According to the study, published in the journal Proceedings of the National Academy of Sciences, the chill of the early 50′s forced to burn more coal to keep the heating systems in operation and fumes from factories, vehicles and homes built up over the city in the absence of wind, causing the Great Fog.
The phenomenon began on 5 December and dissipated on the 9th causing 12 thousand deaths and more than 150 thousand hospitalized. After these events, the british Parliament passed the Clean Air Act of 1956.
according To the experts, the sulfate was a large contributor and thus, formed particles of sulfuric acid from sulfur dioxide released by the burning of coal for residential use and power plants.
on the other hand, the mist natural contained larger particles of several tens of micrometers in size. Then, the evaporation later left other smaller acids that covered the city.
The research shows that something similar occurs frequently in China, a country that has 16 of the 20 most polluted cities in the world, despite their efforts against the pollution.
The Environmental Protection Agency of the united States stated that Beijing surpasses often the acceptable standards of air established.
In the asian country the sulphur dioxide is emitted mainly by power plants, the nitrogen dioxide comes from power plants and automobiles, and ammonia comes from the use of fertilizers and automobiles, explained the authors of the inquiry.
While the fog of London was highly acidic, contemporary china is basically neutral, they say.
ymr/cdg
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