Source Analysis and Risk Assessment of Heavy Metals in Groundwater in A Steel Plant
Taking an abandoned iron and steel plant as the research site,shallow groundwater samples were collected for analyzing the spatial distribution characteristics,sources and impacts on human health of 8 ele-ments(Cr,Cd,Fe,Mn,As,Zn,Ni,Cu).The results showed that the mean measurements of Fe and Mn in groundwater of the study area were higher than Class Ⅲ standard limits for groundwater.The contents of 8 elements were different in spatial distribution,which were higher in the central region than in the eastern re-gion,with the exception of Zn.There were 4 sources of the 8 elements,namely mixed source of fossil fuel com-bustion and wastewater discharge,dustfall source,natural source and emission source from steelmaking.Drink-ing water intake was the main exposure route in the study area.Non-carcinogenic comprehensive risk values for adults and children were both less than 1,within acceptable range.The ILCR of As for adults was higher than the maximum acceptable risk value of 1 × 10-4,indicating a potential carcinogenic risk.
Heavy metalsDistribution characteristicsSource analysisHealth risk assessmentGround-water
万方数据
维普
