The cause of smog has always been a topic of heated discussion. There is currently no clear statement about the main sources of PM2.5 pollution. There is also a lack of official authoritative scientific explanations for the frequent appearance of smog, but there is one thing that should not be overlooked. Water vapor effects on haze.
The haze is the result of the combined effect of air pollution and meteorological factors. When haze weather occurs, the humidity is relatively low, the wind speed is high, the weather is relatively good, the humidity is high, the wind speed is small, and the haze is serious. The reason for the influence of water vapor on smog is that, in addition to the extinction effect of PM2.5, water vapor also has an extinction effect. So when the humidity is high, visibility will be lower. In addition, the water vapor makes each of the particles outside the water layer of the bread too large, so the increase in the weight of the particles, resulting in high data measured by PM2.5, but also exacerbated by exacerbations, resulting in increased ash pollution.
Wind is a key factor affecting horizontal horizontal movement of PM2.5/PM10. Water vapor (precipitable water) is a factor that affects the vertical movement of PM2.5/PM10. The increase of water vapor can promote the oxidation of sulfur dioxide and nitrogen oxides into SOA (SOA refers to the secondary pollution of particles produced by the direct emission of pollutants and the reaction of atmospheric substances), thereby increasing the concentration of PM2.5/PM10. When the water vapor rises, ozone reacts with organic matter to generate a large amount of microparticles, which belong to PM2.5/PM10. Therefore, when the water vapor rises, the ozone concentration decreases and the PM2.5/PM10 concentration increases. In general, the change of wind speed is negatively correlated with the change of PM2.5/PM10 mass concentration. There was a significant positive correlation between water vapor changes and PM2.5/PM10 mass concentration changes, and the correlation between water vapor and PM2.5/PM10 mass concentration changes was more significant when the wind speed was small. Waste gas treatment equipment
The smog problem is a problem that everyone is paying special attention to. At present, we do not see clear ideas and measures to solve the haze problem. There are changes in the environment and our lives must also change. We cannot use environmental resources in exchange for the development of GDP. The war of crickets cannot be rushed. It needs regular governance, advocates green life, and constructs ecological China.
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Squaric Acid Photosensitive Intermediate
Squaric Acid, CAS NO. 162101-31-7,Molecular formula: C7H8BFO3,CAS No. 61699-62-5,Molecular formula: C10H14O4
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