Tag Archives: Cesium

With Fukushima’s fifth anniversary approaching, we can probably start to relax about radioactive seafood

Fisherman from the “Kiyomaru” fishing boat pull in their net as they sail off the Iwaki town south of crippled Daiichi nuclear power plant, Fukushima prefecture September 20, 2013. Only a small part of the boat’s catch will be used to test for radioactive contamination in the waters near the Fukushima Daiichi nuclear facility, while the rest will be thrown back into the ocean. (REUTERS/Damir Sagolj)

By Chelsea Harvey
The Washington Post
Published 29 Feb 2016

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.

Continue reading With Fukushima’s fifth anniversary approaching, we can probably start to relax about radioactive seafood

Screening truffles for radioactivity 30 years from Chernobyl

IMAGE
Miro is a trained truffle dog that belongs to Simon Egli, a co-author of the Biogeosciences paper based at Swiss Federal Research Institute WSL. He’s pictured here with a Burgundy truffle he found in Switzerland. Credit: Simon Egli, WSL

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).

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No radiation from Japan’s Fukushima disaster found in BC fish

No radiation from Japan's Fukushima disaster found in B.C. fish
John Nightingale, president of the Vancouver Aquarium, said at a 2014 news conference by the Arctic char tank at Vancouver Aquarium that radiation levels are barely above background levels since the 2011 meltdown of nuclear reactors at Fukushima caused by the earthquake and tsunami.

By Bethany Lindsay
Vancouver Sun
Published 23 Feb 2016

Nearly five years after a massive earthquake resulted in the Fukushima nuclear disaster in Japan, researchers in B.C. have found no detectable levels of contamination in fish along the West Coast.

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External ionizing radiation doses of high school students in Japan, France, Poland and Belarus

By Jay T. Cullen

Third-year science students H. Onodera and R. Suzuki, both 18, and second-year students M. Saito, Y. Fujiwara, both 17, and S. Anzai, 16 and their supervising teacher T. Hara, 57, took part in compiling the study.  They used citizen science deployed dosimeters to compare external radiation dose experience by students in different countries.
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.

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Residents Living South of the Fukushima Dai-ichi Have Minimal Internal Radiation Exposure

Areas to the south of the Fukushima Daiichi nuclear power plant. WBC measurement were performed at the Jyoban Hospital in central Iwaki, which is located about 50 km south of the Fukushima Daiichi nuclear power plant. Study subjects were mainly hospital visitors from Iwaki and its suburbs.

By Jay T. Cullen

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