Gross beta and alpha activities in the selected commercial freshwater fish species in Vietnam

Duong, Van-Hao; Chu, Tien-Trung; Nguyen, Thanh-Nam; Le, Cuong Dinh; Pham, Luan Thanh; Duong, Duc-Thang; Nguyễn, Huyền Trang; Nguyen, Quan Tien; Yaseen, Muhammad; Musthafa, Mohamed Saiyad

Gross beta and alpha activities in the selected commercial freshwater fish species in Vietnam

2022

The baseline data of radioactivity levels in food is one of the main factors for the assessment of resident’s health risk. Gross beta and alpha activity was identified for selected commercial freshwater fish species, including 29 types of fish species by a gas-flow proportional detector. The samples were collected from wholesale markets in Hanoi city, Vietnam. The highest gross alpha activity was recorded in blotched snakehead, a pelagic and carnivorous species, and the lowest one was recorded in common carp, a demersal and omnivorous species. Meanwhile, the gross beta activity was much higher than the gross alpha activity with the highest value of gross beta, observed in Wels catfish, a demersal and carnivorous species, and the lowest one found in Mudskipper a demersal, herbivores species. Regarding feeding types, the gross alpha activity was observed in the order of Alcₐᵣₙᵢᵥₒᵣₑₛ > Alₒₘₙᵢᵥₒᵣₑₛ > Alₕₑᵣbᵢᵥₒᵣₑₛ whereas the gross beta was non-distinction. In terms of living behavior, the gross alpha activity in pelagic species was much higher than that in demersal species (Alₚₑₗₐgᵢc > > Aldₑₘₑᵣₛₐₗ) and indifferent for gross beta. There was an insignificant relationship between the trophic level with gross beta and alpha activities in freshwater fish species. The calculated annual effective dose ranged from 0.19 to 1.88 and 0.78 mSv.y⁻¹ on average, being within the limited dose for the public as reported by UNSCEAR in which gross beta activity has a strong correlation with the total annual effective dose.

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