Forest fire particles come to town
Researchers at the University of Toronto have detected migratory pollutants from a forest fire in Quebec and even particles from a sandstorm in the Sahara in Toronto air, findings that could someday give regulatory agencies an idea of who is contributing to the pollutants found in urban air.
"Its a bit of detective work," says Greg Evans, a professor in the Department of Chemical Engineering and Applied Chemistry. "We happened to know when that forest fire was happening in Quebec and we realized that this mixture of different particles that we found in downtown Toronto is a signature for a forest fire." With the dust particles from the Sahara, the researchers recognized sand-like particles and were ultimately able to track their trajectory from the desert, across the Atlantic Ocean to Mexico, then north through the United States to Toronto.
Greg Evans | EurekAlert!
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