Activity concentrations of 210Po in the soft parts of cockle (Anadara granosa)at Kuala Selangor, Malaysia |
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| Authors: | Tee Lee Theng Zaharuddin Ahmad Che Abd Rahim Mohamed |
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| Institution: | (1) Marine Science Program, School of Environmental Science and Natural Resources, Faculty Science and Technology, National University of Malaysia, 43600 Bangi, Selangor, Malaysia;(2) Malaysian Institute of Nuclear Technology Research (MINT), 43000 Bangi, Selangor, Malaysia |
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| Abstract: | Polonium-210 has been measured in the soft parts of Anadara granosa purchased at Kuala Selangor, West Coast of Malaysia in August 2001, April 2002 and September 2002. It is shown that 210Po is non-uniformly distributed within cockles of various sizes (i.e., 2.5, 3.0, 3.5 and 4.0 cm of shell length) and the concentration
of 210Po in the soft parts of cockle was significantly different (p<0.05) due to sampling date. The highest value was observed in the smallest cockle with a shell length of 2.5 cm (411.6±26.16
Bq/g dry wt.). It is clear that there is an allometric relationship between 210Po activity concentration and individual cockle weight. This may reflect on the differences of metabolic rate and growth age
of cockles. The mean activity concentration of 210Po measured in Kuala Selangor filtered water were 1.75±0.17, 0.79±0.08 and 1.13±0.20 Bq/kg for August 2001, April 2002 and
September 2002, respectively. The yield concentration factors for 210Po in the soft parts of cockles varies from 27.3. 103 to 106.9. 103.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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