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“Rather than being a permanent sink for nitrogen oxide gases, grime exposed to sunlight can re-release some of these gases back into the urban atmosphere,” Donaldson explained at an American. MONDAY, Aug. 17, 2015 (HealthDay News)—Sunlight causes grime on city buildings, statues and other outdoor surfaces to release chemicals that create smog, according to a new study. City grime is a mixture of thousands of chemicals—including nitrogen oxides—emitted into the air by vehicle.
Some of Prof Donaldson’s previous work had already shown that in a laboratory, artificial sunlight can strip the nitrogen component from grime which is essentially a cocktail of chemicals belched. MONDAY, Aug. 17, 2015 (HealthDay News) Sunlight causes grime on city buildings, statues and other outdoor surfaces to release chemicals that create smog, according to a new study. City grime is a mixture of thousands of chemicals including nitrogen oxides emitted into the air by vehicles, factories and other. But there’s still plenty of grime.
Combustion from cars, factories and fires spews out nitrogen oxides. Those compounds react with sunlight and air to form ozone—the main ingredient in smog. And. When urban grime is zapped by sunlight, it may activate and release harmful components back into the air, making it more polluted than we originally thought. James Donaldson, a physical chemist.
City dirt releases toxic nitrogen oxide compounds when illuminated by the Sun, increasing air pollution levels in urban areas, a new study has revealed. The study conducted by researchers from the University of Toronto is the first of its kind, looking at the grime covering buildings, statues and outdoor surfaces in cities as a potential source of the toxic pollution. BOSTON, Aug.17, 2015 — In a first-of-its-kind study, researchers have determined that natural sunlight triggers the release of smog-forming nitrogen oxide compounds from the grime that typically coats buildings, statues and other outdoor surfaces in urban areas.
There have been a lot of worrisome reports recently about the health effects of sunscreens with chemical ingredients such as oxybenzone and avobenzone, substances shown to protect skin from the. A. Dearest Michaelann, Call me crazy, but I don’t hate cleaning. There’s something so satisfying about putting one’s home in shiny, grime-free order — like feng shui on the scale of dust.
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