A trio of recently published studies from a team of University of Toronto engineers has found that air pollution could be spreading up to three times farther than thought – contributing to varying levels of air quality across cities.
Past research on air pollution from vehicle tailpipes has shown poor air quality anywhere between 100 to 250 metres of major roadways.
But in a paper published in the recent edition of the journal Atmospheric Pollution Research, U of T chemical engineer Prof. Greg Evans and his partners at Environment Canada have found that concentrations of pollutants from traffic are still double at a distance of 280 metres downwind from highway 400 north of Toronto.
One in three Canadians, and half of all Torontonians, lives within 250 meters of at least one major roadway. These roads, says Evans, range from 10-lane highways to most four-lane streets with steady traffic. Read full story.
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