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| Cd、Pb在根际与非根际土壤中的吸附解吸特点 | |
| 引用本文： | 李瑛,张桂银,李洁,魏静.Cd、Pb在根际与非根际土壤中的吸附解吸特点[J].生态环境,2005,14(2):208-210. |
| 作者姓名： | 李瑛 张桂银 李洁 魏静 |
| 作者单位： | 1. 河北农业大学资源与环境科学学院,河北,保定,071001;冶金工业部勘察研究总院环境质量研究所,河北,保定,071069 2. 河北农业大学资源与环境科学学院,河北,保定,071001 3. 保定市公安消防支队,河北,保定,071000 |
| 基金项目： | 河北省自然科学基金项目(303222) |
| 摘 要： | 采用根袋盆栽试验以及平衡法研究根际与非根际土壤对镉、铅的吸附-解吸特性。结果表明，在镉、铅起始浓度分别为Cd 0-0．6mmol／L和Pb0～1mmol／L条件下，根际与非根际土壤镉、铅吸附量差别不大，随镉、铅浓度的提高，根际土壤镉、铅吸附量均比相应的非根际土壤的高。根际与非根际土壤镉、铅解吸量随镉、铅吸附量的增加而增加，但铅解吸率(0．7％以下)明显比镉的(5％-10％)低，根际土壤镉解吸量比非根际土壤的低。 |
| 关 键 词： | 镉 铅 根际 非根际 吸附 解吸 |
| 文章编号： | 1672-2175(2005)02-0208-03 |
| 修稿时间： | 2004年10月29 |
Adsorption and desorption characteristics of Cd、Pb in rhizosphere and non-rhizosphere |
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| LI Ying,ZHANG Gui-Yin,LI Jie,WEI Jing.Adsorption and desorption characteristics of Cd、Pb in rhizosphere and non-rhizosphere[J].Ecology and Environmnet,2005,14(2):208-210. | |
| Authors: | LI Ying ZHANG Gui-Yin LI Jie WEI Jing |
| Affiliation: | LI Ying1,2,ZHANG Gui-Yin1,LI Jie3,WEI Jing1 1. College of Resource and Environment,Agricultural University of Hebei,Baoding,Hebei 071001,China, 2. Institute for Environmental Quality,Head Company of Exploration,Department of Metallurgical Industry,Baoding,Hebei 071069,China, 3. Police Fire Control Detachment,Baoding,Hebei 071000,China |
| Abstract: | A batch method was adopted to study the adsorption/desorption characteristics of cadmium (Cd) and lead (Pb) in wheat rhizosphere and non-rhizosphere, using a rhizobag pot experiment. The results showed that the adsorption amount of Cd or Pb in rhizosphere was more than that of non-rhizosphere. But at low concentration of Cd (0~0.6 mmol/L) and Pb (0~1 mmol/L), the dif-ference between adsorption amount of Cd and Pb was not remarkable in both rhizosphere and non-rhizosphere. The desorption amount of Cd and Pb increased with Cd and Pb amount adsorbed. The desorption percentage of Pb (<0.7%) was much lower than that of Cd (5%~10%). The desorption amount of Cd in non-rhizosphere was more than that of rhizosphere. |
| Keywords: | Cd Pb rhizosphere non- rhizosphere adsorption desorption |
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