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Beijing kicks off PM2.5 measure of air quality

01-21-2012 13:34 BJT

BEIJING, Jan. 21 (Xinhua) -- Beijing's environment authority on Saturday launched the much-anticipated PM2.5 measure of air quality, fulfilling its promise of publishing the data ahead of the Spring Festival holiday, which starts on Sunday.

A working staff of the Beijing Environment Protection Monitoring Center checks
the monitoring data for the PM2.5 measure of air quality in Beijing, capital of
China, Jan. 7, 2012. Beijing's environment authority on Jan. 21, 2012 released
the PM2.5 measure of air quality, which is considered stricter than its previous
standard of PM10. Particles 2.5 microns or less in diameter (PM2.5) are referred
to as "fine" particles and are believed to pose greater health risks than larger
particles because they can embed deep in people's lungs. (Xinhua/Gong Lei)

The Beijing Environment Protection Monitoring Center said its monitoring station at the city's second ring road had detected 0.003 micrograms per cubic meter, suggesting the air quality is good.

The PM2.5 gauge is considered stricter than Beijing's previous standard of PM10, as it monitors "fine" particles 2.5 microns or less in diameter.

A fierce online public debate on PM2.5 and PM10 began at the end of 2011 when it came to light that air-quality monitoring results released by Beijing's weather forecast station and the U.S. Embassy in Beijing often differed.

On Sunday, the embassy's air-quality rating also suggested the air is "good."


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