ENSC-3717EL Lecture Notes - Lecture 5: Urban Neighbourhoods Of Sudbury, Northern Ontario, Lead
26 Mar 2017
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Both the human health risk assessment (hhra) and the ecological risk assessment (era) identified issues that required attention to either reduce risk . The hhra showed no unacceptable risks from any exposure to as, cu, co and se, and from dermal exposure to ni. Oral/dermal exposure to pb in some cois; Ni inhalation from copper cliff and the western part of sudbury centre. The hhra indicated that typical or average exposures to pb were within benchmarks for protection. When upper estimates were used, risks were found for young children in four of the areas under study. Household dusts: historical use of lead-based paints and other customer products, gasoline and other consumer goods; Also: isotopic analyses of lead in the sudbury area and northern ontario can be explained by a mixing of local emissions and remote sources. The latter sources are likely transboundary emissions from power plants, transported with prevailing winds. (akerman,
