中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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