کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5477557 1521564 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Atmospheric fallout radionuclides in peatland from Southern Poland
ترجمه فارسی عنوان
رادیو اکتیو های اتمسفر در سرزمین های جنوبی لهستان
کلمات کلیدی
بوته ذرت، رادیونوکلئید، میزان انباشت، زمان سنجی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
چکیده انگلیسی
Two peat profiles were collected in a peat bog located in Southern Poland and their geochronology were determined using 210Pb, 238,239+240Pu and 137Cs radiometric techniques. The 210Pb chronologies were established using the constant rate of supply model (CRS) and are in good agreement with the Pu isotopes and 137Cs time markers. Maximum activities of Pu isotopes were found at a depth corresponding to the early 1960s, which is the period characterized by the maximum nuclear weapon tests. The results showed that the 210Pb method is the most accurate technique for the determination age and accumulation rate of a peat. The next part of this study calculated linear accumulation rates by analyzing 238,239+240Pu and 137Cs vertical distributions in the profiles. Activities of fallout isotopes were also measured in plants covering the peatland. The highest activities of 137Cs and 210Pb were found in Calluna vulgaris samples, and 239+240Pu were found only in two samples (C. vulgaris and leaves of Oxycoccus quadripelatus).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Radioactivity - Volumes 175–176, September 2017, Pages 25-33
نویسندگان
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