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  1. Maria Villa Alfageme on March 7, 2021 at 4:37 am

    Thank you for this interesting poster. From which samples were estimated the 241Pu/239Pu and 240Pu/239Pu ratios associated to the accident? Pu atmospheric deposition was done in the form of hot particles?
    Thank you!

  2. Jian Zheng on March 8, 2021 at 7:58 pm

    Thanks for your kind comment. We estimated the 241Pu/239Pu and 240Pu/239Pu ratios in marine sediments collected within 30 km zone off the Fukushima Daiichi Nuclear Power Plant. Information on the Pu atmospheric deposition was obtained from Pu deposited in litter samples collected in Fukushima forest 30 km away from the nuclear power plant in April 2011. We recently measured Pu isotope ratios (242Pu/239Pu and 240Pu/239Pu) in Cs-enriched radioactive particles: First determination of Pu isotopes (239Pu, 240Pu and 241Pu) in radioactive particles derived from Fukushima Daiichi Nuclear Power Plant accident. Details can be seen in Scientific Reports,