The workshop evaluated ongoing research on bioavailability of chlorinated dioxins and related chemicals, to identify research needs for development of a research plan. Three areas were evaluated: (1) Environmental processes in bioavailability which treated photochemical processes, physical and chemical properties, sorption/desorption/volatilization, chemical transformations biological processes, intermedia transport, exposture modeling, surrogate parameters for combustion and the need for laboratory-standard supplies of TCDD for research. (2) Bioavailability in ecosystems which considered identification of ecosystem processes that (a) are involved in routes, rates, and reservoirs of dioxins in aquatic and terrestrial ecosystems, (b) are particularly susceptable to dioxin contamination, and (c) maybe involved in biological decontamination processes. Also considered were identification of species and communities impacted or threatened by dioxins; identification of the role of food chains/webs in human exposure and risk.

"January 1986."