March 11 will mark the five-year anniversary of the Fukushima Daiichi disaster, a series of nuclear meltdowns, triggered by a devastating earthquake-induced tsunami, that released massive amounts of radioactive material and resulted in the largest nuclear disaster since Chernobyl. Since then, the plant’s damaged drainage system has continued to leak radioactive water into the environment, and one of the biggest enduring public concerns has been the safety of fish caught in the area’s surrounding waters.
by European Geosciences Union EurekAlert
Published 25 Feb 2016
Some forest mushrooms, such as wild porcini, can accumulate dangerous levels of radioactivity from the soils they grow in. But until now it was unclear if the same was true for truffles, fungi that range among the most expensive foods in the world. Swiss and German researchers have analysed Burgundy truffles collected in central Europe and found they contain only negligible amounts of radioactive caesium, being safe for consumption. The results are published today (25 February) in Biogeosciences, an open access journal of the European Geosciences Union (EGU).
The purpose of this post to report on a peer-reviewed, open access study published in the Journal of Radiological Protection where high-school aged citizen scientists measured and compared the external ionizing radiation doses experienced by students in Japan, Belarus, France, and Poland. Adachi and colleagues equipped 216 high-school students in Japan (inside and outside Fukushima Prefecture), Belarus, France and Poland with an electronic dosimeter to estimate and compare annual external ionizing radiation doses in 2014. The distribution of doses experienced in each region overlapped with each other indicating that personal external ionizing radiation exposure in Fukushima Prefecture and Belarus are within the range of annual doses from terrestrial background radiation in other locations.
The purpose of this post is to relate findings published (open access) in the peer-reviewed journal PLOSOne by Akiyama and colleagues who investigated internal radiocesium contamination in residents living south of the Fukushima Dai-ichi Nuclear Power Plant. This post is the most recent in a series dedicated to sharing the results of scientific research into the impact of the nuclear power plant disaster on ecosystem and public health. The Akiyama study builds on recent work by this group using a whole body counter (WBC) to look for internal contamination of residents living near (north and west) the reactors at the time of the meltdowns. Measurements were made on 9,206 affected individuals, including 6,446 school children (4-15 years) living south of the reactors or evacuated to Iwaki city following the bulk of radionuclide releases. Measurements began one year after the accident and continued for two years. The authors conclude that, despite lack of data for the first year following the disaster, internal doses experienced by residents to the south of the FNPP were minimal. This suggests that efforts to mitigate foodborne exposure have been largely successful and that nearly all the annual effective doses for this segment of the population more than one year after the disaster are likely due to external exposure. Continue reading Residents Living South of the Fukushima Dai-ichi Have Minimal Internal Radiation Exposure→