Distribution and annual committed effective dose assessment of 210Po in popular marine species at the near-shore Binh Thuan province, Vietnam
Thanh-Nam Nguyena,b, Thanh-Duong Nguyenc, Van-Hao Duongc,*, Tai-Tue Nguyend,e
aFaculty of Biology, University of Science, Vietnam National University, Hanoi 100000, Viet Nam
bCenter for Life Science Research (CELIFE), University of Science, Vietnam National University, Hanoi 100000, VN
cHanoi University of Mining and Geology (HUMG), Hanoi 100000, Viet Nam
dKey Laboratory of Geoenvironment and Climate Change Response, University of Science, Vietnam National University, Hanoi 100000, Viet Nam
eFaculty of Geology, University of Science, Vietnam National University, Hanoi 100000, Viet Nam
210Po concentration in thirty popular marine species (twenty five fishes, four bivalves and one crab) with different habitats, feeding types, and trophic levels at the near-shore Binh Thuan, Vietnam was analyzed using the alpha detectors. The 210Po activities were widely ranged from 3.07 ± 0.18 in a fish species (Bumpnose trevally) to 78.6 ±5.3 Bq/kg w.w in a bivalve species (Green mussel) with the average value of 16.6 Bq/kg w.w. The results showed that the species with lower trophic level value have higher 210Po concentration. Regarding the feeding types, the 210Po concentration in the omnivorous species is about 2.9 times higher than in the carnivorous species. The species living in demersal zone accumulated a high 210Po in comparison with species living in reef-associated and pelagic-neritic zones. The calculated annual committed effective dose from 210Po due to the ingestion of seafood from demersal zone and bivalve species of the area was significant high.