كليدواژه :
فلزات سنگين , دسترسي بيولوژيكي , آناليز خوشه اي , آلودگي خاك
چكيده لاتين :
Soil can retain the environmental pollution, so by chemically analyzing it, we can learn about the pollution of a region.
In the present study, samples of Tehran northwest soil are used. In total, 16 soil samples are collected and the mean concentration of Pb, Zn, Ni, and V are computed to be 173ppm, 101 ppm, 62 ppm, and 44 ppm, respectively.
The results show a higher concentration of Pb than those of other elements. Moreover, the mean Pb concentration in the present study is 1,200% higher than that of the earthʹs crust, which is because of air pollution.
The elements (Pb, Zn, Ni, V, & Fe) were also studied in terms of biological accessibility and the related figures were obtained in the following order: Pb(929ppm)>Zn(27ppm) > Fe(7ppm) > Ni(5ppm) > V(0ppm)
Furthermore, the cluster analysis revealed that Pb had an organic basis and that there was a high positive relationship between Ni and V. Since V is known as an oil pollution indicator, it can be concluded that Ni is scattered in the soil of the region due to fuel consumption
