Yomiuri: Cesium-134 detected in plankton 600km from Fukushima just 3 months after meltdowns — Scientists say necessary to look at bioaccumulation

Published: March 18th, 2012 at 7:35 am ET
Email Article Email Article

Title: Cesium found in plankton 600 km away
Source: The Yomiuri Shimbun
Date: Mar. 18, 2012

Radioactive cesium believed to have been released during the crisis at the Fukushima No. 1 nuclear power plant has been found in plankton about 600 kilometers east of the facility, according to a Japan-U.S. joint research team. [...]

The findings will be reported to a conference of the Oceanographic Society of Japan set for Tuesday.

The research team collected animal plankton at 17 locations between 30 kilometers and 600 kilometers east of the plant in June last year, about three months after the March 11 earthquake [...]

Radioactivity Measurements

  • Cesium-137 was detected in all of the collected plankton
  • dry state was found to contain 0.3 to 56.4 becquerels per kilogram
  • before the crisis showed that plankton contained between 0.1 and 0.4 becquerels of cesium-137 per kilogram
  • In the latest survey, the team also found cesium-134–which has a two-year half-life–in plankton at the same levels as cesium-137

Bio-accumulation in the Food Chain

Follow-up studies will be necessary because the radioactive cesium is likely to have accumulated in fish that eat plankton, the team said.

Read the report here

Published: March 18th, 2012 at 7:35 am ET
Email Article Email Article

Related Posts

  1. Yomiuri: Meltdowns were advancing while being kept hidden from public for months — Gov’t “very cautious” about saying meltdown December 15, 2011
  2. Scientists: Radioactive cesium at 10 times above normal levels detected 800 km away from Fukushima September 14, 2012
  3. Cesium in fish off Chiba coast exceeds radiation limit for first time — 200 kilometers from Fukushima plant — Due east of Tokyo February 18, 2013
  4. U.S. scientists find Fukushima cesium in turtles, whales, fish March 19, 2013
  5. 1,800+ bq/kg radioactive cesium detected in tea 160 km from Fukushima plant July 9, 2011

9 comments to Yomiuri: Cesium-134 detected in plankton 600km from Fukushima just 3 months after meltdowns — Scientists say necessary to look at bioaccumulation

  • arclight arclight

    the cesium 134 would have decreased by half, more or less in 1 year?

    heres a 2 part video of chris busby discussing sea to land transfer of isotopes.. hes talking about hinkley here but could equally be talking about the east coast of japan! there are some comments i made to the nuclear and toxic waste dumps 200 km off the coast of japan and a few links here at enenews to the info on that too!

    Uploaded by MsMilkytheclown on 17 Mar 2012

    Uploaded by drdrwoland on Mar 17, 2012

    A short presentation about enriched Uranium contamination at the Hinkley Point nuclear power station complex on the Somerset coast. This is an update on the arguments about the presence of higher than expected levels of Uranium on the site which began with a report by Green Audit at the end of 2010. The site is being developed by French company EdF energy for a new nuclear reactor. Dr Busby visited the site in January 2011with Rosa Cato and measured higher gamma radiation dose rates than were reported to the Environment Agency in the site characterisation documents. Gamma dose rates were above 150nGy/h compared with measurements of 90nGy/h reported in the scientific literature at the perimeter fence in 1993 and less than 60nGy/h reported by EdF in the documents examined by the Environment Agency. ………..In addition, a soil sample taken by Stop Hinkley from the site has been analysed using ICPMS in Germany and high resolution gamma spectrometry and both methods independently confirm the presence of slightly enriched Uranium. Overall Uranium concentrations are twice to four times greater than would be expected for the area on the basis of published Uranium maps…"


    Report comment

  • Anthony Anthony

    Their bioaccumulation studies are necessary but won't read as *normal* as long as the ongoing emissions (air and sea) continue. Thats not even factoring in the groundwater and multiple loose coriums adding inputs into the equation.

    I mean there's bio accumulation and then there is the Fukushima Radiation Disaster.

    Report comment

  • Pensacola Tiger Pensacola Tiger

    Whales consume plankton, so bioaccumulation of cesium from Fukushima ironically may be the thing that finally stops the Japanese from hunting whales.

    Report comment

  • AGreenRoad AGreenRoad

    From what I hear, farmers are still growing crops and things in Fukushima Province, and the selling this stuff. Fishermen are catching fish off the coast in contaminated water and taking them to sell in places other than Fukushima.

    A little cesium in whale meat is not going to stop them..

    It is much more likely that the whales will become so poisoned that they just die, which stops the hunting.

    No more whales. End of dispute.

    The problem with radiation is that it is invisible and almost impossible to measure in food without expensive equipment, not available to the average person.

    Is there a cheap way to test for radiation in food or things like plankton?

    Report comment

  • PhilipUpNorth philipupnorth

    The human body seems to be ideally designed not to survive a serious nuclear accident. We adults seem to have a unique capacity to bioaccumulate seemingly small doses of poisons, including radiation, in our foods into harmful levels in ourselves, as top preditors in the food chain. Remarkably, a seven year old female child is affected by radiation about five times more than her 30 year old father. And his baby is harmed even more than her older sister. Cesium isn't found in nature, folks. We have done this to ourselves.

    Report comment