Work

The distribution of radioactive caesium in river water at the Tama River watershed six years after the Fukushima Daiichi Nuclear Power Plant accident

Year: 2026

Type: article

Abstract: Following the Fukushima Dai-ichi Nuclear Power Plant accident, radioactive caesium was detected in the Tama River watershed in the Kanto region of Japan. Radioactivity analysis was conducted on river water samples collected in 2017 to determine the distribution of dissolved and suspended radioactive caesium in the Tama River watershed. The activity concentrations of 137 Cs in the dissolved and suspended phases were below 1.17 mBq L −1 and 3.30 mBq L −1 , respectively. A significant correlation was observed between the activity concentration of 137 Cs in the river water and several water quality parameters. We obtained useful insights into the migration of 137 Cs in river water within a watershed within urban areas.

Source: Journal of Radioanalytical and Nuclear Chemistry

DOI: 10.1007/s10967-026-11084-8

Authors: Satoshi Inose, Masato Akiyama, Kenta Hagiwara, Yuya Koike

Institutions: Meiji University, Kogakuin University

Language: English

Topic: Radioactive contamination and transfer

Subfield: Global and Planetary Change

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Good health and well-being

Open Access status: hybrid

Estimated APC paid: $3,790