首页 | 期刊介绍 | 编委会 | 道德声明 | 投稿指南 | 常用下载 | 过刊浏览 | In English
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 57次   下载 0  
分享到: 微信 更多
九龙江口表层沉积物重金属的污染特征与来源分析
李青生1, 王翠2, 蒋金龙2, 黄金良3, 吴耀建1
1.自然资源部第三海洋研究所;2.福建省海洋生态保护与修复重点实验室自然资源部第三海洋研究所;3.厦门大学
摘要:
为了解九龙江口表层沉积物重金属的污染特征,于2013年9月在九龙江口进行了表层沉积物采样调查分析,结果表明:沉积物中Cu、Pb、Zn和Cd的空间分布较为相似,高值区均分布在南溪入海口和海门岛下游海域,Cr含量的高值区也分布在南溪入海口附近。聚类分析将采样点位分为四类,第一类主要分布在河口区外侧,沉积物中油类含量较高;第二类主要分布在南溪出海口,硫化物、Zn和Cr的含量较高;第三类分布在河口区中北部,污染物含量处于中等水平;第四类主要分布在海门岛下游海域,TOC含量较高。地质累积系数评价显示,Hg、Cu、Pb、Zn、Cr、As处于未污染到轻度污染水平,Cd为轻度污染到重度污染水平;Cu、Zn、Cr、Cd的Igeo指数相对较高,第一类和第三类站位的Igeo指数相对较高。相关分析表明,硫化物与Cu、Zn、Cd呈正相关关系,Cu与Zn、Cd、Cr呈正相关关系,Pb与Zn、Cd呈正相关关系,Zn与Cd、Cr呈正相关关系。主成分分析表明,河口沉积物重金属主要有以下几个可能来源:流域和河口的工农业活动和采矿活动、流域水土流失、流域自然风化。针对河口沉积物重金属污染,流域-河口污染控制与生态修复需采取以下措施:工业污染的控制、农业污染控制、养殖污染的控制、植树造林与河岸带绿化和矿山生态恢复。
关键词:  重金属,表层沉积物,污染特征,来源分析,九龙江口
DOI:
分类号:X55
基金项目:国家自然科学基金(41406121);自然资源部第三海洋研究所基本科研业务专项(海三科2012020)[Foundation: National Natural Science Foundation of China, No. 41406121; Scientific Research Foundation of Third Institute of Oceanography, Ministry of Natural Resources, No. 2012020]
Pollution characteristics and source apportionment of surface sediment heavy metals in Jiulong River Estuary
LI Qingsheng,WANG Cui,JIANG Jinlong,HUANG Jinliang,WU Yaojian
1.Third Institute of Oceanography,Ministry of Natural Resources;2.Xiamen University
Abstract:
In order to explore the pollution characteristics of heavy metals in the surface sediments of the Jiulong River Estuary, a surface sediment sampling survey was conducted in September 2013. The results showed that the spatial distribution of Cu, Pb, Zn, and Cd in sediment was similar, with the high-value areas distributed in Nanxi Estuary and the lower reaches of Haimen Island. The high-value area of Cr content was distributed near Nanxi Estuary. Sampling points were divided into four categories based on cluster analysis. The first category was distributed outside the estuary area with higher oil content. The second category was mainly distributed in Nanxi Estuary with higher sulfide, Zn and Cr contents. The third category was distributed in the middle and northern part of Jiulong River Estuary, and the content of pollutants in the sediment was medium. The fourth type was mainly distributed in the downstream of Haimen Island, and TOC content was high. The evaluation of Geoaccumulation Index showed that Hg, Cu, Pb, Zn, Cr, and As were unpolluted to moderately unpolluted, and Cd was at a moderate to strongly polluted level. The Igeo indices of Cu, Zn, Cr and Cd were relatively high, and the Igeo indices of the second and fourth categories of stations were relatively high. Correlation analysis showed that sulfide has a positive correlation with Cu, Zn and Cd. Cu has a positive correlation with Zn, Cd, and Cr. Pb has a positive correlation with Zn and Cd. Zn has a positive correlation with Cd and Cr. Principal Component Analysis showed that there are several possible pollution sources of heavy metals in surface sediments: industrial and agricultural activities and mining activities in the river basin, soil erosion and natural weathering. Following measures need to be taken in the river-estuary pollution control and ecological restoration: industrial pollution control, agricultural pollution control, aquaculture pollution control, afforestation and riparian greening and mine ecological restoration.
Key words:  heavy  metal, surface sediment, pollution characteristics, source apportionment, Jiulong River Estuary
版权所有 《海洋科学》编辑部 Copyright©2008 All Rights Reserved
主管单位:中国科学院 主办单位:中国科学院海洋研究所
地址:青岛市南海路七号  邮编:266071  电话:0532-82898755  E-mail:marinesciences@qdio.ac.cn
技术支持:北京勤云科技发展有限公司