| 刘洋,刘明庆,王磊,尹爱经,黄忠林,姚丹丹,代威,王宁,王辉.云南某废弃硅厂周边农田土壤重金属污染评价[J].农业环境科学学报,2022,41(4):785-793. |
| 云南某废弃硅厂周边农田土壤重金属污染评价 |
| Evaluation of heavy metal pollution in farmland soil around an abandoned silicon plant in Yunnan |
| 投稿时间：2021-07-23 |
| DOI：10.11654/jaes.2021-0839 |
| 中文关键词: 土壤重金属 污染评价 综合质量影响指数 废弃硅厂 |
| 英文关键词: heavy metals in soil pollution assessment influence index of comprehensive quality silicon factory |
| 基金项目:国家自然科学基金项目（42077034）；地方政府委托项目（CN）（Nos.201906，DHHCFW2020028） |
| 作者 | 单位 | E-mail | | 刘洋 | 中国科学院南京土壤研究所, 南京 210008
中国科学院大学, 北京 100049 | | | 刘明庆 | 生态环境部南京环境科学研究所, 南京 210042 | | | 王磊 | 生态环境部南京环境科学研究所, 南京 210042 | | | 尹爱经 | 生态环境部南京环境科学研究所, 南京 210042 | | | 黄忠林 | 广西博世科环保科技股份有限公司, 南宁 530000 | | | 姚丹丹 | 中国科学院南京土壤研究所, 南京 210008
中国科学院大学, 北京 100049 | | | 代威 | 中国科学院南京土壤研究所, 南京 210008
中国科学院大学, 北京 100049 | | | 王宁 | 中国科学院南京土壤研究所, 南京 210008
中国科学院大学, 北京 100049 | | | 王辉 | 中国科学院南京土壤研究所, 南京 210008
中国科学院大学, 北京 100049 | hwang@issas.ac.cn |
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| 中文摘要: |
| 为研究云南省某废弃硅厂周边农田土壤重金属污染状况及评价重金属对土壤环境质量的影响，分析了土壤重金属Cd、Cr、Cu、Ni、Pb、Zn、Hg和As的含量，并采用单项污染指数法、内梅罗综合指数法和土壤综合质量影响指数法对土壤重金属污染状况进行了评价。结果表明：废弃硅厂周边农用地土壤重金属Cd、Cr、Cu、Ni、Pb、Zn、Hg和As的平均值分别为0.39、82.04、33.24、44.85、50.62、109.20、0.12 mg·kg-1和34.40 mg·kg-1，分别为云南土壤背景值的1.77、1.26、0.72、1.06、1.25、1.22、2.00倍和1.87倍；土壤重金属相关性分析表明，Cd、Zn、Hg、As和Pb呈极显著正相关，可能来自废弃硅厂的煤烟，Cr、Cu和Ni之间呈极显著正相关，并与其余重金属呈显著负相关或不相关，可能来自母质或其他污染源；单项污染指数表明，土壤As存在超标现象，为该地区的主要污染物；内梅罗综合指数表明，靠近硅厂的果园（S1）和稻田（S2）土壤呈轻度污染，远离硅厂的稻田（S3）土壤呈清洁状态；土壤综合质量影响指数表明，靠近硅厂的S1和S2土壤呈亚污染状态，远离硅厂的S3土壤呈清洁状态。研究表明，应该重视该区域农用地的重金属污染问题，并优先开展As污染的修复工作。 |
| 英文摘要: |
| To study the pollution status of heavy metals in farmland around an abandoned silicon factory in Yunnan Province and evaluate the impact of heavy metals on soil environmental quality, the Cd, Cr, Cu, Ni, Pb, Zn, Hg, and As contents of soil were analyzed. Soil heavy metal pollution was evaluated using the single pollution index method, the Nemerow index method, and the influence index of the comprehensive quality method. In soil from the study area, the average values of Cd, Cr, Cu, Ni, Pb, Zn, Hg, and As were 0.39, 82.04, 33.24, 44.85, 50.62, 109.20, 0.12 mg·kg-1, and 34.40 mg·kg-1, respectively, which were 1.77, 1.26, 0.72, 1.06, 1.25, 1.22, 2.00 times, and 1.87 times of the corresponding Yunnan soil background value. Correlation analysis of soil heavy metals showed that Cd, Zn, Hg, As, and Pb were positively correlated with each other, which likely originate from the soot of the waste silicon plant. Cr, Cu, and Ni were positively correlated with each other and negatively correlated with or not correlated with other heavy metals. These metals may originate from parent materials or other pollution sources. The single pollution index showed that As in the soil exceeded the standard and was the main pollutant in this area. The Nemerow index showed that the soil of orchards（S1）and paddy fields（S2）near the silicon plant were slightly polluted, while the soil of paddy fields（S3）was far away from the silicon plant was not polluted. Similarly, the influence index of comprehensive quality showed that the soil of S1 and S2 near the silicon plant were in a sub-polluted state, while the S3 far away from the silicon plant were in a clean state. Therefore, attention should be paid to the heavy metal pollution of agricultural land in this region, and priority should be given to the remediation of As pollution. |
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