Assessment of suspended sediment and 137Cs sources during the flood event in the Fukushima river using 13C and 14C

被引：0

作者：

Nakanishi, Takahiro ^{[1
,2
]}

Tsuruta, Tadahiko ^{[2
,3
]}

Funaki, Hironori ^{[2
]}

机构：

[1] Japan Atom Energy Agcy, Nucl Sci & Engn Ctr, 2-4 Shirakata,Tokai Mura, Naka, Ibaraki 3191195, Japan

[2] Japan Atom Energy Agcy, Collaborat Labs Adv Decommissioning Sci, 45-169 Kaihama Sukakeba,Haramachi Ku, Minamisoma, Fukushima 9750036, Japan

[3] Japan Atom Energy Agcy, Tono Geosci Ctr, 959-31 Jyorinji,Izumi Cho, Toki, Gifu 5095102, Japan

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2025年

关键词：

Radiocesium; Radiocarbon; Suspended sediment; River discharge; Fukushima nuclear accident; CONTAMINATED PARTICULATE MATTER; NUCLEAR-POWER-PLANT; ACCIDENT; RADIOCESIUM; FALLOUT; RADIONUCLIDES; DEPOSITION; DISPERSION; PB-210; SOILS;

D O I：

10.1007/s10967-025-10253-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, the radiocarbon isotope ratio, Delta 14C, was used to identify the sources of suspended sediment and 137Cs discharged into rivers after the Fukushima nuclear accident. Suspended sediments were collected during the flood event and under normal water conditions to determine 137Cs concentrations, Delta 14C, and stable carbon isotope ratios. The results indicated that the contribution of forest surface soil runoff increased during the flood peak. Furthermore, the distribution of 137Cs deposition in the watershed was reflected in temporal changes in suspended 137Cs concentration during the flood event. This approach provides a comprehensive understanding of both 137Cs and carbon dynamics.

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页数：7

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