Abstract：
:The Don River Estuary-Azov Sea system is an extension of the shallow continental shelf area of the Black Sea. A large data set of artificial radionuclides in bottom sediments of the Azov Sea has been compiled in order to examine the storage and migration of radionuclides within this highly restricted inland sea and to estimate the annual dose received by individuals in the local population who regularly consume fish. In recent years (1997-1999), the radionuclide content of surface sediments has been: 137Cs < or = 0.5-100 Bq/kg d.w. (mean = 33.8 +/- 25.9 Bq/kg d.w., n = 57), 90Sr = 0.2-5.7 Bq/kg d.w. (mean = 2.1 +/- 1.4 Bq/kg d.w., n = 34) and 239,240Pu = 0.31-0.51 Bq/kg d.w. (n = 2). In general, 137Cs activities increase with distance from the mouth of the Don River and correlate negatively with sediment grain size (r2 = 0.77, n = 21). The annual 137Cs-derived dose received by an individual through the trophic chain water-fish-humans (approximately 10(-6) Sv/yr) is well below regulatory recommended limits, indicating that current levels of radioactivity in the environment pose no threat to commercial fisheries operations for the bordering nations of Russia and Ukraine.
journal_name
J Environ Radioactjournal_title
Journal of environmental radioactivityauthors
Matishov GG,Matishov DG,Namjatov AA,Carroll J,Dahle Sdoi
10.1016/s0265-931x(01)00081-9subject
Has Abstractpub_date
2002-01-01 00:00:00pages
309-27issue
3eissn
0265-931Xissn
1879-1700pii
S0265-931X(01)00081-9journal_volume
59pub_type
杂志文章abstract：:The water-to-organism (whole body) concentration ratio (CR(wo-water)), which is defined as the ratio of the concentration of a radionuclide in the biota (Bq kg(-1) fresh weight) to that in water (Bq L(-1)), has been used in mathematical models for environmental radiation protection. In the present paper, published glo...
journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
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journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
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journal_title：Journal of environmental radioactivity
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doi：10.1016/j.jenvrad.2004.01.041
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2012.12.007
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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journal_title：Journal of environmental radioactivity
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abstract：:The effects of exposure to synthetic groundwater at elevated temperature gradients on the sorption properties of bentonite were investigated using the Mock-Up-Cz experiment. This experiment simulated the vertical placement of a container of radioactive waste according to the Swedish KBS-3 system for a period of more t...
journal_title：Journal of environmental radioactivity
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abstract：:The dispersion of 222Rn from the planned remediation of the Ranger U mine in the wet-dry tropics of Northern Australia was modelled. Dry and wet season contour maps of 222Rn dose normalised to 226Ra activity concentration in the proposed waste rock substrate on the remediated landform were developed. Three example exp...
journal_title：Journal of environmental radioactivity
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