Distribution characteristics of 137Cs, Pu isotopes and 241Am in soil in Korea

Autor:	T.S. Park, Seoung Ho Lee, K.B. Lee, J.M. Lee, J. Šakalys, Jung-Suk Oh, G. Lujaniene, D. Valiulis
Rok vydání:	2013
Předmět:	Radionuclide Radiation Soil test Isotope Radiochemistry chemistry.chemical_element Americium Cesium Radioisotopes Plutonium Sedimentary depositional environment chemistry Environmental chemistry Environmental science Surface layer
Zdroj:	Applied Radiation and Isotopes. 81:315-320
ISSN:	0969-8043
Popis:	Cesium-137, Plutonium isotopes and 241Am were studied in soil samples collected from Korea between 2006 and 2008 to provide information on the distribution and origin of Pu isotopes and 241Am. The vertical profiles of radionuclides showed higher activity concentrations at the surface layer and then gradually decreased with depth. A good correlation between 137Cs and 239,240Pu was observed, whereas a poor relationship between 137Cs and 241Am was found. The 238Pu/239,240Pu, 241Am/239,240Pu and 239,240Pu/137Cs activity ratios were concordant to those of the global fallout ratios. Furthermore, the atomic ratios of 240Pu/239Pu in the samples provided the information of Pu depositional history and the origin of Pu isotopes in Korea.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f25cc5cdbb1f8e9a85e15b0c1d6fb139 https://doi.org/10.1016/j.apradiso.2013.03.074 Zobrazit plný text záznamu Full Text from ScienceDirect