RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2008, Vol. 17 >> Issue (1): 129-129.

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PHYSICAL AND CHEMICAL CHARACTERISTICS OF ATMOSPHERIC PARTICLES IN SHUANGQIAO FARM, JIAXING CITY

WENG Junshan1|2| DUAN Ning2| ZHANG Ying1   

  • Received:1900-01-01 Revised:1900-01-01 Online:2008-01-20

Abstract:

In order to prevent and control the air pollution of the Yangtze River Delta region and understand the variation rule of the air environmental quality in the region，it is necessary to analyze the composition and physical and chemical characteristics of particles in the air，and thus to find out the formation mechanism of the particles.Samples were sampled by Partisalplus 2025 continuous air sampling machine in Jiaxing Shuangqiao Farm which was located at the center of the Yangtze River Delta，and the chemical composition and the distribution characteristics of quality concentration of PM10 and PM25 were analyzed.The proportion of the total quality concentration of 19 kinds of inorganic elements in PM10 and PM25 were 23% and 25% with Al，Si，and Ca being the main contributing elements; the quality concentration summation of 8 kinds of watersoluble irons occupied 51% and 43% of that of PM10 and PM25 respectively，and NO-3 and SO2-4 were the main contributors in those soluble ions.The quality concentration of organic carbon occupied about 1612% and 1743% of that of PM10 and PM25，and element carbon occupied 1697% and 1584%.Therefore，it can be concluded that the region was seriously polluted by organic carbon and element carbon.The results provided basic research data to reveal the forming mechanism of atmospheric particles and to prevent and control this kind of pollution.

Key words: particle, element, PM10, PM2.5, physical and chemical characteristics

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