PREFERENTIAL SORPTION OF PLANAR POLYCHLORINATED BIPHENYLS (PCBs) ON POLLUTED SEDIMENTS FROM THE HUDSON RIVER

摘要

Sorption to sediment is a key process because it controls the fate and ecotoxicoJogical risks of hydrophobic organic chemicals (HOCs) in aquatic environments. The organic matter (OM) in soils/sediments, the principal factor controlling sorption of HOCs, is regarded to be composed of two domains: amorphous OM such as humic/fulvic substances, lipoproteins and lignin and harder, more condensed moieties such as unbumed coal and black carbon. The later domain may play a dominant role in the sorption of HOCs.