干旱区生态环境知识资源中心(Arid): 干旱区绿洲土壤外源Pb对Cd/Zn复合污染土壤中Cd, Zn形态分布及再分配的影响

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	干旱区绿洲土壤外源Pb对Cd/Zn复合污染土壤中Cd, Zn形态分布及再分配的影响
其他题名	Form distribution and redistribution of Cd, Zn to Cd/Zn and Cd/Zn/Pb stress in arid oasis soil
	白英; 刘铮; 颜斌; 陈竞; 王胜利; 赵转军; 南忠仁
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2013
卷号	49 期号:6 页码:759-764
中文摘要	通过干旱区绿洲土壤Cd/Zn和Cd/Zn/Pb复合作用下的盆栽试验,对比研究了外源Pb的添加对Cd/Zn复合污染土壤中Cd,Zn的形态分布与再分配的影响.结果表明: 两种组合下Cd,Zn的主要赋存形态都为碳酸盐结合态和铁锰氧化态,说明Pb的添加对Cd/Zn复合污染土壤中Cd,Zn的主要赋存形态无明显影响.Cd的全量是影响其可交换态、碳酸盐结合态和铁锰氧化态含量的主要因素,Zn的5种形态含量的主要影响因素都为Zn的全量.随着外源添加量的增加,Cd,Zn 在土壤中的总再分配系数增大,结合强度系数减小,表明Cd,Zn的总量越大,各形态间的稳定性越低,潜在危害越大.两种组合比较可知,Pb的添加使Cd/Zn复合污染土壤中Cd的活性增强,Zn的活性减弱.
英文摘要	A pot experiment was conducted to study the effect of Pb on the redistribution and the distribution of different forms of Cd and Zn in soil polluted by Cd and Zn, by testing 2 different combinations of heavy metals Cd/Zn and Cd/Zn/Pb. The results showed that the main forms of Cd and Zn were carbonate bounded form and Fe-Mn oxide form in 2 different combinations; so there was not significant effect of Pb on the main forms of Cd and Zn in Cd/Zn combined polluted soil. The total capacity of Cd was the main influence factor on its exchangeable form, carbonate bounded form and Fe-Mn oxide form. But the total capacity of Zn was the main influence factor on all of its forms. With the concentrations of Cd and Zn being increased, the redistribution index of Cd and Zn increased, and their combination indexes decreased. With the total capacity of Cd and Zn being increased, the stability of different forms became weaker, and the potential hazards of heavy metals became greater. Pb could increase the availability of Cd, but decrease the availability of Zn in compound contaminated soil.
中文关键词	绿洲土壤 ; 干旱区
英文关键词	Pb Cd Zn oasis soil Pb Cd Zn arid area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5121510
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229835
作者单位	兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	白英,刘铮,颜斌,等. 干旱区绿洲土壤外源Pb对Cd/Zn复合污染土壤中Cd, Zn形态分布及再分配的影响[J]. 兰州大学,2013,49(6):759-764.
APA	白英.,刘铮.,颜斌.,陈竞.,王胜利.,...&南忠仁.(2013).干旱区绿洲土壤外源Pb对Cd/Zn复合污染土壤中Cd, Zn形态分布及再分配的影响.兰州大学学报. 自然科学版,49(6),759-764.
MLA	白英,et al."干旱区绿洲土壤外源Pb对Cd/Zn复合污染土壤中Cd, Zn形态分布及再分配的影响".兰州大学学报. 自然科学版 49.6(2013):759-764.