Uranium concentration and the annual committed effective dose in some selected medicinal plants commonly used in Iraq have been determined using fission tracks technique etch in twelve medical plants samples using CR-39 track detector. The results show that the uranium concentration ranged from 0.044±0.021 ppm in Thyme sample to 0.2±0.03 ppm in Black Pepper and Cardamom samples with an average value of 0.14 ±0.0 4ppm. The average annual effective dose due to ingestion of uranium radionuclide was 13.77x10 -5 mSv/y, which is below the world average annual committed effective dose of 0.3 mSv/y for ingestion of natural radionuclides.
The study include measurements of radon concentration in water samples for a total of eleven selected locations from Nineveh province. The natural exposure method using CR-39 track detector and the sealed cuptechniquewere chosen for analysis of radon concentration. Radon content in water samples of the study area ranges from 17.4Bq/l in Talskuf to 36.1 Bq/l in Sad Al-Mosul with an average value 26.37 Bq/l, all measured 222 Rn activity concentrations in water are below the European Commission recommended level for radon in drinking water of 100 Bq/l.The results of the annual effective dose ranged from 64µSv/y in Talskuf to 132 µSv/y in Sad Al-Mosul, the total annual effective dose in 54.54% locations of the studied area are found to be within the safe limit (0.1 mSv/year) recommended by World Health Organization and EU Council and 45.45% locations are exceeding the annual effective dose limit of 0.1 mSv/y.
The Gas of the radon (Rn-222) can reach into the space of the houses in many ways, such as water supply, the emission from building materials, and the leakage through the soil. The aim of this study is determination of the concentrations of radon and uranium in ten soil samples of the sediment mud of houses' water tanks in Nineveh province, as well as ten soil samples have been taken from the same areas. This was achieved by using a technique of accounting the accumulative nuclear track on the detector LR-115, and by using the test tubes. The results indicated that the concentrations of the radon and uranium in the sediment mud were (4.98-40.555kBq.m 3 ) & (0.35-2.83ppm) respectively, were as the values of soil samples were (1,44-58.84 kBq.m 3 ) & (0.08-3.3ppm) respectively.
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