Simmons, Bradley L.2005-07-182005-07-181993-08http://udspace.udel.edu/handle/19716/1389The Environmental Protection Agency (EPA) is currently developing sediment quality criteria (SQC) for contaminants that associate with both fresh and marine water sediments and are toxic to those sediment dwelling and sediment dependent organisms. One basis for establishing SQC uses equilibrium partitioning between the sediment and pore water phases in a sediment. This is a viable approach because it deals with varying bioavailability and toxicity affects of chemicals in sediments (Di Toro, 1991). It is known that the aqueous free metal (Cd2+, Cu2*, etc.) is the bioavailable species for heavy metals.3316034 bytesapplication/pdfen-UStoxicityheavy metalsacid volatile sulfideswetland environmentsThesis