2022 Early Hearing Detection & Intervention Virtual Conference

March 13 - 15, 2022

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5/23/2018 | 9:45 AM - 10:00 AM | ACCUMULATION OF HEAVY METALS IN CORBICULID CLAMS FROM THE MEKONG AND RED RIVER DELTAS (VIETNAM) | 410 B

ACCUMULATION OF HEAVY METALS IN CORBICULID CLAMS FROM THE MEKONG AND RED RIVER DELTAS (VIETNAM)

Examined the bioaccumulation of Zn, Cd, Cu, Ni, Mn, Fe, Pb, As in Corbicula sp. in the Mekong Delta and the Lower Red River for the scientific database records to use in the future for biomonitoring of Vietnam aquatic ecosystems. We estimated trace metal concentrations in corbiculids collected from 10 sites in April and September of 2017. Results revealed rather high levels of the most dangerous metals Pb, Cd and As in tissues of Corbicula sp. from number of sites. Bioaccumulation of Zn, Cu, Ni, Mn, Fe were estimated as insignificant. Concentrations of Cu in Corbicula were similar in both basins. The levels of the other elements were higher in Corbicula sp. from the Northern Delta, double of the amount in the Mekong Delta for (Zn, Ni), 3-7 times for (Mn, Ni, Fe, Cd) and even more than 10 times for (Pb). All detected metal concentrations, excluding As, were below the maximum permissible limits for hazardous substances in fish and fish related products by recommendation of FAO.

Assessment
Climate Change
Pollution

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Presenters/Authors

Viktor Bogatov (), Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch Russian Academy of Science, vibogatov@mail.ru;