桂林理工大学学报2025，Vol.45Issue(2)：172-181,10.DOI:10.3969/j.issn.1674-9057.2025.02.004
太行山北段某铅锌矿区耕地土壤重金属污染评价、来源解析及生态风险评估
Pollution evaluation,source apportionment and ecological risk assessment of heavy metal in cultivated soil of a lead-zinc mining area in northern Taihang Mountains
摘要
Abstract
In order to figure out the characteristics of heavy metal pollution in soil near a lead-zinc mining area in northern Taihang Mountains,66 surface soil samples were collected.The pollution degree of seven heavy metals(Cd,Hg,As,Pb,Cr,Cu,Zn)in the research area was evaluated by Nemerow pollution index method and geoaccumulation index method.Combined with multivariate statistical analysis and positive matrix factor model,the source of soil heavy metals was analyzed.Seven forms of heavy metals were extracted and the poten-tial ecological risk comprehensive index and risk assessment coding method were used to comprehensively evalu-ate the migration ability and ecological risk.The results show that the order of heavy metals pollution in soil of the study area is as follows:Cd＞Pb＞Zn＞Hg＞Cu.As and Cr are hardly polluted and are basically not affected by external factors.The trend of multivariate statistical analysis is similar to that of PMF model source analysis,and they are mutually verified.PMF is established to be more accurate in dividing human sources.Cd,Pb,Zn,Cu and a small part of Hg are from industrial and mining activities such as ore mining,beneficiation and metallurgy(65.91％).Hg is mainly the source of atmospheric deposition caused by waste gas,dust and dust produced by ore mining and metal smelting(19.02％).As and Cr are mainly controlled by parent material sources of soil(15.07％).The study area is at a strong ecological hazard level as a whole.Cd and Hg are the main controlling factors.The migration ability and ecological risk of Cd are the highest.Acidic wastewater and leachate will significantly enhance the migration ability and ecological risk of Cd,and the supervision and treat-ment work need to be strengthened as a key focus.关键词
铅锌矿/土壤/重金属/源解析/潜在生态危害风险Key words
lead-zinc mine/soil/heavy metal/source apportionment/potential ecological hazard risk分类
资源环境引用本文复制引用
柳峰,乔晓克,郎珊珊,王国强,李龙飞,赵敬轩,魏静,张力召,陈雄..太行山北段某铅锌矿区耕地土壤重金属污染评价、来源解析及生态风险评估[J].桂林理工大学学报,2025,45(2):172-181,10.基金项目
国家自然科学基金重点项目(41930651) （41930651）
河北省自然资源厅科研项目(454-0801-JBN-Y4VF （）
13000022P006CA410121N) （）
