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Source of Main Pollutants in the Atmosphere

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Sulfur dioxide: Coal, petroleum and petroleum products often contains sulfur compounds, and their combustion generates sulfur dioxide

Volatile organic compounds: mainly originated from automobiles, industrial production and civilian use, burning of all types of fuels, storage and transportation of oils, fitment finish, coating for furniture and machines, cooking oil fume and fine particles (PM 2.5), etc.

Nitric oxides: mainly originated from combustion of coal, petroleum and petroleum products, natural gas and other fuels

Ozone: under the sun shine, volatile organic compounds and nitric oxides can generate secondary pollutants-ozone

Source: eBeijing.gov.cn
Date: 2017-09-04