During the war in 1991 and 1992, because of artillery bombardment, the
citizens of Croatia have been forced to live underground in shelters
and cellars and therefore they have been exposed to an additional rado
n radiation. Rn concentration in shelters (cellars) and dwellings of O
sijek and Zagreb were measured by means of a silicon detector (Radhome
) and also, at several locations, by an LR-115 nuclear track detector.
Estimated monthly radon exposures in dwellings and cellars of osijek
or Zagreb were (2.88+/-1.58)x10(4) Bq h m-3 and (6.62+/-3.17)x10(4) Bq
h m-3, respectively, or (1.94+/-0.72)x10(4) Bq h m-3 and (7.46+/-7.78
)x10(4) Bq h m-3. Inhabitants of Osijek and Zagreb have received, on t
he average, the effective dose equivalent of 4.1 and 2.6 mSv y-1, resp
ectively.