2016
DOI: 10.15392/bjrs.v4i1.200
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Activity levels of gamma-emitters in Brazil nuts

Abstract: Activity concentrations of the radionuclides 137 Cs, 40 K, 226 Ra and 228 Ra were determined in Brazil nuts acquired at points of sale between 2010 and 2013. Results indicated that the estimated annual effective radioactive dose due to ingestion of Brazil nuts is 27% of the annual dose limit of 1 mSv y -1 for public exposure, according to the International Commission on Radiological Protection (ICRP). To estimate this dose the highest activity concentration obtained for each radionuclide was considered, assum… Show more

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Cited by 3 publications
(4 citation statements)
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References 13 publications
(15 reference statements)
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“…For Ra-224 in Brazil nut, Martins et al (2012) found (15.8 ± 3.2) Bq/kg and Parekh et al (2008) found (9.8 ± 1) Bq/kg. For Brazil nuts, the AC of radionuclides are comparable, and in agreement with the results from different localities of Brazil (Penna-Franca et al, 1968;Parekh et al, 2008;Martins et al, 2012;Armelin, 2016).…”
Section: Resultssupporting
confidence: 89%
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“…For Ra-224 in Brazil nut, Martins et al (2012) found (15.8 ± 3.2) Bq/kg and Parekh et al (2008) found (9.8 ± 1) Bq/kg. For Brazil nuts, the AC of radionuclides are comparable, and in agreement with the results from different localities of Brazil (Penna-Franca et al, 1968;Parekh et al, 2008;Martins et al, 2012;Armelin, 2016).…”
Section: Resultssupporting
confidence: 89%
“…The mean of AC for K-40 in Brazil nut found by Armelin (2016) was (225 ± 59) Bq/kg. For Ra-226 in Brazil nut, Armelin (2016) found (44 ± 14) Bq/kg, Martins et al (2012) found (104 ± 14) Bq/kg and Parekh et al (2008) found (23.0 ± 1.7) Bq/kg. For Ra-228 in Brazil nut, Armelin (2016) found (153 ± 51) Bq/kg, Martins et al (2012) found (99 ± 16) Bq/kg and Parekh et al (2008) found (24 ± 3) Bq/kg.…”
Section: Resultsmentioning
confidence: 87%
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