| 松花江上游表层沉积物中重金属元素时空分布特征 |
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| 引用本文： | 徐军,郝立波,赵新运,赵玉岩,马成有,魏俏巧,吴超,石厚礼.松花江上游表层沉积物中重金属元素时空分布特征[J].吉林大学学报(地球科学版),2018(3):854-862. |
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| 作者姓名： | 徐军 郝立波 赵新运 赵玉岩 马成有 魏俏巧 吴超 石厚礼 |
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| 作者单位： | 吉林大学地球探测科学与技术学院,长春,130026
国土资源部地球化学探测技术重点实验室,河北廊坊065000;中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000
山东省第五地质矿产勘查院,山东泰安,271000 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项(AS2016P02)，中国地质调查局项目(20089941)Supported by Basal Research Fund of Central Public Welfare Scientific Institution(AS2016P02)，Research Grant from the China Geological Survey(20089941) |
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| 摘 要： | 松花江是我国七大河流之一,研究其底泥重金属元素的时空分布特征对流域的水环境治理具有重要意义。本文对松花江(哈达山至松花湖段)底泥(表层沉积物)中元素As、Hg、Cr、Cd、Pb的分布特征进行了研究,并利用地累积指数分析了这些元素的污染状况。结果表明:研究区底泥几乎未受到As、Cr和Pb的污染,但多数地段内出现了Cd和Hg的污染,尤其是元素Hg,在个别地段的污染程度达到了极强;与10年前相比,一些重金属的污染得到了明显改善,但吉林市区段内Hg的污染仍非常严重。污染样品空间分布特征表明,松花江吉林市区段可能有来自工农业废水的重金属污染。
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| 关 键 词： | 地累积指数 重金属 时空分布 底泥 松花江 index of geo-accumulation heavy metal spatial-temporal distribution sediment Songhua River |
Spatial-Temporal Distribution of Heavy Metals in Surface Sediments from Upper Reaches of the Songhua River |
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| Xu Jun,Hao Libo,Zhao Xinyun,Zhao Yuyan,Ma Chengyou,Wei Qiaoqiao,Wu Chao,Shi Houli.Spatial-Temporal Distribution of Heavy Metals in Surface Sediments from Upper Reaches of the Songhua River[J].Journal of Jilin Unviersity:Earth Science Edition,2018(3):854-862. |
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| Authors: | Xu Jun Hao Libo Zhao Xinyun Zhao Yuyan Ma Chengyou Wei Qiaoqiao Wu Chao Shi Houli |
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| Abstract: | The Songhua River is one of the seven major rivers in China.The study of the spatial and temporal distribution characteristics of heavy metal elements in the sediment is of great significance for the water environment control of the basin.In this study,an effort is made to clarify the distribution characteristics of As,Hg,Cr,Cd and Pb in the surface sediments from the Songhua River (Hadashan-Songhua Lake region),and to evaluate the status of the heavy metal pollution using the index of geoaccumulation (Igeo).The Igeo values reveal that almost all the sediments are free from pollution by As,Cr and Pb;In contrast,most of the sediments are contaminated with Cd and Hg,especially Hg.The Hg contamination level is extremely high in individual stretch of the river.Compared with the situation of ten years ago,the pollutions of these heavy metals have been greatly reduced,except that the Hg pollution is still very serious in the region of Jilin City.The spatial distribution characteristics of polluted sediments indicate that the region of Jilin City may be significantly polluted by the heavy metals from industrial and agricultural wastewater. |
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