2.Tıbbi Jeoloji Çalıştayı,, Antalya, Turkey, 4 - 06 December 2013, pp.273-275
The human environment is surrounded with natural radiation with
main components of cosmic and cosmogenic radiation, terrestrial gamma radiation
from natural radio nuclides in rocks and soil, and natural radioactive substances in
our diet and in the air we breathe. More than half of the natural radiation that human
receives are caused by radon gas or by its decay products. Radon is a colorless,
odorless and radioactive gas which produced by the radioactive decay of the element
radium. Naturally radioactive Uranium is the first element in a long series of decay that produces radium and radon which placed in rocks and soil. Radon can leave
the rocks and soils easily into the pore spaces between grains of soil. It is also fairly
soluble in water and organic solvents. Accordingly that it can travel a great distance
before it decays.
Radon gas, which lies in Uranium decay series, is released from underground since
Uranium and its decay products are easily dissolved in water. High exposure to
radon gas may lead to lung cancer and some other major health problems. Radon
gas, which can accumulate indoors in time, emits alpha particles and is directly
responsible for the half of the natural radioactivity. Determination of indoor radon
concentrations is very important since inhalation of radon and radon daughters in
the dwellings with high radon levels has been related with the risk of lung cancer.
In this study, 222Rn concentration was measured in Elazig houses and factories by
forty-seven pairs of CR-39 detectors. Detectors were obtained from the laboratory
of Cekmece Nuclear Research and Training Centre. They were etched and evaluated
at the same laboratory. The measured concentrations were ranging between 17 and
184 Bq.m-3 with a mean value of 47 Bq.m-3.