%0 Journal Article %T Biogeochemical monitoring of composition of chemical elements in Caspian Sea %A Nevalennyy, A.. %A Ershova, T.. %A Zaitsev, V.. %A Chaplygin, V.. %K heavy metals, biogeochemical monitoring, Caspian Sea, crustaceans, mollusks, fish, Caspian seal %J Vestnik of Astrakhan State Technical University. Series: Fishing industry %D 2022 %N 2022 %P 6 %I Astrakhan State Technical University