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Effects of air quality indicators

sulphur dioxide (SO2), nitrogen dioxide (NO2), respirable particulate (IP) level, which is determined according to the national situation and existing skills.  

sulfur dioxide is a common pollutants in the city, mainly affecting the respiratory tract, and aggravate existing respiratory diseases, asthma, cough and other symptoms.

respirable particulate matter, as the body to breathe deep into the lungs, produce toxic effects

of particular concern: nitrogen dioxide have an intense irritation and corrosive effects on lung tissue, causing pulmonary edema.

air quality, is divided into five grades: excellent, good, moderate and heavy pollution, light pollution

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