| 江苏典型地区河流沉积物重金属元素分布特征及其污染来源 |
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| 引用本文： | 廖启林,任静华,姜丽,等.江苏典型地区河流沉积物重金属元素分布特征及其污染来源[J].地质学刊,2018,42(4):651-661. |
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| 作者姓名： | 廖启林 任静华 姜丽 等 |
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| 作者单位： | 江苏省地质调查研究院 |
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| 基金项目： | 江苏省基础研究计划暨自然科学基金项目（BK2017496），国土资源公益性行业科研专项（201111021） |
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| 摘 要： | 通过对河流沉积物等地表沉积物中重金属元素分布等环境地球化学调查数据的统计分析,总结了江苏典型地区河流沉积物中重金属元素的分布特点与规律:江苏局部地区河流沉积物中,Cd、Pb、Zn、Cr、Cu、Ni、Hg等相对富集趋势明显,Cd最大富集倍数 100;不同河流沉积物的重金属元素分布存在差异,与其污染来源密切相关;工业排放是导致河流重金属污染的主要原因,使用含Cd的颜料作为调色剂导致部分河流出现严重Cd污染;与土壤等其他地表沉积物相比,河流沉积物中重金属元素的分布更不均衡。查明河流沉积物的重金属元素分布可为相关农产品安全性预测、确定重金属污染来源、追踪涉重产业的发展历程、防治局部耕地重金属污染等提供科学依据。
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| 关 键 词： | 重金属元素分布 河流沉积物 污染来源 江苏 |
Distribution of heavy metal elements in fluvial sediments of typical areas in Jiangsu Province and their pollution sources |
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| Liao Qilin,Ren Jinghu,Jiang Li,et al.Distribution of heavy metal elements in fluvial sediments of typical areas in Jiangsu Province and their pollution sources[J].Jiangsu Geology,2018,42(4):651-661. |
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| Authors: | Liao Qilin Ren Jinghu Jiang Li |
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| Abstract: | By statistical analysis of related environmental geochemical survey data such as the distribution of heavy metal elements in surface fluvial sediments, this work summarized the distribution characteristics and regularity of heavy metal elements from fluvial sediments in some typical areas of Jiangsu Province. The main conclusions are as follows. Iocal fluvial sediments display obviously relative enrichment trend for some heavy metal elements including Cd, Pb, Zn, Cr, Cu, Ni and Hg, and the largest enriched multiples of Cd are larger than 100. There are some differences of the heavy metal element distribution in different fluvial sediments from different polluted sources. The heavy metals pollution originated mainly from related industrial discharge in the fluvial sediments, and serious Cd contamination was discovered in some river by overusing Cd-enriched pigments in some industrial production. The distribution of heavy metal elements in the fluvial sediments is more uneven as to other surface sediments such as soil sediments. The heavy metal element distribution in the fluvial sediments can provide important environmental geochemical evidences to predict agricultural products safety, determine polluted sources, track industrial development processes related to heavy metal products, and to cure or control local farmland heavy metal pollution. |
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| Keywords: | heavy metal element distribution fluvial sediment pollution source Jiangsu Province |
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