FERREIRA, A. C. M.

LAPA, C. F.

PEREIRA, N. R.

PEREZ, D. V.

PICANÇO JÚNIOR, P. L.

ROCHEDO, E. R. R.

SILVA, F. L. da

WASSERMAN, M. A. V.

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2013 International Nuclear Atlantic Conference - INAC 2013 Recife, PE, Brazil, November 24-29, 2013 ASSOCIAÇÃO BRASILEIRA DE ENERGIA NUCLEAR - ABEN ISBN: 978-85-99141-05-2  EVALUATION OF THE MOBILITY OF 137CS IN SOIL PROFILES OF THE PANTANAL REGION  Fernanda L. da Silva1, Daniel Vidal Pérez2, Péricles L. Picanço Júnior3, Elaine R. R. Rochedo4, Ana C. M. Ferreira1, Celso F. Lapa5, Nilson Rendeiro2 and Maria Angélica V. Wasserman5  1 Instituto de Radioproteção e Dosimetria Comissão Nacional de Energia Nuclear Avenida Salvador Allende, s/n 22783-127 Rio de Janeiro, RJ fleite@ird.gov.br anacris@ird.gov.br  2 Centro Nacional de Pesquisa de Solos Empresa Brasileira de Pesquisa Agropecuária Rua Jardim Botânico, 1024 22460-000 Rio de Janeiro, RJ chpd@cnps.embrapa.br nilson.rendeiro@embrapa.br   3 Instituto BioAtlântica Rua Goethe, 75 22281-020 Rio de Janeiro, RJ pericles.picanco@gmail.com  4 Programa de Engenharia Nuclear Instituto Militar de Engenharia Praça General Tibúrcio, 80, 4º andar 22290-270 Rio de Janeiro, RJ elainerochedo@gmail.com  5 Instituto de Engenharia Nuclear Comissão Nacional de Energia Nuclear Rua Hélio de Almeida, 75 21941-906 Rio de Janeiro, RJ lapa@ien.gov.br mwasserman@ien.gov.br   ABSTRACT  Radioactive pollutants can cause impact on the environmental quality of soils and represent a risk to human health. Radioecological studies have shown that soils with low pH, low organic matter content and low fertility are more vulnerable to contamination by 137Cs, since the transfer to plants is high. In this study, some surface horizons of soils from Jaraguari, situated at Brazilian Pantanal were assessed in order to map their vulnerability to contamination by 137Cs. It was also proposed some mitigation measures adapted to the regional scenario in order to optimize radiological protection for rural areas. A conceptual model established to detect the vulnerability of radioactively contaminated soils was applied for soils located in the municipality of Jaraguari (Mato Grosso do Sul). This conceptual model was established based on the relationship between reference values of the soil-to-plant transfer factor (TF) for INAC 2005, Santos, SP, Brazil.  137Cs and critical pedological parameters for each radiovulnerability category (pH, CTC and exchangeable K). The application of this conceptual model to a soil databank using Geographic Information System (GIS) tools generated vulnerability soils maps. This result identified that most of Pantanal soils presented very low radiovulnerability, but it was possible to detect some small areas presenting extreme radiovulnerability. It was possible to conclude that these small areas is not indicated for activities that presents a potential risk for 137Cs contamination and also it must receive priority actions for remediation in the case of accident, since a superficial contamination with 137Cs in these areas can lead to a contamination of subsoil and to a significant spread of contamination via groundwater.       

Evaluation of the mobility of 137cs in soil profiles of the pantanal region.

http://www.alice.cnptia.embrapa.br/alice/bitstream/doc/973989/1/evaluation.pdf

Evaluation of the mobility of 137cs in soil profiles of the pantanal region.

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