کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1738790 | 1016814 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Accumulation of 241Am by suspended matter, diatoms and aquatic weeds of the Yenisei River
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
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![عکس صفحه اول مقاله: Accumulation of 241Am by suspended matter, diatoms and aquatic weeds of the Yenisei River Accumulation of 241Am by suspended matter, diatoms and aquatic weeds of the Yenisei River](/preview/png/1738790.png)
چکیده انگلیسی
In this work we experimentally estimated the capacities of the key components of the Yenisei River (Russia): particulate suspended matter (seston), diatom microalgae, and submerged macrophytes for accumulating 241Am from water. In our experiments large particles of seston (>8 μm), comparable in size with diatoms, took up most of americium from water. The accumulation of americium by isolated diatom algae (Asterionella formosa and Diatoma vulgare) was lower than by total seston. The concentration factors (CFs) of 241Am for seston of the Yenisei River in our experiments were (2.8-6.9)·105; for diatoms - (1.5-4.2)·104. The CFs for aquatic plant Elodea canadensis were within the same order of magnitude as those for diatoms. Activity concentration and CFs of 241Am were nearly the same in experiments under dark and light conditions. This is indicative of an energy independent mechanism of americium uptake from the water by diatoms and submerged macrophytes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Radioactivity - Volume 101, Issue 2, February 2010, Pages 148-152
Journal: Journal of Environmental Radioactivity - Volume 101, Issue 2, February 2010, Pages 148-152
نویسندگان
T.A. Zotina, A.Ya. Bolsunovsky, L.G. Bondareva,