The pollution characteristics and health risk assessment of heavy metal in soil from Tongling copper mining area,Anhui province,China
In order to assess the potential risk of soil heavy metals pose to human health and the ecological environment in the abandoned mining of the Tongling mining area,the single-factor pollution index method and the Nemerow pollution index method were used to evaluate the quality of the soil environment using typi-cal abandoned plots in Tongling mining area as a case study.Additionally,a health risk evaluation model was employed to analyze the human health risk associated with heavy metal soil pollution in these plots.The results showed that the soil in the study area had reached a heavy level of pollution,the concentrations of As,Co,V and Tl exceeded the natural background values,and the comprehensive risk index for the study area was 625.94,which indicated a strong risk grade.The potential ecological risk index near the sampling point S4 was the largest,which reached the level of"extremely strong",with a trend of combined pollution.The results of risk evaluation showed that oral intake was the primary exposure pathway of soil heavy metals in this area,and both non-carcinogenic and carcinogenic risks exposure were deemed unacceptable.Among them,As and Tl were identified as the primary sources of risk and should be addressed with urgency.The study highlights significant potential health risks in this area,and the contamination of Cd,As,Hg and Tl elements should be focused on this site,and the heavy metal contamination in this area should be paid close attention to and controlled by soil treatment in the later development and utilization process.
国家科技期刊平台
NSTL
万方数据
