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Experts: Plutonium levels 10,000,000 times normal in water below Fukushima reactors — Plutonium hit record high off coast in 2014 — “Has been transported relatively long distances” – Every sample taken from rivers flowing into Pacific had Pu-239, Pu-240, Pu-241,and Pu-242 from plant
ENE News
Scientists from Japan, Belgium, and French gov’t (pdf), 2015: Tracing the dispersion of contaminated sediment with plutonium isotope measurements in coastal catchments of Fukushima Prefecture — The Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident led to important releases of radionuclides into the environment, and trace levels of plutonium (Pu) were detected in northeastern Japan… In this study, we measured Pu isotopic ratios in recently deposited sediments along rivers draining the most contaminated part of the inland radioactive plume… Results showed that the entire range of measured Pu isotopes (i.e. 239Pu, 240Pu, 241Pu, and 242Pu) were detected in all samples, although in extremely low concentrations. The 241Pu/239Pu atom ratios measured in sediment deposits (0.0017 – 0.0884) were significantly higher than the corresponding values attributed to the global fallout (0.00113 – 0.00008 on average in the Northern Hemisphere between 31-71 N)… These results demonstrate that this radionuclide has been transported relatively long distances… and deposited in rivers representing a potential source of Pu to the ocean.
See also: Plutonium-241 from Fukushima nearly 70,000 times more than atomic bomb fallout in Japan — Gov’t Labs: Large areas of oceans contaminated by plutonium from events such as Fukushima; Build-up in biosphere expected; Considerable hazard to humans
Published: July 10th, 2015 at 3:50 pm ETBy ENENews |