河南省北部某开发区周边耕地土壤重金属风险评价及源解析

摘要：

为了解开发区周边耕地土壤重金属污染状况、潜在风险特征及污染来源，对耕地表层土壤中8种重金属含量进行了分析评价，结果表明40个样品中 Cd 质量分数都超过农用地土壤污染风险筛选值：Zn、Pb、Cd 和Hg 的地积累指数大于1，存在一定累积；土壤重金属存在较强的潜在生态风险，以 Cd 潜在生态风险水平最高，其次为 Hg. 土壤中重金属平均综合潜在生态风险等级为极强，Cd 和 Hg的贡献率较高；成人健康风险评价表明，非致癌健康风险指数均小于1，风险可接受，有1个土壤样品的 Cd 致癌风险指数大于10-4，存在一定的致癌风险。利用受体模型进行重金属源解析，结果显示，土壤中 Cr、Ni、Cu 和 As 主要受成土母质等自然因素的影响，Cd、Pb、Hg、Zn 主要受涉重金属企业工业源的影响。综上所述，该开发区周边耕地中 Cd 污染较重且主要来源于涉重金属企业，建议针对企业重金属排放源采取措施确保耕地安全利用。

ln order to evaluate the heavy metal pollution status, potential risk characteristies, and pollution sourees in the farmland soil surrounding a development zone, the contents of 8 heavy metals in the topsoil were analyzed and assessed.The results showed that the Cd content in all 40 samples exeeeded the sereening value for agricultural soil pollution risk. The geo-aecumulation indices of Zn, Pb, Cd, and Hg were greater than l, indicating certain accumulation levels. Heavy metals in the soil presented a strong potential ecologica risk, with Cd showing the highest potential ecological risk level, followed by Hg.The average comprehensive potential ecological risk level of heavy metals in the soil was extremely strong, with Cd and Hgcontributing significantly, The health risk assessment for adults indicated that non-carcinogenic health risk indices were all less than 1, implying acceptable risk.However, the Cd carcinogenic risk index for one soil sample was greater than 10-4, indicating a certain carcinogenie risk. A receptor model was used to analyze the sources of heavy metals, showing that Cr, Ni, Cu, and As were mainly inlueneed by natural factors such as soil parent material, while Cd, Pb, Hg, and Zn were primarily affected by industrial sources related to heavy metal enterprises, ln conclusion, Cd pollution in the farmland surrounding the develop-ment zone was significant and mainly originated from heavy metal-related enterprises, Measures should be taken to ensure thesafe use of farmland by controlling heavy metal emissions from these enterprises.

作者：

马云霞，彭华，朱泽军，张涛，杨会军，赵辉

Ma Yunxia,Peng Hua,Zhu Zejun,Zhang Tao,Yang Huijun, Zhao Hui

机构地区：

河南省生态环境监测和安全中心；河南省环境监测技术重点实验室；河南省焦作生态环境监测中心

引用本文：

马云霞，彭华，朱泽军等。河南省北部某开发区周边耕地土壤重金属风险评价及源解析[J].Betway官方客服学报(自然科学版),2025,53(1):66-74.(Ma Yunxia,Peng Hua,Zhu Zejun,et al.Risk a ssessment and source analysis of heavy metals in cultivated soil around a development zone of northern Henan Province[J].Journal of Henan Normal University(Natural Science Edition),2025,53(1):66-74.DOI:10.16366/j.cnki.1000-2367.2024.02.27.0001.)

基金：

河南省自然科学基金

关键词：

土壤；重金属；健康风险；源解析

soil;heavy metals;health risk; souree analysis

分类号：

X53

河南省北部某开发区周边耕地土壤重金属风险评价及源解析.pdf