Health Risk Assessment And Remediation Advice Of Soil Heavy Metals Pollution In Some Relocated Electroplating Site Of GuangDong

Electroplating move somewhere in guangzhou area as the study area, adopting the pollution area of risk assessment technology guideline of evaluation methods, using HERA software a plating relocation sites in guangzhou to human health risk assessment of heavy metal pollutants in the soil, discusses the pollution area of human health risk assessment methods, and effective repair and management for the site and provide reference for rational development and utilization and the suggestion. The results showed that:(1) the field in the soil of nickel chromium (Cr6+) and cancer risk index were1.74×10-5,4.91×10-5, more than its evaluation standard10-6, showed that it had a higher risk of cancer in humans.(2) the site of chromium in soil (Cr3+), nickel, copper, silver not carcinogenic hazard entropy were16.7,20.8,4.68,20.8, and were higher than its basic value1, show that the ground soil of nickel chromium (Cr3+) and have higher than carcinogenic harm of copper and silver has certain non carcinogenic hazard.(3) calculated by the target value of soil restoration based on human health are:trivalent chromium is:155mg/kg; Copper is:1550mg/kg; Nickel is:59.1mg/kg; Silver is:13.1mg/kg. Each pollutant concentration is greater than the target area with a total area of11475.2m2, the total volume is about10639.2m after.(4) according to the evaluation results, and puts forward the protective work, strengthen governance according to the target pollutants content and location distribution key area to determine the repair, prevention and control of pollutant diffusion and so on management, restoration and management of this site are suggested.