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Essay on Air Pollution Sources Types and Effects
According to the World Bank, the Chinese cities with the highest levels of in 2004 of those studied were , , and . In 2012 stricter air pollution monitoring of ozone and PM2.5 were ordered to be gradually implemented from large cities and key areas to all , and from 2015 all or higher cities were included. State media acknowledged the role of environmental campaigners in causing this change. On one micro-blog service, more than a million mostly positive comments were posted in less than 24 hours although some wondered if the standards would be effectively enforced.
pollution essay in english essay on pollution in english soil
Particulates are formed from both primary and secondary pathways. Primary sources such as , biomass combustion and traffic directly emits also known as "PM". Whereas, high secondary aerosol (particulates formed through atmospheric oxidation and reactions of gaseous organic compounds) contribution to particulate pollution in China is found. According to the U.S. Environmental Protection Agency, such fine particles can cause asthma, bronchitis, and acute and chronic respiratory symptoms such as shortness of breath and painful breathing, and may also lead to premature death.