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Updated: Nov 19, 2025

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation
Published on: July 4, 2014
137Cs activity concentration in soil of Alagoas State, Brazil
Rogério de Andrade Filgueiras1, Ricardo Washington Dutra Garcêz1, Leandro Barbosa da Silva1
1Nuclear Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Abstract:
Cesium 137 is present in worldwide. To evaluate its deposition in the Brazilian state of Alagoas a total of 41 samples were collected by the Geological Survey of Brazil, then processed and analyzed by gamma-ray spectrometry with hyperpure germanium detectors. The activity concentration varied from (0.3 ± 0.1) Bq/kg to (1.1 ± 0.4) Bq/kg. The present study shows that the Borborema Plateau acts as a natural barrier to rainfall, favoring the deposition of 137Cs on the local soil.

