Study On The Law Of Heavy Metals Between Urban Top Soil And Street Dust

In this paper were collected 89 Guiyang city surface soil samples and 77 street dust samples, in the analysis of 1328 effective data based on, of Guiyang urban topsoil suddenly heavy metals in street dust content level, the distribution characteristic and source sentence analysis aspects were studied. The results of this paper provide a reliable scientific basis for the prevention and control of urban environmental pollution, environmental quality assessment and urban planning of Guiyang city. The main results obtained in this paper are as follows:8 soil heavy metal As, Cd, Cr, Cu, Hg, Ni, Pb, Zn content in Guiyang city are 20.06,0.3124, 37.25, 61.59, 0.1669, 47.72, 20, 201.17mg/kg, respectively.2) The content of heavy metals(as, CD, Cr, Cu, Ni in six functional areas was the highest is industrial and mining areas, residential areas, Hg content highest is business district and Cultural District, in industrial and mining areas, commercial areas and residential areas of Pb and Zn content is the highest.3) Industrial and mining areas As-Cd-Ni-Cu-Pb between geochemical properties of is similar, and is likely to have a common source of pollution; urban road As-Cd-Ni-Cu-Pb geochemical properties is similar, and is likely to have a common source of pollution.4)The average content of in Guiyang city 8 kinds of dust and heavy metals such as as,CD, Cr, Cu, Hg, Ni, Pb, Zn 11.28 and 0.6179, 13.122, 129.80, 0.3794 and 61.07, 67.81,185.98mg/kg; coefficient of variation respectively 19.99%, 27.94%, 36.51% and 44.37%,91.13%, 33.19%, 62.38%, 42.09% respectively.5) There was a negative correlation between Yan’an road dust heavy metal Cr-Pb,As-Hg-Pb in Zhongshan Road on the three kinds of heavy metals showed a positive correlation, positive correlation significantly between Baoshan heavy metals As-Pb, Cu-Zn,source of similarity between Youzha-Jiefang Road heavy metal Cr-Hg-Pb-Ni, showed a very significant positive correlation between Cu-Pb Beijing Road dust heavy metal,obviously positive correlation between As-Ni Huansha road dust heavy metal, there is obvious positive correlation between the heavy metal Cd-Zn, Xinhua Road, Cu-Zn, Pb-Zn,As-Pb showed a positive correlation between Ruijin road dust heavy metal, there was a positive correlation between the heavy metals of Cr-Ni, Ni-Zn, Si Lu Cu-Zn, there was a positive correlation between the park- gregarious road the heavy metals of As-Cu, there was a positive correlation between the water rich and noble metal URU Cu-Pb, between Zunyi road heavy metals As-Cd, Pb-Zn showed Significant negative correlation.6)Soil element Cr in residential areas appear maximum average(-1.91). In "clean";the elements of Hg in the Cultural District appear the maximum average(0.09), in the "clean" level. The other 6 elements, all in the industrial and mining areas, the largest average value.7) From different elements of the 8 kinds of heavy metal elements in the Igeo and Cu elements of the Cd value is relatively high, the scope of slight pollution is more extensive.