The Comparative Study of Heavy Metal Contamination between the Nile Delta and the Yangtze Delta
详细信息
- 责任者：Gu Jiawei (Department of Geography ; Henan Institute of Education ; Zhengzhou 450014 ; China) ; Wang Can
- 刊名：Earth and Environment
- 出版年：2013
- 卷期：41(3)
- 关键词：重金属 ; heavy metals ; 水污染 ; water pollution ; 长江三角洲 ; Yangtze River Delta ; 尼罗河 ; Nile
- 页码：p.233-241
- 图表：3 illus., 2 tables, 51 refs.
- 分类号：1800
- issnNo：ISSN1672-9250
- isbnNo：CN52-1139/P
摘要
In this study the authors attempt to compare the spatial distribution of heavy metals(Al,Cd,Cr,Cu,Fe,Mn,Ni,Pb and Zn) on the Nile Delta and the Yangtze Delta.The horse-saddle distribution pattern of polluting metals along the Nile coast,as evidenced by the Enrichment Factor(EF),is closely associated with the regulated runoff to the lower delta plain and coast,where extremely low precipitation occurs.This physical setting is certainly prone to concentrating anthropogenic heavy metals in the lagoons.Since the impoundment of Aswan High Dam the lagoons have evolved into the heavy metals sink.The opposite example is the intensively-cultivated Yangtze Estuary in China,where monsoonal precipitation flushes out a huge amount of metals as manifested by the lower EF than that of the Nile.Differences in heavy metals distribution on the two deltas are thought to be closely linked to their unique physical settings and human activities.
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