华南地区高背景值土壤迁移途径及人体健康风险评价研究

Migration Routes and Human Health Risk Assessment of Soils with High Background Values in South China

华南地区土壤主要为赤红壤、红壤、黄壤,砷土壤环境背景值高于国家建设用地及农用地标准值,且高背景值土壤分布存在不确定性,可能会存在生活、工作用地中,经过人体暴露、农作物摄入等迁移途径,对人体健康可能造成风险。通过不断推进土壤污染状况调查,调查结果会提供更加详细的数据,进一步厘清高背景土壤的分布范围,确保建设用地安全利用;采取重金属阻隔措施,阻碍重金属往农作物迁移,保证农作物食用安全,使土壤环境风险得到全面管控。

The soils in south China are mainly red soil and yellow soil,and the environmental background value of arsenic soil is higher than the national standard value of construction land and agricultural land.The distribution of soil with high background value is uncertain,which may exist in living and working land,and may cause risks to human health through migration routes such as human exposure and crop intake.By constantly promoting pollution condition investigation,the findings would provide more detailed data,further clarify the high background soil distribution range,ensure safe use of construction land.Heavy metal barrier measures will be taken to block the migration of arsenic to crops,ensure the food safety of crops,and comprehensively control soil environmental risks.