Title: Study on bioconcentration of 147 Pm (RE) in aquatic food chain
Abstract: Bioconcentration and magnification properties of 147Pm (RE) on fish in the aquatic food chain are studied by aquatic ecosystem model. The results showed that: (1) The materials for study includeds the 5 aquatics, azolla (wolffia ar-rhiza and lemnaminor), limnodrilus, carassius auyatus, ctenopharyngolon idel-lus and Basilewsky, and have apparent concentrating capabilities in each aquatic food chain. The bioconcentration factors (BCF) increased with the feed time. The greatest BCFs are as follows: azolla (wolffia arrhiza and lem-naminor) 1115.4, ctenopharynagolon idellus 440, limnodrilus 182.5, carassius auratus 26. 3 and Basilewsky 4. 7. (2) The BCFs of the latter stage aquatics are smaller than those of the former stage aquatics in each aquatic food chain, showing that 147Pm does not have biological magnification. (3) The relative ratios (%) of specific radioactivity (Bq/g) of each organization of Basilewsky (after 30 d treatment) are as follows: vissera (48. 95%) gill (20. 03%) fin (6. 21%) skeleton (5. 08%) skin (4. 89%) skull (4. 58%) muscle and egg mass (each 4. 17%) eye (1. 92% ) , indicating that the 147Pm does not distribute evenly in fish.
Publication Year: 1998
Publication Date: 1998-01-01
Language: en
Type: article
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