The Component Analysis Of Atmospheric Particulates Of Dust And Indust Season In Xinjiang South

In this paper,through comparative analysis,correlation analysis,backward trajectory method,element identification method of Xinjiang area in the south margin of the Tarim Basin in spring and summer(4.15-5.4)(8.18-9.3)concentration,ions,elements,carbon data of sub regional and seasonal dust days and analysis and Study on non dust days,and in which the captured two major dust events,the backward tracing on the track and feature elements,explore the long-distance transmission path of the event source.The results are as follows:(1)of the southern Xinjiang sampling sites are affected by the dust weather in spring in different degrees,and the dust accounted for up to 100%days.(2)the daily concentration of particulate matter in summer has been greatly improved.The background point data show that the seasonal variation of the concentration of the background point mass is reasonable.(3)the spring sampling period in April 19th and May 1st two,caught two days of heavy pollution,by weight of PMio and PM2.5 concentration of the sort can be inferred dust source the study area probably came from the Western or northern spring.The seven prefectures in the PM10(ionic composition identical,major ions are SO42-? Cl-?Ca2+and Na+.The ionic composition in Akesu area is the largest,but the total ion concentration in Akesu is basically unchanged,which indicates that the sand dust days can not significantly change the ion concentration in the air particulate matter.Research on the two organic carbon pollution in the region of Xinjiang is very serious,but the background of Changji and Hami were not affected by dust and sand weather.The carbon component transmission of local to the downstream area of spring dust days,Xinjiang major state carbon pollution mainly comes from local sources.The results of data analysis elements backtrajectory and Ca/Al than that of PM10 in April 19th the peak is caused by the external dust source,dust in the Taklimakan desert is not the origin of local sources,and the dust source direction for the north and the west,and the birthplace and the area along the no big desert.In May 1st the dust air mass may determine its propagation path for Iraq-Caspian Sea-Iran-Afghanistan-Turkmenistan-China south of Kashi.The two tracks can be inferred in Xinjiang in the spring sandstorm days,from local sources of pollution is not serious,some neighboring countries most sand originated in the northern and WesternChinese,and birthplace and along the way did not appear large desert.