The ubiquity and refractory nature of certain organic compounds, such as chlorinated pesticides and polychlorinated biphenyls (PCB's), results in their accumulation in aquatic sediments (Holdrinet et al. 1978, Peck et al. 1980, Wang et al. 1979). Their continuous release from this reservoir through physico-chemical and biogenic processes to the overlying water column results in the accumulation of xenobiotic compounds in the food chain.
Roberts, Dale and Meier, Peter G.
"A New Method for Exposing Deposit Feeders to Contaminated Sediments for Food Chain Studies,"
The Great Lakes Entomologist: Vol. 15
, Article 10.
Available at: http://scholar.valpo.edu/tgle/vol15/iss1/10