| 曹妃甸老龙口现代沉积环境及重金属污染特征研究 |
| |
| 引用本文： | 于文金,邹欣庆,朱大奎.曹妃甸老龙口现代沉积环境及重金属污染特征研究[J].中国环境科学,2011,31(8):1366-1376. |
| |
| 作者姓名： | 于文金 邹欣庆 朱大奎 |
| |
| 作者单位： | 1. 南京信息工程大学省部共建教育部气象灾害重点实验室,江苏南京210044;河海大学海岸灾害及防护教育部重点实验室,江苏南京210093
2. 南京大学海岸与海岛开发教育部重点实验室,江苏南京,210093 |
| |
| 基金项目： | 国家自然科学基金资助项目(10672052); 河海灾害实验室开放基金(20090024) |
| |
| 摘 要： | 利用测年、重金属测定、粒度测定等方法,对河北曹妃甸老龙口区域的7个柱状沉积物进行了粒度、沉积物的测年、重金属含量测定和分析,探讨潮滩重金属沉积的控制因素和迁移规律.结果显示,老龙口潮滩属于细沙和粉沙,根据同位素测年结果,L06沉积速率最大,为0.90cm/a;其余柱状样沉积速率均小于0.5cm/a,平均沉积速率为0.32cm/a,曹妃甸潮滩属于缓慢沉积;柱状样垂直方向波动剧烈,受人类活动影响明显.重金属的含量在柱样的30~40cm深度呈现向表层递增的趋势,Hg、Cr的污染比较严重、其他元素基本无污染.虽然多数重金属元素在背景值附近没有出现污染现象,生态危害性极低,但是,受Pb、Hg中度重金属生态危害的影响,该区域多种重金属生态危害指数(ERI)达158.41,表现为中等程度的生态危害性;存在一定的潜在生态风险.
|
| 关 键 词： | 沉积物 粒度 210Pb测年 重金属 古河口 |
| 收稿时间： | 2010-10-18; |
Caofeidian Laolongkou modern sedimentary environments and heavy metal pollution |
| |
| YU Wen-jin,ZOU Xin-qing,ZHU Da-kui.Caofeidian Laolongkou modern sedimentary environments and heavy metal pollution[J].China Environmental Science,2011,31(8):1366-1376. |
| |
| Authors: | YU Wen-jin ZOU Xin-qing ZHU Da-kui |
| |
| Institution: | YU Wen-jin1,2,ZOU Xin-qing3,ZHU Da-kui3(1.Key Laboratory of Meteorogical Disater,Ministry of Education,Nanjing University of Inforament and Technology,Nanjing 210044,China,2.Key Laboratory of oastal Disaster and Defence,Hehai University,Nanjing 210093,3.Key Laboratory of Coastal and Island Development,Nanjing University,China) |
| |
| Abstract: | With the comprehensive measurements,the grain size,sediment dating and heavy metals content was investigated in the seven cores of Caofeidian Laolongkou region of Hebei Province,Which goal was to find the control factors and the deposition of heavy metals in tidal.Laolongkou tidal was composited with the fine sand and silt.According to the isotopic dating,the largest deposition rate was L06,which has 0.90cm/a,but deposition rate of the remaining cores were less than 0.5cm/a.The average deposition rate was 0... |
| |
| Keywords: | sediment size 210Pb dating heavy metals ancient estuary |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国环境科学》浏览原始摘要信息 |
| 点击此处可从《中国环境科学》下载免费的PDF全文 |
|
