Determination of radon equivalent alpha-doses in different human organs from water ingestion using SSNTD and dosimetric compartmental models

Radon alpha-activities per unit volume have been measured in different drin king water samples belonging to different aquifers and sources by using CR- 39 and LR-115 solid state nuclear track detectors (SSNTD). Radon initial eq uivalent ct-dose rates due to water ingestion have been evaluated in the st omach assuming that all the radon ingested appears in this organ. The influ ence of the origin and quality of the water samples studied has been invest igated. Committed equivalent doses have been determined in different human organs by using dosimetric compartment models. The influence of the radon m ean residence time on the committed equivalent doses in the different compa rtments of the gastrointestinal system has been studied. The committed equi valent dose per unit activity of radon ingested has been evaluated in the s tomach tissue and compared with literature data.