کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8081859 1521578 2016 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Activity concentration and spatial distribution of radionuclides in marine sediments close to the estuary of Shatt al-Arab/Arvand Rud River, the Gulf
ترجمه فارسی عنوان
غلظت فعالیت و توزیع فضایی رادیونوکلئید در رسوبات دریایی نزدیک حوضه شط العرب / رود اروند رود، خلیج فارس
کلمات کلیدی
غلظت فعالیت رسوب دریایی، مقادیر دوزهای زیستی دریایی، محصولات جانبی نفت و گاز، رودخانه، شط العرب، اروند رود، گلف،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
چکیده انگلیسی
Tigris and Euphrates rivers both emerge in eastern Turkey and cross Syria and Iraq. They unite to Shatt al-Arab/Arvand Rud River and discharge in Arabic/Persian Gulf. The activity concentration of natural and anthropogenic radionuclides was measured during the August of 2011 in a number of surficial sediment samples collected from the seabed along an almost straight line beginning near the estuary mouth and extending seaward. The results exhibited low activity concentration levels and an almost homogeneous spatial distribution except locations where sediment of biogenic origin, poor in radionuclides, dilute their concentrations. Dose rates absorbed by reference marine biota were calculated by the ERICA Assessment Tool considering the contribution of 40 K. The results revealed a relatively low impact of 40 K mainly to species living in, on and close to the seabed. Also, statistical association of radionuclides with selected stable elements (Ca, Ba and Sr) did not indicate presence of by-products related with oil and gas exploitation and transportation activities. Moreover, a semi-empirical sedimentology model applied to reproduce seabed granulometric facies based entirely on radionuclides activity concentrations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Radioactivity - Volume 157, June 2016, Pages 1-15
نویسندگان
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