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7409442 
Journal Article 
Annual loadings of toxic contaminants in urban runoff from the Canadian Great Lakes Basin 
Marsalek, J; Schroeter, H 
1988 
23 
3 
360-378 
English 
BIOSIS COPYRIGHT: BIOL ABS. Frequencies of detection, concentrations and annual loadings of 50 selected toxic chemicals have been studied in urban runoff from the Canadian Great Lakes Basin. The mean concentrations of these chemicals in stormwater and street sediment were determined in a field program conducted in 12 urban centres in the study area. Using these mean concentrations and the computed run off volumes and sediment yields, annual loadings of toxic chemicals in urban runoff from the study area were estimated within an order of magnitude. The highest basin loadings were computed for zinc (300 t/yr), lead (100 t/yr), and some other inorganics. Among organic substances, the highest individual loadings were computed for several polynuclear aromatic hydrocarbons (e.g., fluoranthene - 200 dichlorobenzene - 30 kg/yr), followed by PCBs (80 kg/yr), some chlorinated benzenes (1,2-dichlorobenzene - 30 kg/yr), and organochlorine pesticides (alpha-BHC - 12 kg/yr). Such loadings do not include possible 
ECOLOGY; OCEANOGRAPHY; FRESH WATER; BIOCHEMISTRY/METHODS; BIOCHEMISTRY; ENVIRONMENTAL POLLUTANTS/POISONING; OCCUPATIONAL DISEASES; AIR POLLUTION; SOIL POLLUTANTS; WATER POLLUTION; HERBICIDES; PEST CONTROL; PESTICIDES; Biochemical Methods-General; Biochemical Studies-General; Toxicology-Environmental and Industrial Toxicology; Public Health: Environmental Health-Air; Soil Science-Physics and Chemistry (1970- ); 33213-65-9; 7782-49-2; 7440-66-6; 7440-50-8; 7440-48-4; 7440-47-3; 7440-43-9; 7440-38-2; 7440-02-0; 7439-97-6; 7439-92-1; 5566-34-7; 5103-71-9; 2385-85-5; 1024-57-3; 959-98-8; 634-90-2; 634-66-2; 608-93-5; 541-73-1; 319-84-6; 309-00-2; 208-96-8; 206-44-0; 129-00-0; 120-82-1; 119-64-2; 118-74-1; 108-70-3; 106-46-7; 95-94-3; 95-50-1; 95-13-6; 91-58-7; 91-57-6; 91-22-5; 90-12-0; 87-61-6; 86-73-7; 85-01-8; 83-32-9; 76-44-8; 72-55-9; 72-54-8; 72-43-5; 72-20-8; 60-57-1; 58-89-9; 50-29-3