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Chapter 2- Air Pollution.docx

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thChapter 2 Urban and Tran boundary Air Pollution Week 2 Lecture 2Jan 18 2012IntroductionRespiratory diseases due to silica cotton tobacco flour and other materials Environmental lung disease derives from the study of exposed workers since the industrial revolutionRecognition of the relationship between nonworkplace community air pollution and threspiratory disease dates back to the first use of coal as a combustion source in the 14 centuryIn Europe and North America whole communities were engulfed with air pollutants resulting in srs illness and death among people with cardiopulmonary diseaseThese air pollution emergencies were caused by air stagnation which resulted in greatly increased concentrations of atmospheric pollutants especially sulfur dioxide and suspended particulatesMortality was due to mostly to bronchitis pneumonia and acute exacerbation of underlying cardiac and respiratory diseaseSeveral Aspects of the air pollutants crisis are 1since the atmosphere is dynamic and always changing contaminant are transported sometimes over thousands of miles diluted precipitated and transformedAir pollution therefore knows no boundaries or national borders2 The primary emission of sulfur oxides nitrog
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