| 长春市城区土壤中Pb、Cu、Zn、Cd及Cr化学形态特征 |
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| 引用本文： | 杨忠平,卢文喜,辛欣,刘新荣,杨青春.长春市城区土壤中Pb、Cu、Zn、Cd及Cr化学形态特征[J].土壤通报,2011(5). |
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| 作者姓名： | 杨忠平 卢文喜 辛欣 刘新荣 杨青春 |
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| 作者单位： | 重庆大学土木工程学院;吉林大学环境与资源学院;E.T.S.Ingenieros de Caminos Canalesy Puertos Universidad de ACorua Campus de Elvia s/n 15192 La Corua Spain; |
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| 基金项目： | 中央高校基本科研业务费资助(CDJRC10200013); 中国博士后科学基金项目(20100470118); 中国地质调查局项目(基[2005]011-08)资助 |
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| 摘 要： | 为弄清长春市城市土壤中Pb、Cu、Zn、Cr及Cd的化学形态分布特征,系统采集了26件城市表层(0~20 cm)土壤样品,采用连续提取法对重金属各化学形态含量进行了测定。结果表明:Pb、Zn、Cu及Cr主要以残渣态存在,其次是铁锰氧化物结合态、腐殖酸结合态和强有机结合态占有次要地位,离子交换态和水溶态所占比例均较低;Cd则主要以碳酸盐结合态存在,同时,水溶态和离子交换态所占比例较高。残渣态Pb和Zn在城区表层土壤中所占比例较近郊土壤中略有下降,但幅度不大,除Cu外,其余各元素易迁移、高生物有效性的水溶态在城区表层土壤中所占比例略有上升。Pearson相关分析结果表明,各元素残渣态与全量均呈极显著正相关,其它各活性态与全量间的相关程度与重金属种类有关。土壤pH值和Fe、Mn含量对重金属的化学形态的影响也与重金属种类有关,而且,同一重金属的不同存在形态受土壤pH值和Fe、Mn含量的影响程度也不同。
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| 关 键 词： | 城市土壤 重金属 化学形态 长春 |
Chemical Morphological Features of Pb,Cu,Zn,Cd and Cr in Urban soil of Changchun City,China |
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| YANG Zhong-ping ,LU Wen-xi ,XIN Xin ,LIU Xin-rong ,YANG Qing-chun.Chemical Morphological Features of Pb,Cu,Zn,Cd and Cr in Urban soil of Changchun City,China[J].Chinese Journal of Soil Science,2011(5). |
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| Authors: | YANG Zhong-ping LU Wen-xi XIN Xin LIU Xin-rong YANG Qing-chun |
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| Institution: | YANG Zhong-ping 1,LU Wen-xi 2,XIN Xin 2,LIU Xin-rong 1,YANG Qing-chun 3 |
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| Abstract: | The chemical morphological features of heavy metals(Cu,Pb,Zn,Cr and Cd) in urban soil of Changchun city were studied using a sequential extraction method.A total of 26 soil samples(0-20 cm) were collected and analyzed.The results showed that Pb,Zn,Cu and Cr were mainly associated with the residual fraction,and were least present in water-soluble and ion-exchangeable fraction.The Fe-Mn oxide fraction was the next important phases for Pb and Zn,while humic acid and strong organic matter fractions were the nex... |
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| Keywords: | Urban soil Heavy metals Chemical forms Changchun |
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