| With the development of industry and urbanization process accelerated in recent years,the soil pollution problems are worse and pose a serious threat no matter for the normal operation of the ecosystem or human body health.The industrial park has gotten rapid development for several decades years,as the same time,the damage to soil environment quality has been caused.Therefore,carrying out the soil pollution survey and studying the present situation of industrial park soil has important guiding significance for the prevention and control of soil pollution.The study comprehensively evaluated soil heavy metal and organic matters pollution adopted the single factor index method and Nemero index method and calculated the risk values of these pollutants used health risk assessment model.The results concluded that:polycyclic aromatic hydrocarbon pollutants content in soil samples were high and the pollution level was serious according to the human exposure ecological risk assessment standard threshold of European society,and the risk values calculated are slightly higher than international acceptable maximum risk 1×10-6.More of it,the cadmium and zinc in soil samples were slightly more than standard.Finally,analyzed the soil contamination source and summarized the problems existed in the study area according to background information searched:?1?Organic pollution is more serious along the green park road;?2?The overall level of heavy metal pollution is low,but excess cadmium concentration is more obvious;?3?The soil health risk level is high;?4?The composite pollution of various pollutants in the study area is relatively common;?5?The urban land planning is not perfect,some land layout is not reasonable.The sources of soil cadmium pollution heavy metals and organic pollution are:the mining and smelting enterprises discharged the wastewater containing cadmium,and transportation of tire wear are main sources of cadmium.Power plant is the main source of PAHs. |
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