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《Environmental Science & Technology》 2009-02
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Distribution of n-alkane and Environmental Significance about the Lanzhou Atmospheric Dust

GUO Fang-qin, ZHANG Cheng-jun, ZHANG Yun, LIU Yan, HUANG Ya-juan (Institute of Environment Science,School of Resource and Environment Science,Lanzhou University,Lanzhou 730000,China)  
Organic components of alkane in falling dust of Lanzhou City,Gansu Province was analyzed to estimate the air quality of Lanzhou during winter which is the heating period in northern China and its pollution source. Results showed that there were three distribution types of n-alkane,and the single peak mainly with rear peak has great percentage in TSP of Lanzhou,with dominant peak as C29 and C31 and C24~C27 as main components of alkane in TSP. Organics in air particles were mainly originated from terraneous higher plants and human activities such as coal burning,incomplete burning of oil products and exhaust gas discharged from vehicles. Alkane spectrum illustrated that human activity has significant contribution to TSP and plants in winter are in bad status. Role of microorganism in falling dust may be one of factors in increasing organic mass.
【Fund】: 国家自然科学基金(40773064);; 国家自然科学重点基金项目资助(NSFC-40773064)
【CateGory Index】: X51
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