Environmental Radiation and the Lung

Hamrick, Philip E.; Walsh, Philip

doi:10.2307/3428256

Cited by 2 publications

(1 citation statement)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It follows that exposure to alpha radiation from smoke inhalation may also be a factor in cigarette-induced bronchial cancer (Radford, 1974). Nevertheless, the reader should understand that estimates for continuous background inhalation exposure to Rn-222 and daughters (200-2000 pCi/d) greatly exceed that value estimated for Rn-222 and daughter exposure from tobacco smoke (Martell, 1974;Hamrick and Walsh, 1974).…”

Section: Inhalation Of Tobacco Smoke Is Ranked Second To Food In Provmentioning

confidence: 95%

Polonium-210 and lead-210 in food and tobacco products: a review of parameters and an estimate of potential exposure and dose

Watson¹

1983

View full text Add to dashboard Cite

Food-chain transport of Pb-210 and Po-210 from soil to edible plant parts and from animal feed to meat and milk were evaluated from a review of literature. The degree of transfer was characterized by estimating concentration factors (unweighted arithmetic means) as well as the transfer coefficients B v , B r (unweighted geometric means), f m and f f (unweighted arithmetic means). Global dietary intake of Pb-210 and Po-210 was also summarized, and 50-year dose estimates to target organs calculated. The greatest estimated ingestion doses were those to populations with large dietary complements of animal protein in the form of seafood (Japan) or caribou/reindeer muscle and organ meats (Arctic Eskimos and Lapps). The magnitude of this latter source illustrates the importance of simple food chains in generating significant exposures to populations dependent upon them. The origin and magnitude of inhalation exposure and dose from tobacco products was also assessed. For the majority of internal organs evaluated, the dose resulting from smoking commercially available tobacco products is comparable to or greater than the dose estimates for ingestion of naturally occurring dietary Pb-210 and Po-210. vii distance from supposed sites of release due to the extreme mobility of the noble gas Rn-222 [T ½ = 3.8 d (Kocher, 1977)], an intermediate product of Ra-226 decay. The rapid decay of Rn-222 in the atmosphere generates Pb-210 and Po-210, which are adsorbed by aerosols and returned to earth as surficial deposition or rainout. The degree of potential long-range atmospheric transport in North America has been previously demonstrated for Rn-222 (Travis et al., 1979). Other intermediates in the decay

show abstract

Section: Inhalation Of Tobacco Smoke Is Ranked Second To Food In Provmentioning

confidence: 95%