Study: Urban grime releases NOx when exposed to sunlight

Green Car Congress
By mmillikinAug 17, 2015, 10:49 am35 pts
Researchers at the University of Toronto have found that natural sunlight triggers the release of smog-forming NOx compounds from the grime that typically coats buildings, statues and other outdoor surfaces in urban areas. The finding confirms previous laboratory work using simulated sunlight and upends the…

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