| 资江河口区农田土壤重金属污染评价及来源分析 |
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| 引用本文： | 刘文辉,马腾,李俊琦,武显仓,於昊天.资江河口区农田土壤重金属污染评价及来源分析[J].地质科技通报,2021,40(2):138-146. |
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| 作者姓名： | 刘文辉 马腾 李俊琦 武显仓 於昊天 |
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| 作者单位： | 中国地质大学（武汉）环境学院;中国地质大学（武汉）盆地水文过程与湿地生态恢复实验室 |
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| 基金项目： | 中国地质调查项目DD20190263中国地质调查项目2019040022 |
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| 摘 要： | 资江是洞庭湖的第二大支流,其中上游锑(Sb)矿采矿冶炼工业发达,给资江下游及洞庭湖区带来了严重的重金属污染风险。以资江河口区为研究区,采集了132个农田土壤样品及7个资江水样,综合采用多种污染评价方法、空间分析、多元统计分析方法对研究区重金属进行了污染评价及来源分析。结果表明,研究区农田土壤重金属平均质量分数表现为Zn>Cr>Ni>Pb>Cu>As>Sb>Cd,旱田土壤重金属平均质量分数除Pb外均高于水田。Sb、As、Cd为主要污染元素,Sb达到了中等污染和中等生态风险的程度,总体处于轻微-中等生态风险程度。资江水体Sb质量浓度较高,平均为10.51μg/L。Sb主要来源于中上游的锑矿工业,受高锑质量浓度地表水灌溉、垃圾填埋场以及燃煤等人为活动的控制;Cd主要来源于农药化肥、生活垃圾和城镇废水等人为活动;Cr主要来源于成土母质,而Cu、Zn、As、Ni、Pb受成土母质和人为活动的双重控制。
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| 关 键 词： | 资江河口 农田土壤 重金属 多元统计分析 锑 |
| 收稿时间： | 2020-05-19 |
Pollution assessment and source analysis of heavy metals in agricultural soil around Zijiang River estuary |
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| Liu Wenhui,Ma Teng,Li Junqi,Wu Xiancang,Yu Haotian.Pollution assessment and source analysis of heavy metals in agricultural soil around Zijiang River estuary[J].Bulletin of Geological Science and Technology,2021,40(2):138-146. |
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| Authors: | Liu Wenhui Ma Teng Li Junqi Wu Xiancang Yu Haotian |
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| Affiliation: | (School of Environmental Studies,China University of Geosciences(Wuhan),Wuhan 430078,China;Laboratory of Basin Hydrological Process and Wetland Ecological Restoration,China University of Geosciences(Wuhan),Wuhan 430078,China) |
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| Abstract: | Zijiang River is the second largest tributary of Dongting Lake. The developed antimony (Sb) mine mining and smelting industry in the upper and middle reaches of Zijiang River bring serious heavy metal pollution risks to the lower reaches of Zijiang River and the Dongting Lake. Taking Zijiang river Estuary as the study area, 132 agriculture soil samples and 7 water samples of Zijiang River were collected, and then multi-methods of contamination assessment, spatial analysis and multivariate statistical analysis methods were comprehensively used to evaluate pollution status and sources of the heavy metal this site. The results showed that the average concentration of heavy metals in farmland soil in the study area was Zn>Cr>Ni>Pb>Cu>As>Sb>Cd, and the average concentration of heavy metals in upland fields was higher than that in paddy fields except for Pb. Sb, As and Cd were the main pollution elements. Besides, Sb reached the level of medium pollution and medium ecological risk, and the site was generally at a slight-medium ecological risk level. The Sb concentration of Zijiang river was relatively high, with an average of 10.51μg/L. Sb mainly came from the antimony mining industry in the upper and middle reaches, and was controlled by human activities such as high antimony concentration surface water irrigation, landfills and coal burning; Cd mainly came from human activities such as pesticides, fertilizers, household garbage and urban wastewater; Cr was mainly derived from soil parent material, while Cu, Zn, As, Ni, Pb were controlled by soil parent material and human activities. |
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| Keywords: | Zijiang River estuary agricultural soil heavy metal multivariate statistical analysis antimony |
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