Journal ArticleDOI
Global distribution of Pu isotopes and 237Np.
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TLDR
From the results, it is concluded that fallout 237Np/239Pu atom ratios are generally lower in the Southern Hemisphere than in the Northern Hemisphere, and 237NP/ 239Puatom ratios are more device-dependent, hence more variable, than counterpart 240Pu/239Np atom ratios.About:
This article is published in Science of The Total Environment.The article was published on 1999-09-30. It has received 413 citations till now.read more
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Isotopic evidence of plutonium release into the environment from the Fukushima DNPP accident.
Jian Zheng,Keiko Tagami,Yoshito Watanabe,Shigeo Uchida,Tatsuo Aono,Nobuyoshi Ishii,Satoshi Yoshida,Yoshihisa Kubota,Shoichi Fuma,Sadao Ihara +9 more
TL;DR: The isotopic evidence for the release of Pu into the atmosphere and deposition on the ground in northwest and south of the Fukushima DNPP in the 20–30 km zones is reported and the high activity ratio of 241Pu/239+240Pu (> 100) highlights the need for long-term 241Pp dose assessment, and the ingrowth of 241Am.
Journal ArticleDOI
Release of plutonium isotopes into the environment from the Fukushima Daiichi Nuclear Power Plant accident: what is known and what needs to be known.
TL;DR: Analysis of published studies related to the release of Pu from the FDNPP accident indicates that a trace amount of Pu isotopes was released into the environment from the damaged reactors but not from the spent fuel pools located in the reactor buildings.
Journal ArticleDOI
Sub-ice-shelf sediments record history of twentieth-century retreat of Pine Island Glacier
James Smith,Thorbjørn Joest Andersen,M. Shortt,Amy M. Gaffney,Martin Truffer,Timothy P. Stanton,Robert Bindschadler,Pierre Dutrieux,Adrian Jenkins,Claus-Dieter Hillenbrand,Werner Ehrmann,Hugh F. J. Corr,N. Farley,N. Farley,S. Crowhurst,David G. Vaughan +15 more
TL;DR: The present thinning and retreat of Pine Island Glacier in West Antarctica is part of a climatically forced trend that was triggered in the 1940s, and results suggest that, even when climate forcing weakened, ice-sheet retreat continued.
Journal ArticleDOI
Determination of plutonium and other transuranic elements by inductively coupled plasma mass spectrometry: A historical perspective and new frontiers in the environmental sciences
TL;DR: Inductively coupled plasma mass spectrometers (ICPMS), particularly with sector field mass analyzers, has emerged in the past several years as an excellent analytical technique for rapid, highly sensitive determination of transuranic elements (TRU) in environmental samples.
Journal ArticleDOI
Reviews and syntheses: 210Pb-derived sediment and carbon accumulation rates in vegetated coastal ecosystems-setting the record straight
Ariane Arias-Ortiz,Pere Masqué,Jordi Garcia-Orellana,Oscar Serrano,Inés Mazarrasa,Núria Marbà,Catherine E. Lovelock,Paul S. Lavery,Carlos M. Duarte +8 more
TL;DR: In this paper, the authors discuss the use of the 210Pb ドラゴン dating technique to determine the rate of Corg accumulation in vegetated coastal habitats. But, they do not consider the effects of sediment mixing and erosion on Corg stocks.
References
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Journal ArticleDOI
Global Inventory and Distribution of Fallout Plutonium
TL;DR: In this article, the accumulated fallout and geographical distribution from this unexpected release as well as from nuclear testing are described, and an accidental stratospheric injection of Pu-238 in 1964 resulted in almost a three-fold increase in the global fallout of this isotope.
Book
The Elements Beyond Uranium
TL;DR: In this article, a primer on transuranium elements is given, covering all aspects of these elements, including their discovery, chemical properties, nuclear properties, chemical synthesis reactions, experimental techniques, natural occurrence, superheavy elements, and predictions for the future.
Elements beyond uranium
Glenn T. Seaborg,Walter Loveland +1 more
TL;DR: The 12th volume in a series on transuranium elements was published by as discussed by the authors, with a chapter devoted to practical applictions of uranium, and the transuranic elements.
Journal ArticleDOI
Heavy Isotope Abundances in Mike Thermonuclear Device
Herbert Diamond,P. R. Fields,C. S. Stevens,Martin H. Studier,S. Fried,Mark G. Inghram,David C. Hess,G. L. Pyle,J. F. Mech,W. M. Manning,Albert Ghiorso,Stanley G. Thompson,G. H. Higgins,Glenn T. Seaborg,C.I. Browne,H.L. Smith,R. W. Spence +16 more
TL;DR: In this paper, the long-lived products of successive nuclear decays from these isotopes were measured mass spectrometrically and radiometrically, and some nuclear properties of neutron-rich heavy nuclides, not subject to ordinary investigation were inferred.
Journal ArticleDOI
Determination of 240Pu/239Pu ratio in environmental samples based on the measurement of Lx/alpha-ray activity ratio.
TL;DR: The determination of the 240Pu /239Pu isotopic ratio in environmental samples has been attempted by the measurement of the Lx/alpha-ray activity ratio using a Ge- LEPS (low-energy photon spectrometer) and a surface-barrier Si detector.