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- W2394220922 abstract "With the example of Zhengzhou city,Zhongmu county and Hansi town,the concentration of Pb,Cd,Cu,Zn,Cr and Ni was analyzed through field investigation and indoor determination.Then the author compared the distribution properties and potential ecological hazards of those analyzed heavy metals in different ranking urban soils.The results show as follows.The distribution properties of different heavy metal elements are also different with each other in different ranking urban soils.In detail,the general distribution patterns of Pb and Cd are in substantial agreement.And the content of Pb and Cd are generally higher than the first standard of soil environment,from which we can know that the higher the levels of the urbanization and industrialization are,the higher pollution and the greater artificial disturbance will be in urban soils.The distributions of Zn and Cr have significant difference in different ranking urban soils,which embodies complexity of anthropological activities.No obvious concentration of Cu and Ni is found in all study areas.The contents of Cu and Ni fluctuate mainly by natural fluctuation of background of heavy metal elements.(2) There exist heavy metal potential ecological hazards in different ranking urban soils to different extents.Among the five analyzed heavy metals,the potential ecological hazard of Cd is highest,meeting very strong potential ecological hazard in urban soils.But,in contrast,Pb,Zn,Cr and Cu merely reach slight ecological risk.The hazards between four study areas follows:Zhengzhou cityHansi townZhongmu countycontrast area.The result also supports the view that all three urban soils and contrast area have comparatively high hazards.These results provide certain scientific foundation for urban and rural planning,environmental treatment and ecological remediation,also ring an alarm for the eco-environment of some small towns." @default.
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- W2394220922 date "2010-01-01" @default.
- W2394220922 modified "2023-09-27" @default.
- W2394220922 title "Comparison between Heavy Metal Contents in Urban Soils and Their Potential Ecological Hazards in City and Town:a Case Study of Zhengzhou,Zhongmu and Hansi,Henan,China" @default.
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