Determination of the Specific Activity of Cs137 and K40 in Environmental Nineveh Governorate

Emhemed, Ahmad Kh.; M. Yousuf, Rasheed; Hassan, Hana

doi:10.33899/rjs.2008.42085

	Determination of the Specific Activity of Cs137 and K40 in Environmental Nineveh Governorate
Rafidain Journal of Science
Article 18, Volume 19, Issue 4, 2008, Pages 205-220 PDF (0 K)
DOI: 10.33899/rjs.2008.42085
Authors
Ahmad Kh. Emhemed¹; Rasheed M. Yousuf^* ²; Hana Hassan¹
¹Department of Physics College of Education Mosul University
²Department of Physics College of Science Mosul University
Abstract
The background radioactivity of environmental Nineveh governorate was determined by measuring the radioactivity for each one of cesium Cs137 and potassium K40 in soil, plant and milk using highly parity germanium (HPGe) detector with crystal volume (76 cc) and energy resolution (2.2 keV) at the gamma line (1332 keV) of Co60 radioactive calibration source. The measurements and sampling procedure cover (41) positions from different parts of Nineveh governorate, the results shows that Cs137 specific activity range is: (15.89 – 70.97) Bq/kg in soil, (1.1 – 3.73) Bq/kg in plant and (o.63 – 2.1) Bq/kg in milk. While the K40 specific activity range is: (323.86 – 1025.0) Bq/kg in soil, (210.51 – 599.134) Bq/kg in plant and (200.25 – 480.1) Bq/kg in milk. It is noted that the results in this work shows good agreement with other literatures and the activity levels are within the reasonable values denoted by authorized agency, as well as the fluctuations in results may be due to the geological and geographical differences.

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