Natural radioactivity and estimated dose in brazilian tobacco products

dc.creatorOLIVEIRA, ALINE S.G.R. de
dc.creatorDAMATTO, SANDRA R.
dc.creatorINTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
dc.date2018-01-05T10:55:06Z
dc.date2018-01-05T10:55:06Z
dc.dateOctober 22-27, 2017
dc.date.accessioned2023-09-28T14:05:12Z
dc.date.available2023-09-28T14:05:12Z
dc.identifierhttp://repositorio.ipen.br/handle/123456789/28226
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8998480
dc.descriptionTobacco products contain significant concentrations of natural radionuclides from 238U and 232Th series. The consumption of these products increases the internal dose of radiation due to the inhalation of the natural radionuclides. Studies from literature emphasize that tobacco products have measurable concentrations of 210Po and 210Pb, and may contribute significantly to the increase of internal radiation dose and a large number of lung cancer in smokers. The objectives of this work were to determine the concentrations (Bq/kg) of the radionuclides 226Ra, 228Ra, 210Pb and 210Po and calculate the internal doses of radiation due to the consumption of these products. In the present work 71 samples were analyzed, consisting of cigars, unflavored and flavored cigarettes, straw cigarettes, cigars and roll smoke. The samples were purchased in Brazilian popular commercial establishments. The analytical techniques employed were the gross alpha and beta measurement after radiochemical separation for the radionuclides 226Ra, 228Ra, 210Pb and alpha spectrometry for 210Po. The internal radiation doses were calculated with the activity concentrations determined and using the ICRP Publication 119 dose coefficients. An annual consumption of 3,650 kg of tobacco products was considered. The inhalation rates of each radionuclide followed the rates of the current literature. The estimated mean annual dose varied from 76 to 263??Sv/y for the tobacco product studied in this work.
dc.publisherAssocia????o Brasileira de Energia Nuclear
dc.rightsopenAccess
dc.subjectabsorbed radiation doses
dc.subjectactivity levels
dc.subjectalpha decay
dc.subjectalpha spectroscopy
dc.subjectbeta decay
dc.subjectconcentration ratio
dc.subjectinhalation
dc.subjectnatural radioactivity
dc.subjectthorium 232
dc.subjecttobacco products
dc.subjecturanium 238
dc.titleNatural radioactivity and estimated dose in brazilian tobacco products
dc.typeTexto completo de evento
dc.coverageI
dc.localRio de Janeiro, RJ


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