Abstract
Ecological standards for commercial seaweeds are very important due to anthropogenic pollution of the marine sublittoral. The content of heavy metals in agarophyte red algae, seawater, and sediments are investigated by the method of atomic absorption spectroscopy. The level of Cd, Pb, and Ni in Gracilaria verrucosa was low, while the level of Zn, Pb, and Nu was comparatively higher in Gelidium latifolium and Phyllophora nervosa, especially in the Caucasus nearshore zone. There is no relationship between the concentration of metals in the environment and the concentration of metals in agarophytes. Background levels of dangerous metals are discussed in connection with commercial exploitation of red algae.
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