Alpha radioactivity monitoring related to radon-222 in water from wells in metropolitan area of Curitiba (PR), Brazil [Monitoramento da radioatividade alfa relacionada ao radônio-222 em águas de poços da região metropolitana de Curitiba (PR)]
Correa J.N.,Federal Technological University of Paraná |
Paschuk S.A.,Federal Technological University of Paraná |
Kappke J.,Federal Technological University of Paraná |
Denyak V.,Institute Pesquisa Pele Pequeno Principe IPPPP |
And 6 more authors.
Engenharia Sanitaria e Ambiental | Year: 2015
This research objective was to assess the level of randon-222 concentration in well water of the metropolitan region of Curitiba, Paraná. Current work presents the results of indoor222Rn activity ground water samples from artesian wells from aquifers of the region. The studies of radon activity in water were performed using the radon detector AlphaGUARD. The calculations of initial radon activity in water were done considering the222Rn decay correction as well as equilibrium level of222Rn and226Ra observed after 30 days of measurements. Obtained results show that about 70% of measured activity levels of222Rn are higher than the recommended value of 11.1 Bq.L-1, which represent the risk for the human health associated with this radionuclide. The case study showed that previous measurements of radon are recommended for a construction project is implemented. In this case, it is observed that the radon concentrations decrease about 56% in the first water tank and 83% in the second water tank over the well. This fact shows that the actions for mitigation of radon are viable and do not require major modifications to the usual systems of construction. © 2015, ABES - Associacao Brasileira de Engenharia Sanitaria e Ambiental. All rights resevred.