Distribution of heavy metals in sediments of the Pearl River Estuary, Southern China: Implications for sources and historical changes

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：The distribution of heavy metals (Pb,Zn,Cd and As) in sediments of the Pearl River Estuary was investigated.The spatial distribution of heavy metals displayed a decreasing pattern from the turbidity maxima to both upstream and downstream of the estuary,which suggested that suspended sediments played an important role in the trace metal distribution in the Pearl River Estuary.In addition,metal concentrations were higher in the west part of the estuary which received most of the pollutants from the Pearl River.In the sediment cores,fluxes of heavy metals were consistent with a predominant anthropogenic input in the period 1970-1990.From the mid-1990s to the 2000s,there was a significant decline in heavy metal pollution.The observed decline has shown the result of pollution control in the Pearl River Delta.However,it is noteworthy that the metal concentrations in the most recent sediment still remained considerably high.Taken together,the enrichment of heavy metals in sediments was largely controlled by anthropogenic pollution.

外文关键词：

metal pollutionsedimentspatial distributionhistorical changethe Pearl River Estuary

作者：

Feng Ye、Xiaoping Huang、Dawen Zhang、Lei Tian、Yanyi Zeng

展开 >

作者单位：

State Key Laboratory of Tropical Oceanology, South China Sea Institute of Oceanology, Chinese Academy of Sciences,Guangzhou 510301, China

Graduate School of Chinese Academy of Sciences, Beijing 100039, China

基金：

This work was supported by the Project of Knowledge Innovation Program of the Chinese Academy of SciencesNational 908 Special ProjectNational 908 Special Project国家自然科学基金国家自然科学基金

项目编号：

KZCX2-YW-Q07GD908-JC-06GD908-02-024107606941076069

出版年：

2012

DOI：

10.1016/S1001-0742(11)60783-3

环境科学学报(英文版)

中科院生态环境研究中心

环境科学学报(英文版)

CSTPCDCSCDSCI

影响因子：0.862

ISSN：1001-0742

年,卷(期)：2012.24(4)

被引量16
参考文献量10