| 陈自然,孙紫坚,周亦,戚麒,樊彦超.承德韩麻营钒钛磁铁矿矿集区土壤重金属污染与生态风险评价[J].矿产勘查,2025,16(5):1170-1177 |
| 承德韩麻营钒钛磁铁矿矿集区土壤重金属污染与生态风险评价 |
| Pollution and ecological risk assessment of heavy metal in the soil of vana-dium titano-magnetite mine area in Hanmaying, Chengde, north China |
| 投稿时间：2024-12-20 |
| DOI：10.20008/j.kckc.202505021 |
| 中文关键词: 土壤 重金属 污染评价 生态风险评价 钒钛磁铁矿 |
| 英文关键词: soil heavy metal pollution evaluation ecological risk assessment vanadium titano-magnetite |
| 基金项目:本文受承德市富锶功能农产品产业化关键技术研究(202304B047)和中国地质调查局项目“承德伊逊河流域及坝上地区物探、钻探和立地调查”(WT2020197B)资助。 |
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| 中文摘要: |
| 本文以承德市隆化县韩麻营镇钒钛磁铁矿矿集区所在的微小流域地表浅层土壤为研究对象，采集 194件土壤样品，测试 Cu、Ni、Cd、Cr、Pb、Zn、Hg、As共 8种重金属元素含量，通过内梅罗污染指数法和地累积指数法评估了矿集区周边地表浅层土壤重金属的污染程度，并结合潜在生态危害指数法对矿集区矿区周边地表浅层土壤生态环境风险进行了系统评价。结果显示，研究区地表浅层土壤中 Zn、Cu、Cd元素重金属的含量均明显高于河北省土壤重金属元素含量的背景值，而地表浅层土壤中 Cr、Ni、Pb、As、Hg元素重金属的平均含量略低于河北省土壤重金属元素含量背景值，地表浅层土壤重金属元素的空间分布特征表现为均匀分布。大部分区域土壤重金属污染程度为轻度，少数区域达到中度污染，仅在极个别局部地区出现 Cr、Ni、Zn、Cu、Cd、Pb、Hg的重度污染特征，整体上研究区土壤环境较为清洁。高浓度重金属元素主要集中在矿区及人类活动频繁的区域，表明钒钛磁铁矿及伴生矿物的开采活动以及人类生产活动对土壤重金属的空间分布产生了显著影响。 |
| 英文摘要: |
| Taking the shallow surface soil of a small watershed where the vanadium-titanium magnetite oreconcentration area is located in Hanmaying Town, Longhua County, Chengde City As the research object, a total of194 soil samples were collected to test the concentrations of eight heavy metal elements, including Cu, Ni, Cd, Cr,Pb, Zn, Hg, and As. The degree of heavy metal pollution in the surface shallow soils surrounding the mining areawas assessed using both the geoaccumulation index method and the Nemero pollution index method. Additionally, asystematic evaluation of the ecological environmental risks associated with heavy metals in these surface shallowsoils was conducted by employing the potential ecological risk index method. The results indicate that the concentra.tions of heavy metals Zn, Cu, and Cd in the surface shallow soil of the study area are significantly higher than thebackground values for heavy metal elements in Hebei Province. In contrast, the average concentrations of Cr, Ni,Pb, As, and Hg are slightly lower than the background values. The spatial distribution characteristics of heavy metalelements in the surface shallow soil exhibit a uniform distribution pattern. The majority of the regions exhibit a mildlevel of soil heavy metal contamination, while in a few areas it reaches moderate pollution. The severe pollutioncharacteristics of Cr, Ni, Zn, Cu, Cd, Pb, and Hg are observed only in a few localized areas. Overall, the soil environ.ment within the study area is relatively clean. High concentrations of heavy metal elements are primarily concen.trated in mining regions and areas with frequent human activities. This indicates that the extraction activities ofvanadium-titanium magnetite and its associated minerals, along with human production activities, have significantlyinfluenced the spatial distribution of heavy metals in the soil. |
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