Abstract

Bach Dang estuary (Hai Phong City) is one of the developed economic centers of Hai Phong city with abundance of natural resources. At the Bach Dang estuary, waste sources of mercury compounds discharge from the industrial sources, transportation sources, port, agricultural sources and living sources. Two forms of mercury: total mercury and methyl mercury in the water at the Bach Dang estuary are lower than the allowable limit. Bioaccumulation factor (BAF) of total mercury in hard clam Meretrix lyrata is 307 and that one of methyl mercury is 165,000.

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