Effect of low-molecular-weight organic anions on electrokinetic properties of variable charge soils
文献类型：期刊论文
| 作者 | Xu, RK; Li, CB; Ji, GL |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2004-09-01 |
| 卷号 | 277期号:1页码:243-247 |
| 关键词 | variable charge soil zeta potential isoelectric point acetate malate maleate citrate oxalate |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/j.jcis.2004.04.020 |
| 通讯作者 | Xu, RK(rkxu@issas.ac.cn) |
| 英文摘要 | It is known that some inorganic anions can be adsorbed by variable-charge soils specifically, resulting in the lowering of the potential of the clay particle. Reasoning similarly, organic anions should also have such an effect. In this article, the effect of the anions of five low-molecular-weight (LMW) organic acids existing widely in soils on the potentials of two variable-charge soils was examined. The results showed that the presence of organic anions led to a decrease in potential. The effect of different anions on potential followed the order oxalate > citrate > malate > maleate > acetate. The effect increased with the increase in anion concentration and decreased with the increase in pH. The extent of the effect on different soils was apparently related to their-iron oxide content. The presence of organic anions also led to a decrease in the isoelectric point (IEP) of the soil. The IEPs of two soils in organic anion systems followed the order acetate > maleate > malate > citrate. No IEP was detected for the oxalate system. (C) 2004 Elsevier Inc. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | DISPERSION ; ACIDS |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Physical |
| 语种 | 英语 |
| WOS记录号 | WOS:000223070000033 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558408 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Xu, RK |
| 作者单位 | Chinese Acad Sci, Inst Soil Sci, Nanjing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, RK,Li, CB,Ji, GL. Effect of low-molecular-weight organic anions on electrokinetic properties of variable charge soils[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2004,277(1):243-247. |
| APA | Xu, RK,Li, CB,&Ji, GL.(2004).Effect of low-molecular-weight organic anions on electrokinetic properties of variable charge soils.JOURNAL OF COLLOID AND INTERFACE SCIENCE,277(1),243-247. |
| MLA | Xu, RK,et al."Effect of low-molecular-weight organic anions on electrokinetic properties of variable charge soils".JOURNAL OF COLLOID AND INTERFACE SCIENCE 277.1(2004):243-247. |
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来源：南京土壤研究所
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