关键词: 近地表降尘, 重金属, Kriging插值分析, 因子分析, 石家庄

Abstract:

The atmospheric dustfalls near surface in Shijiazhuang were systematically sampled and analyzed for their concentrations of As, Cd, Cr, Cu, Hg, Ni, Pb, Zn. The concentrations of heavy metals were in extremely great range and had large coefficients of variation, which implied there were extremely uneven distributions in concentrations of heavy metals. The Kriging interpolation statistical module space analysis method was applied in the distribution of heavy metals in Shijiazhuang ,the results showed that As, Cd, Cr , Cu were in a high value distribution, Hg, Ni, Pb and Zn elements had blobshaped pollution distribution. By reusing the method of factor analysis, we concluded that the coal and transportation have become the main contributions to the heavy metals on the surface of Shijiazhuang. Its our aim to fully understand the air quality in Shijiazhuang and provide the most fundamental information for the controlling of air pollution and city planning.

Key words: near surface dust, heavy metal, Kriging interpolation analysis, factor analysis, Shijiazhuang