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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Levels of Cs-137 and K-40 in marine superficial sediments near the Angra Nuclear Power Plant (Angra dos Reis, SE Brazil)

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de Lima Ferreira, Paulo Alves [1] ; Amorim, Lais Farina [1] ; Tura, Pedro Marone [1] ; Medeiros Zacheo, Valter Andre [1] ; Lopes Figueira, Rubens Cesar [1]
Total Authors: 5
[1] Univ Sao Paulo, IO, BR-05508120 Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: RADIOCHIMICA ACTA; v. 103, n. 10, p. 729-735, OCT 2015.
Web of Science Citations: 1

This study evaluated the spatial distribution of two environmentally relevant radionuclides, Cs-137 and K-40, in marine superficial sediments around the Angra Nuclear Power Plant, the only Brazilian nuclear power plant complex, thus establishing a baseline for bottom sediments, given the international importance of environmental monitoring around nuclear facilities. It was observed that these radionuclides are mostly present in the muddy sediments as a result of their stronger association with its fine-grained fraction, and that their lowest levels are located around the liquid effluent discharge of the plant, as a consequence of the prevented deposition of fine sediments due to the strong discharge water flux. The comparison of the Cs-137 activities in the region with other locations in the world showed that the presence of this artificial nuclide is due to the atmospheric fallout from past nuclear tests made during the ColdWar, not to the nuclear power plant activities. (AU)

FAPESP's process: 14/08016-6 - Study methods of parameters and processes of marine sedimentary dynamics with natural and artificial radionuclides
Grantee:Paulo Alves de Lima Ferreira
Support type: Scholarships in Brazil - Doctorate