Gridded air quality monitoring micro-station

At present the characteristic of the air pollution in our country has changed from coal-smoke type pollution to compound pollution. According to the materials released by the Ministry of Environmental Protection, there has been no fundamental change in China's coal-based energy structure, coal-smoke pollution has been the main type of pollution for a long time, and the problem of sulfur dioxide inhalable particulate matter pollution in urban atmosphere has not been solved. At the same time, the number of motor vehicles continues to increase, exhaust pollution is becoming more serious, gray haze, photochemical smog, acid rain and other complex air pollutants are increasingly prominent. Among them, ozone, inhalable particulate matter, sulfur dioxide, nitrogen oxides, and volatile organic compounds are the main pollutants in the atmosphere. Studies have shown that photochemical smog, high concentrations of ozone, nitrogen oxide pollution and so on gradually appear in the Beijing-Tianjin-Hebei, Pearl River Delta and Yangtze River Delta.