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| Title | Effect of radioactive cesium-rich microparticles on radioactive cesium concentration and distribution coefficient in rivers flowing through the watersheds with different contaminated condition in Fukushima | |
|---|---|---|
| Author 1 | Takahiro Tatsuno |  |
| Author 2 | Hiromichi Waki | |
| Author 3 | Minato Kakuma | |
| Author 4 | Naoto Nihei | |
| Authors 5- | Tsugiko Takase | |
| Subject | Lakes & Rivers | |
| Subject_sub1 | ||
| Subject_sub2 | ||
| Abstract | Radioactive cesium-rich microparticles (CsMPs) derived from the Fukushima Daiichi Nnuclear Power Plant accident were detected from soils and river water around Fukushima Prefecture, Japan. Because CsMPs are insoluble and rich in radioactive cesium (RCs), they may cause the overestimation of solid-water distribution coefficient (Kd) for RCs in the water. Previous studies showed the proportion of RCs derived from CsMPs on RCs concentration in soils collected from areas with different contaminated levels. Because the proportion of RCs concentration derived CsMPs to the RCs concentration of soils in the less contaminated areas is higher than that in the highly contaminated areas, the effect of CsMPs on particulate RCs concentration in river water may be larger in the less contaminated areas. However, the difference in the effects of CsMPs on the particulate RCs concentration and Kd in river water flowing through watersheds with different contaminated levels has not been clarified. In this study, we investigated the effect of CsMPs on the particulate RCs concentration and Kd in two rivers, Takase River and Kami-Oguni River, flowing through the watersheds with different RCs contaminated levels in Fukushima Prefecture. CsMPs might enter rivers due to soil erosion because they were detected only in some samples collected from both rivers during flood events. CsMPs accounted for more than half of particulate RCs concentration in some water samples collected in the flood condition. In particular, the proportion of CsMPs in particulate RCs for the Kami-Oguni River was greater than that for the Takase River. However, when evaluating for the entire water sampling in the flood condition, a proportion of RCs concentration derived from CsMPs in the average RCs concentrations per unit mass of SS in both river waters collected in the flood condition was not large. CsMPs might temporarily increase the particulate RCs concentration and Kd in the flood event, but CsMPs did not significantly affect them when evaluated throughout the event. The dataset used in this study includes measurements of ^137Cs concentrations in both suspended and dissolved forms. https://doi.org/10.1016/j.jenvman.2022.116983 | |
| Temporal coverage | 2021-2022 | |
| Spatial coverage | 37.66666666 N ~ 37.83333333 N, 140.5 E ~ 140.625 E | |
| File format | Delimited | |
| Language | English | |
| Discovery metadata record | ||
| Publisher | Center for Research in Radiation, Isotopes, and Earth System Sciences, University of Tsukuba | |
| Publication year | 2025 | |
| Publication date | 23rd of November | |
| Digital Object Identifier (DOI) | 10.34355/IER.Fukushima.U.00322 Data Download (18KB) | |
| Short DOI | ||
| Citation text | Tatsuno, T., Waki, H., Kakuma, M., Nihei, N., & Takase, T. (2025). Effect of radioactive cesium-rich microparticles on radioactive cesium concentration and distribution coefficient in rivers flowing through the watersheds with different contaminated condition in Fukushima [Dataset]. Center for Research in Radiation, Isotopes, and Earth System Sciences, University of Tsukuba. https://doi.org/10.34355/IER.Fukushima.U.00322
Tatsuno, T., Waki, H., Kakuma, M., Nihei, N., Takase, T., Wada, T., Yoshimura, K., Nakanishi, T., & Ohte, N. (2023). Effect of radioactive cesium-rich microparticles on radioactive cesium concentration and distribution coefficient in rivers flowing through the watersheds with different contaminated condition in Fukushima. Journal of Environmental Management, 329, 116983. https://doi.org/10.1016/j.jenvman.2022.116983 | |
| Serial at center | 00322 | |
| Serial at each Univ./Institute | FUKU0004 | |
| Key word 1 | Radioactive cesium | |
| Key word 2 | Soil erosion | |
| Key word 3 | Water sampling | |
| Key word 4 | Fukushima | |
| Key word 5 | ||
| Remarks | ||