基于广东某地的重金属污染场地调查与风险评估

Investigation and Risk Assessment of Heavy Metal Pollution Sites in Guangdong Province

评估广东某地重金属污染场地对活动人群的健康风险。调查采样36个土样、20个地下水样品、6个空气扬尘样品,所有样品重点检测19种土壤重金属浓度。结果显示5种重金属(Cd、Cr、Co、Cu、Zn)指标超标,重金属积累已开始逐步迁移到更深层土壤环境中,并有随扬尘在空气中散播迁移的潜在风险,土壤中Cu离子超标并渗入到地下水。提出该场地中Cu、Co、Zn离子可能会导致人群健康危害,如地下水作为饮用水,会带来较高的暴露风险,不建议直接饮用。

To assess the health risk of the active population in a heavy metal contaminated site in Guangdong Province.36 soil samples,20 groundwater samples and 6 air dust samples were sampled.The concentration of heavy metals in 19 soils was detected in all samples.The five heavy metals(Cd,Cr,Co,Cu,Zn)exceeded the standard.The accumulation of heavy metals began to migrate gradually to deeper soil environment,and there was a potential risk of dust migration in the air.The copper ions in soil exceeded the standard and infiltrated into groundwater.The Cu,Co and Zn ions in the site may cause health hazards to the population,such as groundwater as drinking water,which will bring high exposure risk.It is not recommended to drink directly.