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首页> 外文会议>Chemistry for the protection of the environment 3 >The Role of Citric, Lactic and Oxalic Acids in Aluminum Mobilization From Some Polish and Chinese Agicultural Soils
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The Role of Citric, Lactic and Oxalic Acids in Aluminum Mobilization From Some Polish and Chinese Agicultural Soils

机译：柠檬酸，乳酸和草酸在波兰和中国农业土壤中铝动员中的作用

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The release of organic acids from plant roots and soil microorganisms can greatly increase alumnum solubility. Oxalic and cirtrci acids have been identified as the major organic acids in soil solutions. Therefore, the objetives ofthis study were to examine the role of ocmplexing and non-complexing organic acids in aluminum mobilzation in different agricultural soil types form poland and china. The ocncentration of labile aluminum in soils increases with the input of organic acid concentrations. According to batch experiments, the mobilization of Al in different soil by organic acids is as follows: ammonum fertilized brown soil > ammonium fertilized red soil > unfertilized brown soil > peat soil> calcareous soil .Aluminum mobilization is significantly influence by gricultrual management. A lower amount of labile aluminum when usinga non-complexin lactc acid illustrate the important role of complexation relative to only the H sup + ions released from the disscoiation of carboxylic group in aluminum mobilization .Concentrations of Al mobilized by oxalic acid are 1.5-2.0 times and 8.7-22 times higher than mobilized by citric and lactic acids, respectively. Aluminum speciation in extracted soil solution using complexing organic acid shows the predominance of organically bound aluminum. WHen treating hte sample with a on-complexing orgainc acid, the inorganic AL species account for more than 97
机译：从植物根和土壤微生物中释放出有机酸可大大增加铝的溶解度。草酸和环酸已被确定为土壤溶液中的主要有机酸。因此，本研究的目的是检验在波兰和中国的不同农业土壤类型中，络合和非络合有机酸在铝动员中的作用。土壤中不稳定铝的浓度随有机酸浓度的增加而增加。根据分批实验，有机酸在不同土壤中对铝的迁移如下：铵肥棕壤>铵肥红壤>棕壤>泥炭土>石灰质土壤。当使用非络合物乳酸时，较少量的不稳定铝说明络合相对于仅羧基解离释放的H sup +离子在铝动员中的重要作用。草酸动员的Al的浓度是1.5-2.0倍分别是柠檬酸和乳酸动员的8.7和22倍。使用络合有机酸的提取土壤溶液中的铝形态显示出有机结合铝的优势。在使用复杂的有机酸处理样品时，无机AL种类占97种以上

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