:20
|g year:2013
|g number:Pt 1
|g day:01
|g month:01
|g pages:197-9
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|u http://dx.doi.org/10.1107/S0909049512041763
|3 Volltext
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