Site Archives PCB

Atmospheric deposition of POPS to Georgia Basin


Marie Noel
PCBs are transported through the atmosphere in both gas and particulate phases.  In Great Lakes and Baltic Sea, the majority of aquatic PCBs come from atmospheric transport.  Transport from Asia to BC takes 2-10 days.  One sampling site at Ucluelet as reference for Saturna Island samples (gas (86% of PCBs, 63% PBDEs), particulate (porportionally [...]

PCB bioaccumulation model for Puget Sound


Jeff Stern
Mapping C flow through the food web can help us understand trophic strucure and species interactions and ass feeding guilds and which species may be most at risk from bioaccumulation.  Our model is a steady state partitioning (Arnot and Gobas, 2004; Condon, 2007) that uses Tim Essingtons trophic structure data, diet data from John [...]

Long-term PCB fate and bioaccumulation


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long-term fate and bioaccumulation of PCBs in Puget Sound,
Models of contaminant kinetics:

Davis 2004 includes an active 10cm layer in Puget Sound
Field data: In Puget Sound 1400kg PCBs (estimates range from 600-3500) are in active layer compared with ~7kg in water and ~40kg in biota (estimated from Sandy’s measurments)
[PCB] in water: measured mean ~60-100 ng/gD.
Model says [...]

Persistent organic pollutants in killer whales


Persistent organic pollutants as chemical tracers for Puget Sound marine biota, Gina Ylitalo
Chemical tracers can be used to determine geographic ranges.  Persistent organic pollutants (POPs) like PCBs and PDBEs in Salish Sea herring (3 yr old males collected ‘99 and ‘04) showed elevated levels in Puget Sound relative to Georgia Strait, though difference was small [...]