Knowledge Resource Center for Ecological Environment in Arid Area
干旱区绿洲灌漠土对铜的吸附解吸特性研究 | |
其他题名 | Sorption and Desorption of Copper in Irrigated Desert Soils from Oasis Regions |
王胜利; 周婷; 南忠仁; 廖琴; 武文飞; 刘姣; 晋王强; 赵翠翠; 王斌 | |
来源期刊 | 土壤 |
ISSN | 0253-9829 |
出版年 | 2011 |
卷号 | 43期号:1页码:81-88 |
中文摘要 | 土壤对重金属的吸附解吸是影响土壤系统中重金属的移动性和归宿的主要过程.本文使用序批实验方法,单步提取方法,连续提取方法等研究了干旱区绿洲灌漠土Cu的吸附解吸特性.结果表明,灌漠土对Cu的吸附等温线可很好地用Freundlich等温方程拟合,灌漠土的Cu吸附可能受土壤理化综合因素影响,而不仅是某个土壤理化指标所控制;二次幂函数可用于模拟灌漠土剖面不同层次土壤Cu解吸量与解吸前吸附量的关系;土壤对Cu的吸附几乎是不可逆的,阳离子交换机制不是灌漠土吸附Cu的主要机制,灌漠土吸附的Cu主要以无机态和有机态的形式存在,且无机态Cu所占百分比高于有机态 |
英文摘要 | Sorption and desorption of heavy metals is one of the primary processes that affect the destination and mobility of heavy metals in soils. Laboratory batch experiments, single extraction procedure and sequential extraction procedure were conducted to study the sorption and desorption of copper(Cu) in irrigated desert soils from the oasis regions. Cu sorption behavior could be described by Freundlich equation. Cu sorption capacity in the irrigated desert soils was likely to be controlled by the combination of soil characteristics such as texture,pH, organic matter, and CaCO3 rather than a single factor. Secondary power function can be used to simulate the relationship between Cu desorption capacity and sorption capacity before desorption in the irrigated desert soils. Cu sorption was irreversible(low exchangeable fraction) in the irrigated soils. Absorbed Cu was distributed mainly in inorganic fraction and organic fraction. In general, Cu percentage in inorganic fraction was higher than that in organic fraction at the studied Cu concentration, probably because CaCO3 content and high pH in the soils from arid regions |
中文关键词 | 绿洲 ; 灌漠土 ; 铜 ; 吸附解吸 |
英文关键词 | Oasis Irrigated desert soil Cu Sorption and desorption |
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:4152633 |
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/2XILL650/227157 |
作者单位 | 兰州大学, 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 | 王胜利,周婷,南忠仁,等. 干旱区绿洲灌漠土对铜的吸附解吸特性研究[J]. 兰州大学,2011,43(1):81-88. |
APA | 王胜利.,周婷.,南忠仁.,廖琴.,武文飞.,...&王斌.(2011).干旱区绿洲灌漠土对铜的吸附解吸特性研究.土壤,43(1),81-88. |
MLA | 王胜利,et al."干旱区绿洲灌漠土对铜的吸附解吸特性研究".土壤 43.1(2011):81-88. |
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