Determination of radioactivity levels and hazards of soil and sediment samples in Fırtına Valley (Rize, Turkey)

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• 作者：A. Kurnaz ; B. Kü ; ç ; ü ; kö ; meroğ ; lu ; R. Keser ; N.T. Okumusoglu ; F. Korkmaz ; G. Karahan ; U. Ç ; evik
• 关键词：Soil and sediment ; Natural radioactivity ; HPGe detector ; F&#x131 ; rt&#x131 ; na Valley ; Turkey
• 刊名：Applied Radiation and Isotopes
• 出版年：2007
• 期刊代码：6_09698043
• 类别：ce
• 出版时间：November 2007
• 卷：65
• 期：11
• 页码：1281-1289
• 文件大小：330 K

摘要

The natural radioactivity levels in soil and sediment samples of Fırtına Valley have been determined. To our knowledge, there seems to be no information about radioactivity level in the Fırtına Valley soils and sediments so far. For this reason, soil and sediment samples were collected along the Fırtına Valley and analysis on the collected samples were carried out to determine ²³⁸U, ²³²Th, ⁴⁰K and ¹³⁷Cs radioisotopes using high purity germanium detector. The activity concentrations obtained for ²²⁶Ra, ²¹⁴Pb, ²¹⁴Bi, ²²⁸Ac, ²⁰⁸Tl, ⁴⁰K and ¹³⁷Cs are given in the unit of Bq/kg. The results have been compared with other radioactivity measurements in different country's soils and sediments. The radium equivalent activity (Ra_eq), the absorbed dose rate (D), the external hazard index (H_ex), the annual gonadal dose equivalent (AGDE) and the annual effective dose equivalent (AEDE) were also calculated and compared with the international recommended values.