Polychlorinated biphenyls in coastal marine zooplankton: bioaccumulation by equilibrium partitioning

Bioaccumulation of 14C-PCB 101 and 14C-PBDE 99 in the marine planktonic copepod Calanus finmarchicus under different food regimes

“…BAF is expressed as the ratio of the chemical concentration in biota to the concentration in water. Chemical concentrations in copepods and algae were normalised to the lipid weight of the organisms since this is the fraction with highest affinity for HOC (Clayton et al, 1977;Mackay and Fraser, 2000). For the algae BAFs based on organic carbon normalisation were also calculated and compared with the lipid normalised ones.…”

Influence of Lipid Composition in Amplifying or Ameliorating Toxicant Effects on Phytoplankton.

“…Accumulation of hydrophobic compounds appears to be related to lipid content (Canton et al 1977;Clayton et al 1977;Boyles 1980;Hutchinson et al 1980). While lipid content may have an overall effect on bioaccumulation and food web transfer (indirect ecosystem effects), our results suggest that lipid class composition at the time of exposure may alter the short-term direct effects of the toxicant on individual phytoplankton taxa.…”

Partition of Nonionic Organic Compounds in Aquatic Systems

“…In addition, no systematic difference exists between the four species of aquatic organisms, despite the fact that the BCF 1 data were collected from both field (Clayton et aI., 1977;Pereira et aI., 1988) and laboratory studies (Konemann and van Leeuwen, 1980;Oliver and Niimi, 1983) and represent four different aquatic organisms from two trophic levels. It is interesting to note that while the data from Konemann and van Leeuwen (1980) and Oliver and Niimi (1983) were collected from a freshwater environment, the data from Clayton et al (1977) were collected from a marine environment and the data from Pereira et ai. (1988) were collected from an estuarine environment.…”