Activity levels of gamma-emitters in Brazil nuts

Autores

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

DOI:

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

Palavras-chave:

Brazil nut, Gamma-ray spectrometry, Ingestion dose

Resumo

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.

Downloads

Os dados de download ainda não estão disponíveis.

Biografia do Autor

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

Referências

CHANG, J.C.; GUTENMANN, W.H.; REID, C.M.; LISK, D.J. Selenium content of Brazil nuts from two geographic locations in Brazil. Chemosphere, v. 30(4), p. 801-802, 1995.

DUNDAR, M.S.; ALTUNDAG, H. Selenium content of Tukish hazelnut varieties: Kara Findik, Tombul and Delisava. Journal of Food composition and Analysis, v.17, p. 707-712, 2004.

PAREKH, P.P.; KHAN, A.R.; TORRES, M.A.; KITTO, M.E. Concentrations of seleni-um, barium, and radium in Brazil nuts. Journal of Food composition and Analysis, 21: 332-335, 2008.

COZOLLINO, S.M.F. Biodisponibilidade de nutrientes, 4rd Ed. Barueri, SP, Brasil: Ma-nole, 2012.

PENNA-FRANCA, E.; FISMAN, M.; LOBAO, N.; COSTA-RIBEIRO, C.; TRINDADE, H.; SANT, P.L. Radioactivy of Brazil nuts. Health Physics, v.14, p. 95-99, 1968.

SMITH, K.A. The comparative uptake and translocation by plants of calcium, strontium, barium and radium I. Bertholletia Excelsa (Brazil Nut Tree). Plant and Soil, v.34, p. 369-379, 1971.

IARC – International Agency for Research on Cancer, Available in: <http://www.iarc.fr/> Last accessed: 30 Jan. 2014.

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.

UNCEAR - United Nations Scientific Committee on the Effects of Atomic Radiation. Sources and effects of ionizing radiation. In: Report to the General Assembly with Scientific Annexes, UNCEAR (2000), New York: United Nations.

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

Downloads

Publicado

01-09-2016

Edição

Seção

Artigos

Como Citar

Activity levels of gamma-emitters in Brazil nuts. Brazilian Journal of Radiation Sciences, 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: 18 jul. 2025.