南阳市独山矿山周围土壤重金属污染评价及其源解析

陈俊涵; 李岩; 孙浩翔; 吴清漪; 缪依凡; 胡瑞雪; 李柠; 程新宇; 魏家祥

doi:10.12302/j.issn.1000-2006.202403026

陈俊涵, 李岩, 孙浩翔, 吴清漪, 缪依凡, 胡瑞雪, 李柠, 程新宇, 魏家祥

南京林业大学学报（自然科学版） ›› 2025, Vol. 49 ›› Issue (6) : 215-224.

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南京林业大学学报（自然科学版） ›› 2025, Vol. 49 ›› Issue (6) : 215-224. DOI: 10.12302/j.issn.1000-2006.202403026

研究论文

南阳市独山矿山周围土壤重金属污染评价及其源解析

陈俊涵 ¹ ,
李岩 ¹^,²^,^* ,
孙浩翔 ¹ ,
吴清漪 ¹ ,
缪依凡 ¹ ,
胡瑞雪 ¹ ,
李柠 ¹ ,
程新宇 ¹ ,
魏家祥 ³

作者信息 +

Evaluation and source analysis of heavy metal pollution in soil around Dushan mine in Nanyang City

CHEN Junhan ¹ ,
LI Yan ¹^,²^,^* ,
SUN Haoxiang ¹ ,
WU Qingyi ¹ ,
MIAO Yifan ¹ ,
HU Ruixue ¹ ,
LI Ning ¹ ,
CHENG Xinyu ¹ ,
WEI Jiaxiang ³

Author information +

文章历史 +

摘要

【目的】明晰南阳市独山矿山周围城市和农田土壤重金属的空间分布特征、污染状况及其来源。【方法】以南阳13个县(区)为研究区进行设点采样,对样本中Cr、Ni、Cu、Cd、Pb和Mn含量进行检测。运用反距离空间插值法探讨其分布特征,采用单项污染指数、内梅罗综合指数和潜在生态风险指数进行重金属生态风险评价,基于Monte Carlo耦合模拟进行人体健康风险评价。同时通过绝对因子分析-多元线性回归(APCS-MLR)受体模型对重金属进行源解析。【结果】①研究区土壤中Cr、Ni、Cu、Cd、Pb和Mn含量均高于背景值,各重金属空间分布存在差异性。②土壤单项污染指数和内梅罗综合指数评价结果显示,Cd污染最为严重,表层土壤样本整体处于Cd中度及以上污染水平。潜在生态风险指数评价结果显示采样点综合潜在生态风险指数仅有4%处于极高生态风险。③健康风险评价显示重金属对成人和儿童的非致癌风险在阈值范围内较为安全, Cr、Ni、Cu和Cd这4种重金属对成人和儿童综合致癌风险不显著。④通过APCS-MLR受体模型进行推测得到Cr、Ni、Cu和Mn源为土壤母质,Cd和Pb为工业和交通混合源。【结论】南阳市矿山周围土壤重金属在生态和人体健康方面都存在一定程度的污染和影响,需要采取有效措施防范其污染风险。

Abstract

【Objective】This study aims to clarify the spatial distribution characteristics, pollution status, and sources of heavy metals in urban and agricultural soils surrounding Dushan Mountain mining area in Nanyang City.【Method】Sampling sites were established across 13 counties (districts) of Nanyang City. The concentrations of Cr, Ni, Cu, Cd, Pb and Mn in soil samples were analyzed. Spatial interpolation was employed to investigate distribution patterns. Ecological risk assessments were conducted using single pollution index, Nemerow composite index, and potential ecological risk index. Human health risks were evaluated through Monte Carlo coupled simulation. Source apportionment was performed via the absolute principal component scores-multiple linear regression (APCS-MLR) receptor model.【Result】(1) The concentrations of Cr, Ni, Cu, Cd, Pb and Mn in studied soils exceeded regional background values, showing distinct spatial heterogeneity.(2) Single pollution index and Nemerow composite index assessments revealed Cd as the most severe contaminant, with 84% of surface soil samples reaching moderate or higher Cd pollution levels. The potential ecological risk index (RI) indicated only 4% of sampling points exhibited extremely high ecological risk. (3) Health risk evaluation demonstrated that non-carcinogenic risks for adults and children remained within acceptable thresholds, while combined carcinogenic risks from Cr, Ni, Cu and Cd showed no statistical significance.(4) The APCS-MLR receptor model inferred suggested Cr, Ni, Cu and Mn originated from pedogenic sources, whereas Cd and Pb derived from industrial and transportation mixed sources.【Conclusion】The surrounding soils of Dushan mining area exhibit discernible heavy metal contamination with ecological and health implications, necessitating targeted pollution control measures by relevant authorities.

导出引用

陈俊涵, 李岩, 孙浩翔, 等. 南阳市独山矿山周围土壤重金属污染评价及其源解析[J]. 南京林业大学学报（自然科学版）. 2025, 49(6): 215-224 https://doi.org/10.12302/j.issn.1000-2006.202403026

CHEN Junhan, LI Yan, SUN Haoxiang, et al. Evaluation and source analysis of heavy metal pollution in soil around Dushan mine in Nanyang City[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2025, 49(6): 215-224 https://doi.org/10.12302/j.issn.1000-2006.202403026

中图分类号： S713;X53;X82

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