Air Quality

NSCI351
CHRISTOPHER   WANG
PROFSSOR: SCOTT. R. ROSE
3/2/2012
Air Quality
              We know air pollution is one of the most worrying problems for us. This problem started during the industrial revolution, which brought about many positive changes to the world; better transportation, cheaper product, and a better life. However, these beautiful changes led to pollution on other hand. At the beginning of the industrial revolution, no one paid any attention to the problem of pollution on us earth. As the science progressed, people started to realize this problem. Each year,   air pollution is the cause of millions of human deaths, and even larger numbers of respiratory, circulatory, and cancer- related disease occurrences air pollution arise from many sources. The most common and widespread air pollutants include carbon monoxide, sulfur dioxide, nitrogen oxides and particulate matter. These air pollutants have been implicated in a number of adverse health problems including reduced lung functions, exacerbating problems, such as asthma, increasing risk chronic bronchitis and emphysema, and aggravating acute respiratory infection ( L E pg439). The burning of gasoline in automobiles produces harmful gases and incineration of products. From various factories come millions of particle that are carried off in the air. Chemical plants produce gaseous by product that is toxic when their concentration is high enough. As parts of the world become more industrialized, air pollution has generally increased and new health hazards have developed. Air pollution can also result from other causes that we cannot control. For example, forest fires, dust storms, Coal underground fire, and volcano.
          Now, The most air pollution happen in develop countries, the countries such as China, Mexico, Brazil, Indian and eastern Europe are facing substantial air pollution problems as they strive for industrial growth in the absence of vigorous air pollution control policies ( L E...