环境化学英文课件18
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Haze is air pollution in which is mixed up with dust, smoke and other dry particles ,and it obscure the clarity of the sky and interacts with the natural environment.This kind of air pollutant come from a variety of natural and manmade sources. Natural sources can include windblown dust, and soot from wildfires. Manmade sources can include motor vehicles, and industrial fuel burning, and manufacturing operations. The one of the main cause that touches off haze is manufacturing operations. Many factories were over measure produced the smog that had over the standard and the smog seriously influence the air become air pollution.Since the development of the technology, the society gets modernized, people make use of the high technology to pursue more profit. Though the government has noticed the problem that people do to the environment, they still can’t prevent negative result that the polluted environment brings.Many years ago, the most prominent problem of the polluted environment is that the river and the water were changed their color, some fish even died for the polluted river. Now the situation becomes ever worse, lately, in the big city, like Beijing and Shanghai, people are annoyed by the bad weather. It is not the rainy day, but the haze around the sky, there is no way for people to run away for it. The haze contains toxic elements, people breathe it and hurt their bodies.The haze problem is the result of people’s pursuit for t he profit, what people did to the environment now has been paid back by the environment. Now people have realized the revenge from the nature is so huge, protecting the environment is the main task. No matter how bad the environment is, people still need to do something to fix their mistake.Haze will bring many hazards. The health impact of haze is dependent on one's health status (e.g. whether one has pre-existing chronic heart or lung disease), the PSI (Pollutant Standards Index) level, and the duration and intensity of outdoor activity. Reducing outdoor activities and physical exertion can help limit the ill effects from haze exposure. Persons who are not feeling well, especially the elderly and children, and those with chronic heart or lung conditions, should seek medical attention.As large areas of northern China experienced strong haze in recent days and Beijing issued its first ever red alert for air pollution, it is clear what needs to be done."I think it means that China is in the process of industrialization and urbanization, and we should transform our development patterns and adjust the economic, industrial and energy structures accordingly. There is a synergistic effect between solving the problems of haze and addressing the climate change," Xie Zhenhua said.Xie, who has been China's lead negotiator at the annual UN Climate Conference since 2009, stated that China will address the pollution issue on its own terms as part of the fight to combat climate change. "Therefore, Chinese President Xi Jinping pointed out that coping with the climate change and solving the environmental problems in China is not something that is imposed from outside, it is something that we need to do ourselves. By doing so, we will resolve our own problems and make a contribution to the world in terms of coping with global climate change as well," said Xie.To settle this problem, a series of measures should be taken as follows.First ,government should strengthen air monitor to lower the levels of small particulate pollutants and make some chemistry changes during the manufacturing process to reduce harmful emissions.Second, government should enact more strict laws and regulations and keep perfecting our current law on environmental protection to regulate people 's daily action and the industrial production and punish those factories that ignore the protection and keep emitting dangerous material that cause haze.Third, government should develop green and energy-saving energy to lower the emission of haze and improve air quality. As far as i am concerned ,if we work together to be able to do such measures ,our environment will getting better and better and haze weather will vanish completely.While thinking when is the haze going to leave us alone, let's pay attention to how to prevent it from affecting our health!In the first place, Drink more water and increase the intake of fresh fruits and vegetables. They help the body to flush out toxins absorbed through the skin and lungs, and improve the immune system. Taking moreanti-inflammatory fruits and vegetables also help to reduce inflammation that may be triggered by harmful fine particles in the air.Furthermore, Avoid outdoor activities, especially outdoor sports. Children, pregnant women, the elderly, and those suffering from chronic illnesses, especially heart and respiratory disease, should remain indoors when haze hits unhealthy levels. Healthy adults should avoid unnecessary outdoor activities. If you must exercise outdoor, avoid exercising in highly congested areas near busy roads and freeways, particularly during rush hours.Last but not least, Limit or avoid smoking indoor and the use of gas stove, wood fireplace, candles, incense and anything that burns and emits smoke. In an enclosed area, smoke, gases and pollutants emitted from burning sources are trapped indoor and can build up to hazardous level if they continue to burn for an extended period of time.。