Dr. Alex Rosen, MD via TEPCO: 2,500,000 MBq [2.5 trillion Bq] estimated Plutonium-238/239/240/241 emissions from March 12-15, 2011
The Real Lessons of Fukushima, March 11, 2012: Also almost all the Np-239 and Pu-239 have been carried over the ocean.
Press Conference, March 27, 2011: REPORTER: According to NISA, the stagnant water in the nuclear power plant, whether the water contains plutonium has not been investigated by the Cabinet I believe, and I think extensive investigation is necessary don’t you think? CHIEF CABINET SECRETARY EDANO: [...] the soil within the nuclear power plant premise is now being investigated. I have been reported that the measurement is not easy [...]
Ken Buesseler (Woods Hole Oceanographic Institution, USA) and Michio Aoyama (Meteorological Research Institute, Japan), Aug. 4, 2012: Surface ocean in June 2011, see slightly elevated Pu -from direct discharge? -Pu removed on sinking particles, so Cs/Pu ratio increases over time (Kenna, Masque, Buesseler et al. unpublished) [...] Seafloor sedimentation is small, but important sink for Cs (Pu?)
Ken Buesseler Interview on WCAI, April 13, 2011 (at 6:45 in): As we basically cool these reactors down with seawater and that seawater leaks back directly into the ocean, through discharge canals or through groundwater, that also is most likely carrying with it things like plutonium.
Published: November 26th, 2013 at 2:38 pm ET