Abstract
The present work is concerned with the measurements of uranium concentrations in forty-nine surface soils samples from selected locations (some of them were measured for the first time as far as authors know) in Al-Diwaniyah governorate by using uranium fission fragment U-235 (n-f), obtained by the bombardment of U-235 with thermal neutrons. The results have shown that the highest uranium concentration in surface soils samples in the selected regions in Al-Diwaniyah governorate was found in (Al-sdeer) region, which was equal to (8.86±0.89 ppm), while the lowest uranium concentration was found in (Al-shamr 2) region which was equal to (2.50±0.92 ppm) The present results have show that the uranium concentrations in the studied surface soils samples were less than the allowed value (11.7 ppm) recommended by UNSCEAR, 1993.
Highlights
Natural radiation has always been part of the human environment
The results have shown that, the highest uranium concentration in surface soils samples in the selected regions in Al-Diwaniyah governorate was found in (Al-sdeer) region, which was equal to (8.86±0.89 ppm), while the lowest uranium concentration was found in (Al-shamr 2) region which was equal to (2.50±0.92 ppm) The present results have show that the uranium concentrations in the studied surface soils samples were less than the allowed value (11.7 ppm) recommended by UNSCEAR, 1993
Radionuclides are found in the environment as naturally occurring elements and as products or by-products of nuclear technologies, one of the most common radionuclides is uranium (U), all isotopes of uranium are radioactive, so it is very important their quantity to be under control [2]
Summary
Natural radiation has always been part of the human environment. Radionuclides are found in the environment as naturally occurring elements and as products or by-products of nuclear technologies, one of the most common radionuclides is uranium (U), all isotopes of uranium are radioactive, so it is very important their quantity to be under control [2]. The soils is naturally radioactive, because of the mineral content. The natural radioactivity may vary considerably from one type of soils to another[5]. Soils radionuclide activity concentration is one of the main determinants of the natural background radiation. When rocks are disintegrated through natural processes, radionuclides are carried in soil by rain and flows. Many earlier studies on measuring the concentrations of uranium in soil , water , and plants are done used different techniques. The following are the most important existing researches on uranium study[6]
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