¹³⁷Cs Concentrations in Foliose Lichens Within Tsukuba-city As a Reflection of Radioactive Fallout from the Fukushima Dai-ichi Nuclear Power Plant Accident

Overview

Journal J Environ Radioact

Specialty Environmental Health

Date 2014 Dec 19

PMID 25521042

Citations 5

Authors

Yoshihito Ohmura

Kimiyo Matsukura

Jun-ichi P Abe

Kentaro Hosaka

Masanori Tamaoki

Terumi Dohi

Makoto Kakishima

Mark R D Seaward

Affiliations

Soon will be listed here.

Abstract

(137)Cs concentrations in ten species of foliose lichens collected within Tsukuba-city in August 2013 ranged from 1.7 to 35 kBq/kg. The relationships between (137)Cs in two dominant species, Dirinaria applanata and Physcia orientalis, and the air dose rate (μSv/h) at the sampling sites were investigated. (137)Cs in P. orientalis measured about 1 year after the Fukushima nuclear accident was correlated (r(2) = 0.80) more closely with the air dose rate than those measured after about 2 years (r(2) = 0.65), possibly demonstrating its continued value as a biomonitor to reflect ambient fall-out levels. In contrast, those of Dirinaria applanata were not correlated with the air dose rate in either year.

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