Trace Contaminant Concentrations in the Kara Sea and its Adjacent Rivers, Russia

摘要

Trace organic (chlorinated pesticides PCBs, PAHs and dioxins/furans) and trace metal concentration were measured in surficial sediments and biological tissues (i.e., worms, crustaceans, bivalve molluscs, and fish livers) collected from the Russian Arctic. Total DDT, chlordane, PCB and PAH concentrations ranged from ND to 1.2, ND to <0.1, ND to 1.5 and <20-810 ng g~1, respectively, In a suite of 40 surficial sediment samples form the Kara Sea and the adjacent Ob and Yenisey Rivers. High sedi- Mentary concentrations of contaminants were found in the Lower part of the Yenisey River below the salt wedge.