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https://hdl.handle.net/20.500.14094/90004756
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2024-05-05
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90004756 (fulltext)
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90004756
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タイトル
Radionuclide uptake by colloidal and particulate humic acids obtained from 14 soils collected worldwide
著者
Lin, Peng ; Xu, Chen ; Xing, Wei ; Sun, Luni ; Kaplan, Daniel I. ; Fujitake, Nobuhide ; Yeager, Chris M. ; Schwehr, Kathleen A. ; Santschi, Peter H.
著者名
Lin, Peng
著者名
Xu, Chen
著者名
Xing, Wei
著者名
Sun, Luni
著者名
Kaplan, Daniel I.
著者ID
A1193
研究者ID
1000050243332
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=ca5ed552c91130b5520e17560c007669
著者名
Fujitake, Nobuhide
藤嶽, 暢英
フジタケ, ノブヒデ
所属機関名
農学研究科
著者名
Yeager, Chris M.
著者名
Schwehr, Kathleen A.
著者名
Santschi, Peter H.
収録物名
Scientific Reports
巻(号)
8
ページ
4795-4795
出版者
Nature Publishing Group
刊行日
2018-03-19
公開日
2018-04-05
抄録
Uptake of six particle-reactive and/or redox-sensitive radionuclides (210Pb, 234Th, 7Be, 59Fe, 237Np and 233Pa) by 14 humic acids (HAs) was investigated in artificial groundwater under mildly acidic conditions (pH~5.5). In HA-groundwater slurry, Pb, Be, Fe and Pa bound strongly to particulate HA (>0.45 μm), supporting their application as tracers of soil erosion. Th bound strongly to the colloidal HA (3 kDa-0.45 μm) and as such, would not be a good candidate as a tracer for monitoring soil erosion. HAs likely reduced the oxidized neptunyl form (Np(V)O4+) to Np(IV) based on its enhanced particle-reactivity and Np uptake by particulate HAs, partially retarding the movement of anthropogenic 237Np in field polluted environments. Particulate/colloidal carbonyl/O-aryl (likely through hydroquinone/quinone) functionalities in the HA correlated to Np and Pa uptake, but only particulate O-aryl functionalities was responsible for Fe uptake. The carboxylate- and carbonyl/O-aryl-containing organic functionalities in the HA correlated strongly with Th uptake. In contrast, no significant correlations between organic parameters and Pb or Be uptake implied their predominance of uniform surface adsorption onto particles. This study provides novel insight into the binding of six radionuclides with different organic functionalities of three size fractions, as well as its possible impact on their application in the soil-tracing research.
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農学研究科
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© The Author(s) 2018
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
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資源タイプ
journal article
言語
English (英語)
eISSN
2045-2322
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DOI
https://doi.org/10.1038/s41598-018-23270-0
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