Activity levels of gamma-emitters in Brazil nuts

Autores/as

  • Maria José Aguirre Armelin Institutode Pesquisas Energéticas e Nucleares IPEN-CNEN/SP

DOI:

https://doi.org/10.15392/bjrs.v4i1.200

Palabras clave:

Brazil nut, Gamma-ray spectrometry, Ingestion dose

Resumen

The activity concentrations of radionuclides 137Cs, 40K, 226Ra and 228Ra were determined in Brazil nuts acquired at point of sale between 2010 and 2013. Results indicated that the estimated annual effective radioactive dose due to ingestion of Brazil nuts is 27% of annual dose limit of 1 mSv y-1 for public exposure, according to the International Commission on Radiological Protection (ICRP). In this evaluation, the highest activity concentration obtained for each radionuclide was considered with an assumed annual consumption of 1.5 kg.

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Biografía del autor/a

  • Maria José Aguirre Armelin, Institutode Pesquisas Energéticas e Nucleares IPEN-CNEN/SP
    Centro do Reator de Pesquisa - CRPq

Referencias

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SANTOS, E.E; LAURIA, D.C.; AMARAL, E.C.S.; ROCHEDO, E.R. (2002) Daily In-gestion of 232Th, 238U, 226Ra, 228Ra and 210Pb in vegetables by inhabitants of Rio de Janeiro city. Journal of Environmental Radioactivity, v.62, p. 75-86, 2002.

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ICRP - International Commission on Radiological Protection. Protection of the public in situations of prolonged radiation exposure. ICRP (1999), Publication 82, Oxford: Pergamon Press.

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Publicado

2016-09-01

Número

Vol. 4 Núm. 1 (2016)

Sección

Articles

Licencia

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Cómo citar

Activity levels of gamma-emitters in Brazil nuts. Brazilian Journal of Radiation Sciences (BJRS), Rio de Janeiro, Brazil, v. 4, n. 1, 2016. DOI: 10.15392/bjrs.v4i1.200. Disponível em: https://bjrs.org.br/revista/index.php/REVISTA/article/view/200. Acesso em: 17 jul. 2025.