STUDY ON RISK SCREENING VALUES AND INTERVENTION VALUES FOR SOIL CONTAMINATION OF DEVELOPMENT LAND IN SHENZHEN
The risk screening and intervention values for soil contamination of development land can be used for decision-making on soil pollution risk control and remediation.This study was based on the basic theory and methodology of soil pollution health risk assessment for global development land.It involved selecting multi-medium exposure assessment models,determining localized model parameters,calculating model theoretical values,and correcting model theoretical values.Based on the characteristics of land use for development land and the types of pollutants in typical industries in Shenzhen,the soil risk screening and intervention values for 68 pollutants under the first and second types of land use were established.The classification differences of development land in major countries and regions were analyzed.The study showed that the second-category land screening value of pollutants was higher than the first-category land,and the intervention value of the same pollutant was higher than the screening value.The screening and intervention values were within the representative range of similar soil pollution risk control standards at home and overseas.The main reasons for the differences in screening values at home and overseas are the selection of exposure assessment models,receptor exposure values,soil properties,air characteristics,pollutant toxicity parameters,and the correction of theoretical calculation values for the model.The results will play a guiding role in risk screening and control for soil contamination of development land in Shenzhen.
risk assessmentrisk screeningrisk interventioncharacteristic pollutantsland use
万方数据
维普
