EN
Contents of selected heavy metals (Al, Fe, Co, Ni, Cd, Pb, Zn, Cu, Cr) were meas-ured in sediment samples and biota collected off Spitsbergen. Relatively large contents of met-als in sediments were accompanied by small contents in mussels. This was attributed to the fact that sediments contain a significant amount of minerals rich in heavy metals of low bioavail-ability. Solid speciation revealed that metals incorporated into mineral lattice were by far more abundant than those adsorbed, bound to carbonates and hydroxides, and complexed to organic matter. This also explains scarce bioavailability of metals in the Spitsbergen region.