苏北灌河口潮间带表层沉积物重金属空间分布特征及其环境效应

黄家祥; 殷勇; 徐军; 朱小兵

苏北灌河口潮间带表层沉积物重金属空间分布特征及其环境效应

1 南京大学海岸与海岛开发教育部重点实验室, 南京 210093;
2 河海大学水资源环境学院, 南京 210098

基金项目:

南京大学测试基金

江苏省自然科学基金项目(BK2002089)

详细信息

作者简介:
黄家祥(1982-),男,硕士研究生,海洋地质专业,E-mail:huangjiaxiang8848@163.com

中图分类号: P736.4
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- 文章访问数: 1997
- HTML全文浏览量: 167
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出版历程
- 收稿日期: 2007-04-27
- 修回日期: 2007-07-04

SPATIAL ACCUMULATION FEATURES AND ENVIRONMENT EFFICIENCY OF HEAVY METALS IN INTRA-TIDAL SURFACE SEDIMENTS OF GUANHE ESTUARY, NORTHERN JIANGSU

1 Ministry of Education Key Laboratory of Coast and Island Development, Nanjing University, Nanjing 210093, China;
2 Water Resources and Environment College, Hehai University, Nanjing 210098, China

摘要

摘要: 灌河是苏北地区最大、航运条件最好的入海河流。重金属元素分析显示,灌河口表层沉积物中Hg、As和Cu的含量高于背景值;Pb和Zn的含量接近背景值;Cd的含量低于背景值。其中Hg元素出现了中等程度的生态危害性,而Cr、As、Cu、Pb、Zn和Cd等元素的生态危害系数均极低,整个灌河口潮滩地区并没有出现较为严重的重金属生态危害。
- 粒度 /
- 重金属 /
- 相关性 /
- 潮滩 /
- 灌河口
Abstract: In northern Jiangsu coastal zone area, Guanhe is the biggest river and has the best navigation conditions among rivers which flow into the Yellow Sea. The grain sizes show gradually increasing from the high intra-tidal zone to the low intra-tidal zone. The heavy metal values have slight changes along both sides of the river mouth, but show an evident change perpendicular to the tidal flat. In the latter case, they show a good correlation with grain size fluctuation, that is,the heavy metal values gradually decline when the grain sizes increase from the high intra-tidal zone to the low intra-tidal zone.Analysis results of heavy metal elements show that in the Guanhe estuary surface sediments,contents of Hg,As and Cu are beyond background values; Pb and Zn are rather close to the background values; and Cd less than the values.Element Hg comes out to be harmful to ecological environment, while elements Cr,As,Cu,Pb,Zn,and Cd fall in a safe range of MPL. On the whole,Guanhe estuary tidal flat is not seriously ecological harmful due to the heavy metals.
- grain size /
- heavy metals /
- correlation /
- tidal flat /
- Guanhe estuary

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参考文献(14)

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