Initial data on suspended 134Cs and 137Cs concentrations in the rivers within the 80km radius from Fukushima Daiichi Nuclear Power Plant

This is a data set of suspended 134Cs and 137Cs concentration in in rivers within the 80km radius from Fukushima Daiichi Nuclear Power Plant, measured by Fukushima Prefectural Center for Environmental Creation. Suspended solids (SS) samplers were installed at 29 river monitoring sites, and SS samples were collected every few days to months (35 days on average). After the samples were dried at 105-110℃ for 24 hours, the concentrations of 134Cs and 137Cs were measured with a germanium semiconductor detector (EGC25-195-R, Canberra-Eurisys, USA.). All data are decay corrected on the sample collection date. All data are decay corrected on the sample collection date. The median diameter (D50) and specific surface area (SSA) of each sample were measured by using a laser scattering and diffraction particle size analyzer (SALD-3100, Shimazu, Japan). Detailed processing methods are published in Taniguchi et al. (2019). ---Taniguchi, K., Onda, Y., Smith, H. G., Blake, W. H., Yoshimura, K., Yamashiki, Y., Kuramoto, T., Saito, K., (2019). Transport and redistribution of radiocaesium in Fukushima fallout through rivers. Environ. Sci. Technol. 53, 12339–12347. doi:10.1021/acs.est.9b02890