Distribution of Heavy Metal Cr Content in Soils on Both Sides of Traffic Roads and Its Ecological Health Risk Assessment

Abstract

Taking the surface soil of traffic road in Yiyang Industrial Park as the research object, the content of heavy metal Cr in 27 soil samples was collected and measured, the content features of heavy metalCr in soil samples are analyzed. Using the single factor pollution index and potential ecological hazard index, environmental risk index and the method of health risk assessment model for soil heavy metal pollution and health risks to study the spatial distribution characteristics. The results show that the content of heavy metal Cr in surface soil is the highest at the intersection. In traffic sections 1 and 2, the Cr content of surface soil generally followed the distribution of unary quadratic function. As the distance from the intersection increased, the Cr content of soil heavy metal first decreased and then increased. On the whole, there was no Cr pollution on the traffic section, slight Cr ecological hazard and slight total potential ecological hazard, and no environmental risk; heavy metals Cr in surface soil has health risks, and the contribution rates of carcinogenic risks of the three exposure routes are respectively: inhalation of soil particles >skin contact> oral intake, and non-carcinogenic risk contribution rates of the three exposure routes are respectively: inhalation of soil particles >skin contact>oral intake.