2014
DOI: 10.1021/es404961w
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Airborne Plutonium and Non-Natural Uranium from the Fukushima DNPP Found at 120 km Distance a Few Days after Reactor Hydrogen Explosions

Abstract: Plutonium (Pu) and non-natural uranium (U) originating from the Fukushima Daiichi Nuclear Power Plant (FDNPP) were identified in the atmosphere at 120 km distance from the FDNPP analyzing the ratio of number of atoms, following written as n(isotope)/n(isotope), of Pu and U. The n((240)Pu)/n((239)Pu), n((241)Pu)/n((239)Pu), n((234)U)/n((238)U), n((235)U)/n((238)U) and n((236)U)/n((238)U) in aerosol samples collected before and after the FDNPP incident were analyzed by accelerator mass spectrometry (AMS) and ind… Show more

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Cited by 82 publications
(62 citation statements)
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“…This is very important, as in case of nuclear accidents, concentrations close to the source are high enough to cause health problems to humans and the environment, and miscalculations may lead to unrealistic assessments that in turn can trigger panic among the members of the public. Moreover, a validation of several labile and refractory rare radionuclides ( 90 Sr, 95 Nb, 99 Mo, 110m Ag, 129m Te, 132 Te, 134 Cs, 136 Cs, 238 Pu, 239,240 Pu, 241 Pu, 241 Am) was also attempted using scattered measurements reported by several Japanese research groups (Doi et al, 2013;Igarashi et al, 2013;Kanai, 2012;Shinonaga et al, 2014;Thakur et al, 2013).…”
Section: Response From Surface Activity Concentrationsmentioning
confidence: 99%
“…This is very important, as in case of nuclear accidents, concentrations close to the source are high enough to cause health problems to humans and the environment, and miscalculations may lead to unrealistic assessments that in turn can trigger panic among the members of the public. Moreover, a validation of several labile and refractory rare radionuclides ( 90 Sr, 95 Nb, 99 Mo, 110m Ag, 129m Te, 132 Te, 134 Cs, 136 Cs, 238 Pu, 239,240 Pu, 241 Pu, 241 Am) was also attempted using scattered measurements reported by several Japanese research groups (Doi et al, 2013;Igarashi et al, 2013;Kanai, 2012;Shinonaga et al, 2014;Thakur et al, 2013).…”
Section: Response From Surface Activity Concentrationsmentioning
confidence: 99%
“…Additionally, Fukushima accident-sourced Pu isotopes were also identified with high 240 Pu/ 239 Pu atom ratios (0.303-0.365) in litter, soil, aerosol and black substance samples [9,19,20]. These deposited radionuclides can be transported downstream to the ocean via inland river runoff.…”
Section: Introductionmentioning
confidence: 99%
“…In the terrestrial environment around the FDNPP site, the Pu isotopes released from the accident were characterized by high atom ratios of 240 Pu/ 239 Pu (0.30 -0.33) and 241 Pu/ 239 Pu (0.103 -0.135) [6], and were detected in various environmental samples, such as, soil, litter, dust (black substances) and aerosol samples and the total released amounts of Pu isotopes were estimated to be 1.0 -3.5 × 10 9 , 1.1 -2.6 × 10 11 Bq, and 2.9 -6.9 × 10 9 Bq for 239+240 Pu, 241 Pu and 238 Pu, respectively [3,[6][7][8][9][10]. However, the amount of Pu isotopes directly released into the marine environment remains unknown.…”
Section: Introductionmentioning
confidence: 99%