ANNUAL EFFECTIVE RADIATION DOSES FROM NATURAL SOURCES IN MOLDAVIA

摘要

Table V summarizes the annual effective dose both per capita and collective arising from natural radiation exposure of the Moldavian population. The average annual effective dose from the natural background of Moldavia is about 2500 μSv (292 μSv cosmic irradiation, 434 μSv terrestrial gamma irradiation, 223 μSv ingestion of natural radionuclides, 1330 μSv and 210 μSv inhalation of ~(222)Rn and ~(220)Rn short lived decay products), with the most important contribution from ~(222)Rn progeny (53.5%). The corresponding collective effective dose of about 13 000 man·Sv may be responsible for 650 potential fatal cancers annually.