CS13 Environmental Ecotoxicology
Date: Friday, June 14, 2002
Time: 8:45:00 AM
Location: Esquimalt
 
Playle, Richard, Wilfrid Laurier University, Biology, Waterloo, Ontario, , rplayle@wlu.ca
Schwartz, M, , Wilfrid Laurier University, Biology, Waterloo, Ontario, , 
Heinrichs, M, , Wilfrid Laurier University, Biology, Waterloo, Ontario, , 
Nichols, J, , Wilfrid Laurier University, Biology, Waterloo, Ontario, , 
Crusius, J, , Lorax Environmental Services, Vancouver, B.C., , 
Luider, C, , Okanagan University College, Science, Kelowna, B.C., , 
Curtis, J, , Okanagan University College, Science, Kelowna, B.C., , 
 
Influence of natural organic matter source and quality on metal interactions with fish
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Natural organic matter (NOM) was collected by reverse osmosis from locations across Canada. Sources included wetlands, streams, lakes, and a constructed wetland for polishing sewage effluent. NOM varied by optical qualities (e.g., specific absorption coefficients, excitation-emission scans) and by metal binding characteristics (e.g., copper ion selective electrode titrations). Darker, aromatic, more allochthonous NOM binds metals like copper and lead (but not cadmium) better than lighter, less aromatic, more authochthonous-like NOM, as indicated by metal accumulation by gills of rainbow trout and by metal toxicity to trout. NOM quantity and quality should be included in regulations for metals in the aquatic environment.