Title of article :
A study of polonium-210 distribution aspects in the riverine ecosystem of Kaveri, Tiruchirappalli, India Original Research Article
Author/Authors :
K. Shaheed، نويسنده , , S. S. N. Somasundaram، نويسنده , , P. Shahul Hameed، نويسنده , , M. A. R. Iyengar، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1997
Pages :
7
From page :
371
To page :
377
Abstract :
Distribution of a natural radionuclide (210Po) in water, sediment and biota was quantified along a 95 km reach of the Kaveri River, India. It is observed that the soft tissues of animals concentrated a higher level of 210Po than the hard parts like shell and bone. The ranges of 210Po activity in biological samples were 2.32–10.78 Bq kg−1 wet (aquatic weeds), 18.94–28.55 Bq kg−1 wet (plankton), 32.51 to 46.17 Bq kg−1 wet (snail), 57.42 to 105.78 Bq kg−1 wet (bivalve), 12.13 to 19.10 Bq kg−1 wet (prawn) and 1.86 to 4.17 Bq kg−1 wet (fish). The concentration factors (CFs) for the aquatic organisms ranged from 103 to 104, indicating a high affinity of 210Po for organic moieties. The bivalve mollusc, Lamellidens marginalis, accumulated higher concentrations of 210Po, suggesting that it could serve as a biomonitor of 210Po radionuclide in riverine systems. Further, the levels of 210Po in water, sediment and biological samples from impoundments were higher than those from stations located in the open river. This may be largely due to aerial inputs of the radionuclide, accumulation of radionucliderich silt and organic matter, and increased biological production in the impounded water body.
Keywords :
biological indicator , Natural radionuclide , KaveriRiver , Polonium-210 , impoundments
Journal title :
ENVIRONMENTAL POLLUTION
Serial Year :
1997
Journal title :
ENVIRONMENTAL POLLUTION
Record number :
729129
Link To Document :
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