| 镉在腐植酸上的吸附与解吸特征研究 |
| |
| 引用本文： | 李光林,魏世强,青长乐,牟树森. 镉在腐植酸上的吸附与解吸特征研究[J]. 农业环境科学学报, 2003, 22(1): 34-37 |
| |
| 作者姓名： | 李光林 魏世强 青长乐 牟树森 |
| |
| 作者单位： | 1. 西南农业大学基础科技学院,重庆,400716
2. 西南农业大学资源环境学院,重庆,400716 |
| |
| 摘 要： | 采用镉离子选择电极研究了镉在腐植酸两组分(富里酸FA、胡敏酸HA)上的吸附-解吸量和动力学特性以及介质pH的影响。结果表明,腐植酸对镉的吸附容量以FA>HA,吸附强度以HA>FA,而解吸量以FA-Cd>HA-Cd。腐植酸与镉的吸附动力学用Evolich方程描述最佳。FA对镉的吸附速度和解吸速度高于HA。当4.0
|
| 关 键 词： | 解吸特征 腐植酸 镉 吸附特征 生物有效性 |
| 文章编号： | 1672-2043(2003)01-0034-04 |
| 修稿时间： | 2002-04-12 |
Characteristics of Adsorption and Desorption of Cadmium on Humic Acids |
| |
| LI Guang -lin ,WEI Shi -qiang ,QING Chang -le ,MOU Shu -sen. Characteristics of Adsorption and Desorption of Cadmium on Humic Acids[J]. Journal of Agro-Environment Science( J. Agro-Environ. Sci.), 2003, 22(1): 34-37 |
| |
| Authors: | LI Guang -lin WEI Shi -qiang QING Chang -le MOU Shu -sen |
| |
| Affiliation: | LI Guang -lin 1,WEI Shi -qiang 2,QING Chang -le 2,MOU Shu -sen 2 |
| |
| Abstract: | Amount and kinetics characteristic s of cadmium adsorption and desorpti on on two humic acids(FA and HA)and the effect of pH were studied by the technique of cadmium ion choosing electrode.The results showed that the adsorption c apactity of cadmium on FA is larger than on HA and adsorption strength of HA is larger than of FA,and desorption amount is FA -Cd larger than HA -Cd,adsorption and desorption kinetics of cadmium on humic acids fitted with Evolich Equations the best.The s peed of cadmium adsorption on and desorption from FA is highter than that of HA.Under the c omdition of 4.0
|
| |
| Keywords: | Humic acids cadmium adsorption desorption |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《农业环境科学学报》浏览原始摘要信息 |
|
点击此处可从《农业环境科学学报》下载全文 |
|
