alexa In vivo measurement of unattached radon progeny deposited in the human respiratory tract.
Materials Science

Materials Science

Journal of Nanomedicine & Nanotechnology

Author(s): Butterweck G, Vezz G, Schuler C, Mller R, Marsh JW,

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Abstract Seven nose breathing and seven mouth breathing volunteers were exposed to atmospheres enriched with unattached radon progeny (218Po, 214Pb and 214Bi). The activity of these radionuclides deposited in the respiratory tract was measured in vivo after the exposures. The results of these measurements are in agreement with predictions calculated with the ICRP Publication 66 Human Respiratory Tract Model. Temporal analysis of the activity deposited in the heads of the volunteers leads to the conclusion that a significant amount of the deposited activity associated with particle diameters of about 1 nm is not subject to a fast transport to the gastrointestinal tract as generally reported for larger aerosol particles.
This article was published in Radiat Prot Dosimetry and referenced in Journal of Nanomedicine & Nanotechnology

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