Primary pollutants produced by petrol-powered vehicles include carbon monoxide, nitric oxide, benzene, particulate matter and lead.
While everyones' arteries harden gradually with age, a team of researchers led by epidemiologist Sara Adar of the University of Michigan School of Public Health discovered that higher concentrations of fine particulate air pollution were linked to a faster thickening of the inner two layers of the carotid artery.
5 — tiny particulate matter that easily penetrates the lungs.
In 2014, the World Health Organization measured air quality levels in 1,600 cities around the world, and the Indian capital city of New Delhi was found to have the highest concentration of particulate matter smaller than 2.
5, or fine particulate matter, stood at 93 micrograms per cubic metre last year in the region covering Hebei and Beijing, the ministry said.
Dust and crumbs forming particulate frost in the corners?
It was in effect for much of the 1950-1980 period of central planning, and, though discontinued after 1980, it has left a legacy in the north of heavy coal burning, which releases particulate pollutants into the air that can harm human health.
5, which is particulate matter with a diameter of 2.
