干旱区生态环境知识资源中心(Arid): 干旱区绿洲土壤中Cd,Pb,Zn形态分布与芹菜有效性

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	干旱区绿洲土壤中Cd,Pb,Zn形态分布与芹菜有效性
其他题名	Form distributions of Cd, Pb and Zn and their availability to celery in arid oasis soil
	黄璜; 南忠仁; 刘晓文; 赵转军; 胡小娜
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2010
卷号	46 期号:1 页码:53-58
中文摘要	以干旱区绿洲耕层土壤为研究对象,通过盆栽试验,利用Tessier连续提取法研究了原状土以及外源可溶性重金属Cd,Pb,zn加入土壤后重金属形态分布,分析了土壤中重金属不同化学形态与芹菜有效性之间的关系.结果表明:原状土壤中Cd主要以铁锰氧化态和碳酸盐结合态形式存在,Pb和Zn主要以残渣态形式存在;随着重金属负荷的增大,三种重金属各形态质量分数均有不同程度的提高.Cd以可交换态和碳酸盐结合态为主要赋存形态,Pb和Zn均以碳酸盐结合态和铁锰氧化态为主要赋存形态.实验土壤中,对芹菜Cd吸收量贡献最大的分别为可交换态和碳酸盐结合态,对Pb吸收量贡献最大的分别是碳酸盐结合态和铁锰氧化态,对Zn吸收量贡献最大的分别是碳酸盐结合态和可交换态.
英文摘要	Soil samples were collected from the plowing layer of the arid oasis region and studied through pot experiments. Using Tessier sequential extraction, the distribution of chemical forms of heavy metals added in tested soil was investigated, as well as the relationship between the concentrations of chemical forms of studied heavy metals and their availability to celery. The results show that Cd existed mainly in Fe-Mn oxides bound form, while Pb and Zn mainly in residual fraction in the original soil. With the increasing amounts of heavy metals added into the soil, the concentrations of all five forms of the three metals increased to different extents. Exotic Cd of soil was found to be predominant in exchangeable form and carbonate-bound form,while exotic Pb combined with Zn was found predominantly in carbonate-bound form and Fe-Mn oxide-bound form. Cd of exchangeable form and carbonate-bound form, Pb of carbonate-bound form and Fe-Mn oxides bound form, Zn of carbonate-form and exchangeable form made the most contributions to the content of Cd,Pb and Zn in celery, respectively.
中文关键词	干旱区绿洲土壤 ; 重金属 ; 芹菜 ; 逐步回归分析
英文关键词	arid oasis soil heavy metal celery stepwise regression analysis
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:3840420
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/2XILL650/225347
作者单位	兰州大学,资源环境学院, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	黄璜,南忠仁,刘晓文,等. 干旱区绿洲土壤中Cd,Pb,Zn形态分布与芹菜有效性[J]. 兰州大学,2010,46(1):53-58.
APA	黄璜,南忠仁,刘晓文,赵转军,&胡小娜.(2010).干旱区绿洲土壤中Cd,Pb,Zn形态分布与芹菜有效性.兰州大学学报. 自然科学版,46(1),53-58.
MLA	黄璜,et al."干旱区绿洲土壤中Cd,Pb,Zn形态分布与芹菜有效性".兰州大学学报. 自然科学版 46.1(2010):53-58.