Determination of 222Rn and 238U Concentrations in Some Selected Samples of Rock for Sulaimani Area (Kurdistan Region-Iraq)

Volume 17 , Issue 4 , December 2015 , Pages 63-74

Authors

¹ University of Sulaimani, Faculty of Science and Science Education, Physics Department

Different rock samples collected from the Mountains located to the west and north of

Sulaimani district. Solid state nuclear track detector technique, CR-39 passive

detectors included, is used for analyzing concentrations Radon. The uranium

concentrations determined from the secular equilibrium between uranium and radon

activity. The concentrations of Radon and Uranium have been calculated. The

maximum and the minimum concentrations determined (4774.524±17.665 and

224401.714) Bq/m3

for Radon and (0.313±0.143 ppm, 14.728±6.731 ppm) for

uranium, respectively. The higher concentration values of both Byara (Mountain of

Balkha) and Penjween is due to sample rocks formation compared to the values

appeared from Ranya and Chaqchaq regions. The highest annual effective dose was

0.8μSv/hr, which is higher than the value 1mSv ~ 0.114 μSv/hr recommended by the

International Commission on Radiological Protection ICRP..

Statistics