{"title":"Altitude-Dependent Deposition of 137Cs Radionuclide in Soils of the Mountains of Koya District in the Kurdistan Region, Iraq","authors":"S. Z. Sedeeq, J. M. Smail, S. T. Ahmad","doi":"10.1134/S1066362226030136","DOIUrl":null,"url":null,"abstract":"<p>The effects of soil organic matter, moisture content, and soil texture on the retention of the fallout radionuclide <sup>137</sup>Cs in soils from several mountains were studied. A high-resolution gamma-ray measurement system based on a high-purity germanium detector was used to measure the activity concentration of <sup>137</sup>Cs in soils collected from Bawajy, Haibatsultan, Bnabawe, Keshke, and Awagird mountains, which are located in the Koya district of the Kurdistan region, northeast of Iraq. The activity concentration levels of <sup>137</sup>Cs ranged from 0.0 to 102.9 Bq kg<sup>–1</sup> with a mean value of 37.2 Bq kg<sup>–1</sup>. The mean values of absorbed dose rate and annual effective dose rate were found to be 1.12 nGy h<sup>–1</sup> and 1.37 µSv year<sup>–1</sup>, respectively. The results obtained tend to exhibit a linear correlation between the altitudes of the sampling sites and the <sup>137</sup>Cs concentration levels.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 3","pages":"398 - 408"},"PeriodicalIF":0.9000,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1066362226030136","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
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Abstract
The effects of soil organic matter, moisture content, and soil texture on the retention of the fallout radionuclide 137Cs in soils from several mountains were studied. A high-resolution gamma-ray measurement system based on a high-purity germanium detector was used to measure the activity concentration of 137Cs in soils collected from Bawajy, Haibatsultan, Bnabawe, Keshke, and Awagird mountains, which are located in the Koya district of the Kurdistan region, northeast of Iraq. The activity concentration levels of 137Cs ranged from 0.0 to 102.9 Bq kg–1 with a mean value of 37.2 Bq kg–1. The mean values of absorbed dose rate and annual effective dose rate were found to be 1.12 nGy h–1 and 1.37 µSv year–1, respectively. The results obtained tend to exhibit a linear correlation between the altitudes of the sampling sites and the 137Cs concentration levels.
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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