Dissolution of aluminum in variably charged soils as affected by low-molecular-weight organic acids
文献类型：期刊论文
| 作者 | Li, JY; Xu, RK; Ji, GL |
| 刊名 | Pedosphere
 |
| 出版日期 | 2005-08-01 |
| 卷号 | 15期号:4页码:484-490 |
| 关键词 | Aluminum dissolution Low-molecular-weight organic acid Variably charged soil |
| ISSN号 | 1002-0160 |
| 通讯作者 | Li, jy(jyli@issas.ac.cn) |
| 英文摘要 | Low-molecular-weight (lmw) organic acids exist widely in soils and play an important role in soil processes such as mineral weathering, nutrient mobilization and al detoxification. in this research, a batch experiment was conducted to examine the effects of lmw organic acids on dissolution of aluminum in two variably charged soils, an ultisol and an oxisol. the results showed that the lmw organic acids enhanced the dissolution of al in the two investigated soils in the following order: citric > oxalic > malonic > malic > tartaric > salicylic > lactic > maleic. this was generally in agreement with the magnitude of the stability constants for the al-organic complexes. the effects of lmw organic acids on al dissolution were greater in the ultisol than in the oxisol as compared to their controls. also, the accelerating effects of citric and oxalic acids on dissolution of al increased with an increase in ph, while the effects of lactic and salicylic acids decreased. additionally, when the organic acid concentration was less than 0.2 mmol l-1, the dissolution of al changed little with increase in acid concentration. however, when the organic acid concentration was greater than 0.2 mmol l-1, the dissolution of al increased with increase in acid concentration. in addition to the acid first dissociation constant and stability constant of al-organic complexes, the promoting effects of lmw organic acids on dissolution of al were also related to their sorption-desorption equilibrium in the soils. |
| WOS关键词 | KINETICS ; PH ; PHOSPHORUS ; HYDROXIDES ; RELEASE ; ANIONS |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000230707200010 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378040 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, JY |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, JY,Xu, RK,Ji, GL. Dissolution of aluminum in variably charged soils as affected by low-molecular-weight organic acids[J]. Pedosphere,2005,15(4):484-490. |
| APA | Li, JY,Xu, RK,&Ji, GL.(2005).Dissolution of aluminum in variably charged soils as affected by low-molecular-weight organic acids.Pedosphere,15(4),484-490. |
| MLA | Li, JY,et al."Dissolution of aluminum in variably charged soils as affected by low-molecular-weight organic acids".Pedosphere 15.4(2005):484-490. |
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来源：中国科学院大学
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