干旱区生态环境知识资源中心(Arid): 绿洲油菜根际土壤中Cd,Pb赋存形态特征及其互作影响

Arid

	绿洲油菜根际土壤中Cd,Pb赋存形态特征及其互作影响
其他题名	The characteristics and interaction effects of Cd,Pb in oasis cole soil
	赵转军 1; 南忠仁1 ; 王兆炜 1; 杨一鸣 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2013
卷号	27 期号:12 页码:93-99
中文摘要	采用盆栽试验,设计了Cd、Pb以及Cd/Pb复合胁迫三种污染情景模式种植油菜,利用Tessier连续提取法对绿洲油菜地土壤重金属元素的形态含量及比例特征进行了分析。结果表明:干旱区绿洲油菜地原状土壤中Cd和Pb分别主要以铁锰氧化物结合态及残渣态形式存在,而添加可溶性Cd和Pb后,两金属的主要赋存形态均为碳酸盐结合态。在任何浓度添加水平,可交换态Cd,Pb对外界浓度胁迫响应最大,残渣态响应最小。三种污染情景模式下油菜根际土壤中Cd,Pb形态拟合方程及生物活性系数的对比分析表明:两金属的互作对各元素活性的影响为:Pb的加入抑制Cd的土壤活性,而Cd的共存则促进Pb的土壤活性。
英文摘要	Pot experiments were conducted on coles (Brassica) grown in oasis soils jointly treated with traces of two heavy metals: cadmium (Cd) and lead (Pb).Three scenarios of Cd,Pb and Cd - Pb were designed to compare the interaction of speciation between the Cd and Pb.The results obtained from Tessier’s sequential extraction schemes indicated that Cd and Pb were mainly separately bounded with Fe - Mn fraction and residual fraction in controlled soil,while the carbonate fraction in amended soil.Under the control and stress of exotic Cd and Pb, exchangeable fractions of these two metals were always the most sensitive to the changes.However,residual fractions showed less influence.Comparing study which focused on regression equations and Mobility Factor(MF) of Cd,Pb under three scenarios revealed that Pb could weaken the availability of Cd,and Cd could facilitate the availability of Pb in cole’s soil.
中文关键词	复合作用 ; Tessier连续提取法
英文关键词	Cd Pb Cd Pb interaction Tessier’s sequential extraction oasis cole field
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:4961778
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/2XILL650/229674
作者单位	1.兰州大学资源环境学院, 兰州, 甘肃 730000, 中国; 2.西北民族大学化学工程学院, 兰州, 甘肃 730030, 中国
推荐引用方式 GB/T 7714	赵转军,南忠仁,王兆炜,等. 绿洲油菜根际土壤中Cd,Pb赋存形态特征及其互作影响[J]. 兰州大学,2013,27(12):93-99.
APA	赵转军,南忠仁,王兆炜,&杨一鸣.(2013).绿洲油菜根际土壤中Cd,Pb赋存形态特征及其互作影响.干旱区资源与环境,27(12),93-99.
MLA	赵转军,et al."绿洲油菜根际土壤中Cd,Pb赋存形态特征及其互作影响".干旱区资源与环境 27.12(2013):93-99.