Evaluations of Heavy Metal Pollution Status in Surface Soils Adjacent to the Rivers and Irrigation Channel in Shenyang,China
Evaluations of Heavy Metal Pollution Status in Surface Soils Adjacent to the Rivers and Irrigation Channel in Shenyang,China
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发表时间：
2011
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通讯作者：
Liu Xiao-duan
中科院分区：
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作者：
Liu Xiao-duan
采用地积累指数（I geo）和单因素Nemerow指数（NI）方法，研究了浦江、浑河、西河和沈抚顺灌渠附近农田表层土壤中7种重金属的污染状况。表层土壤As、Hg、Cd、Pb和Cr含量的最大值出现在西河流域，Zn和Cu含量的最大值出现在沈抚灌渠。各研究区Hg、Cd、Pb、Zn、Cu和Cr的平均浓度存在显著差异。Cd和Hg高度相关，表明它们有共同的来源。Pb、Zn、As和Cu呈高度相关，表明存在另一种共同来源。Igeo和NI计算结果表明，研究区Cd、Hg、Zn污染较为普遍，Pb、Cu、Cr、As污染也在沈阳市部分河流区出现。西河附近农田土壤污染严重。
The pollution situation of seven types of heavy metals in surface soils from the farmland adjacent to the Pu River,Hun River,Xi River and the Shenyang-Fushun Irrigation Channel were studied using the geo-accumulation index(I geo) and the single factor Nemerow index(NI) methods.The maxima of As,Hg,Cd,Pb and Cr in surface soils occurred in the Xi River area and the maxima of Zn and Cu appeared in the Shenyang-Fushun irrigation channel.The average concentrations of Hg,Cd,Pb,Zn,Cu and Cr were significantly different in each studied area.Cd and Hg were highly correlated,suggesting a common source.Pb,Zn,As and Cu were highly correlated,suggesting another common source.Igeo and NI calculation showed that Cd,Hg,Zn pollution in studied areas was a common phenomenon and pollution of Pb,Cu,Cr and As also occurred in some river areas in Shenyang.The farmland soils nearby the Xi River were seriously polluted.