Authors:
D. Fávaro IPEN/CNEN-SP Laboratório de Análise por Ativação Neutrônica (LAN)-CRPq Av. Prof. Lineu Prestes 2242 CEP: 05508-000 São Paulo Brazil

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S. Damatto IPEN/CNEN Divisão de Radiometria Ambiental, Centro de Metrologia das Radiações (CMRA) SP Brazil

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E. Moreira IPEN/CNEN-SP Laboratório de Análise por Ativação Neutrônica (LAN)-CRPq Av. Prof. Lineu Prestes 2242 CEP: 05508-000 São Paulo Brazil

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B. Mazzilli IPEN/CNEN Divisão de Radiometria Ambiental, Centro de Metrologia das Radiações (CMRA) SP Brazil

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F. Campagnoli Agência Nacional de Energia Elétrica (ANEEL) Superintendência de Estudos e Informações Hidrológicas/SHISGAN-Q 603 / Módulo J Brasília DF 70830-030 Brazil

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Abstract  

The Rio Grande reservoir lies southeast of the Metropolitan Area of São Paulo. In order to evaluate if the sediments contain a historical registration of anthropogenic activity, four sediment cores were sampled from the reservoir. In these cores the Hg concentration was determined by the CV AAS technique, major and trace elements by instrumental neutron activation analysis and the sedimentation rates by the 210Pb method. The results obtained for Hg are much higher than expected, showing an anthropogenic contribution. As a general trend, the elemental concentration decreases with depth, indicating recent contamination.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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