(Table 1) Speciation of metals in bottom sediments of Core DM49-4397-2 from the Kara Sea@en

Element contents for dry sediment matter are shown. Adsorbed fraction - leached with acetate buffer (pH 4.8) Fraction combined with amorphous Fe-hydroxides and Mn-oxyhydroxides - leached according to Chester and Hughes (1967; doi:10.1016/0009-2541(67)90025-3) Fraction combined with organic matter and sulfides - leached according to Kitano and Fujiyoshi (1980; http://www.terrapub.co.jp/journals/GJ/pdf/1403/14030113.PDF)