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《Rural Eco-environment》 2004-02
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Heavy metals in chemical fertilizer and environmental risks.

WANG Qi-chao,MA Zhuang-wei(Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012,China).Rural Eco-Environment,2004,20(2):62-64  
Determination of concentrations of the total and soluble forms of Fe,Mn,Cu,Pb,Zn,Cd,and Hg in some chemical fertilizers used in the country was conducted.The results showed that in the nitrogenous fertilizers and potash fertilizers,the content of heavy metals is relatively low while in the compound fertilizers and phosphorus fertilizer it is relatively high.In most of the chemical fertilizers,the contents of Cu,Pb,Zn,and Cd are controlled below the second grade standard for soil environmental quality and hence safe to use.But in some of the compound fertilizers and the nitrogenous fertilizer produced through sweetening with electron beam,the content of Hg well exceeded the standard,and Zn too.The use of these fertilizers,therefore,may have certain environmental risks.
【Fund】: 国家自然科学基金资助项目(40071072);; 中国科学院重要方向项目(KZCX2-302)
【CateGory Index】: X592
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