BEIJING — Clouds of smoke from Lunar New Year fireworks sent air pollution readings soaring in the more sensitive measurement system Beijing started using a little more than a week ago, reports said Sunday.
Readings of fine particulate matter called PM2.5 reached 1.593 milligrams per cubic meter on the Jan. 22 eve of the holiday, about 100 times worse than the amount considered good for 24-hour exposure, the city’s environmental bureau said.
…Beijing is frequently cloaked in yellow haze that obscures buildings a couple of blocks away. On particularly bad days, schools cancel outdoor activities and hospitals treat more people — particularly the elderly — for respiratory complaints.
Read more: http://www.ctv.ca/CTVNews/SciTech/20120129/beijing-new-year-fireworks-air-pollution-effect-120129/#ixzz1mBF1MyIQ