Avaliação da concentração de radão nas águas minerais naturais nos estabelecimentos termais Portugueses

• Autor(a) principal: A.S. Silva
• Data de Publicação: 2017
• Outros Autores: Maria De Lurdes Dinis
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: https://hdl.handle.net/10216/119563

The natural mineral waters used in therapeutic treatments in thermal establishments have diverse chemical compositions, sometimes containing significant amounts of natural radionuclides, such as radon. The objective of this study was to evaluate the radon concentration of natural mineral waters in the holeand spring, and in the treatment sites (buvette, emanatory, inhalation-ORL techniques, thermal pool and vichy shower) of 17 Portuguese thermal establishments focusing on occupational exposure. Fifty-four samples of natural mineral water were collectedin the abstractions and treatment sites of these thermal establishments. The results obtained for the radon concentration in water vary between 0.1and 6949 Bq/L, with a geometric mean of 175 Bq/L and arithmetic mean of 842 Bq/L. It was found that 50% of the results obtained for the radon concentration in the natural mineral water were higher than the reference level recommended by the EU (100 Bq/L), while 20% of the results exceeded the action limit (1000 Bq/L) . On the other hand, 26% of the results exceed the parametric value provided in Decree-Law 23/2016 (500Bq/L). In some cases, the high values obtained in natural mineral water are worrisome and may involve high concentrations of radon in indoor air and consequently occupational exposure to radon