| Autor: |
Vorapot Permnamthip, Kanitha Srisuksawad, Boonsom Porntepkasemsan |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Advanced Materials Research. :624-628 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.931-932.624 |
| Popis: |
Levels of 210Po in mussel (Perna viridis) collected from green mussel farming area at the Samut Sakhon province during the period of 2012 are presented. Parameters including total tissues wet weight and dry weight, maximum length, and the physiological performance of mussels using Condition Index were measured. The type of fluctuations observed with 210Po concentrations are interpreted as a seasonal effect which peaks of high concentrations in wet season and low concentrations in dry season. Analysis of 210Po activities in mussel (activity per individual) revealed the lower activities in smaller sized mussels (2.0-2.5 cm) and the higher in the larger sized group (6.5-7.0 cm). In the contrary, 210Po concentrations decreased with increasing shell length, or with increasing body size. The 210Po body burdens (activity per mussel) varied from 2.413 to 17.183 mBq while the 210Po concentrations were ranged from 2.511 to 4.474 Bq.Kg-1 ww. The results indicated that larger mussels were transfer lower 210Po concentrations to consumer on a weight basis. It is concluded that the apparent seasonal fluctuation of radionuclide concentration were mostly caused by mussel body size fluctuation and not by radionuclide body burden fluctuation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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