| Effect of low-molecular-weight organic acids on Cl- adsorption by variable charge soils |
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| 引用本文： | XU Ren-Kou,YANG Ma-Li,WANG Qiang-Sheng,JI Guo-Liang. Effect of low-molecular-weight organic acids on Cl- adsorption by variable charge soils[J]. 土壤圈, 2004, 14(3): 405-408 |
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| 作者姓名： | XU Ren-Kou YANG Ma-Li WANG Qiang-Sheng JI Guo-Liang |
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| 作者单位： | [1]InstituteofSoilScience,ChineseAcademyofSciences,Nanjing210008（China） [2]CollegeofAgronomy,NanjingAgriculturalUniversity,Nanjing210095（China） |
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| 基金项目： | *1Project supported by the Knowledge Innovation Program Foundation of the Chinese Academy of Sciences (No.ISSASIP0108) and the National Natural Science Foundation of China (No.40271062). |
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| 摘 要： | Low-molecular-weight (LMW) organic acids exist widely in soils and have been implicated in many soil processes.The objective of the present paper was to evaluate effect of two LMW organic acids, citric acid and oxalic acid, on Cl^- adsorption by three variable charge soils, a latosol, a lateritic red soil and a red soil, using a batch method. The results showed that the presence of citric acid and oxalic acid led to a decrease in Cl- adsorption with larger decreases for citric acid. Among the different soils Cl- adsorption in the lateritic red soil and the red soil was more affected by both the LMW organic acids than that in the latosol.
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| 关 键 词： | 氯离子吸附 有机酸 土壤改良 酸性土壤 静电吸引 |
Effect of low-molecular-weight organic acids on Cl- adsorption by variable charge soils |
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| XU Ren-Kou,YANG Ma-Li,WANG Qiang-Sheng and JI Guo-Liang. Effect of low-molecular-weight organic acids on Cl- adsorption by variable charge soils[J]. Pedosphere, 2004, 14(3): 405-408 |
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| Authors: | XU Ren-Kou YANG Ma-Li WANG Qiang-Sheng JI Guo-Liang |
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| Affiliation: | Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: rkxu@issas.ac.cn;College of Agronomy, Nanjing Agricultural University, Nanjing 210095 (China);College of Agronomy, Nanjing Agricultural University, Nanjing 210095 (China);Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: rkxu@issas.ac.cn |
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| Abstract: | Low-molecular-weight (LMW) organic acids exist widely in soils and have been implicated in many soil processes.The objective of the present paper was to evaluate effect of two LMW organic acids, citric acid and oxalic acid, on Cl^- adsorption by three variable charge soils, a latosol, a lateritic red soil and a red soil, using a batch method. The results showed that the presence of citric acid and oxalic acid led to a decrease in Cl- adsorption with larger decreases for citric acid. Among the different soils Cl- adsorption in the lateritic red soil and the red soil was more affected by both the LMW organic acids than that in the latosol. |
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| Keywords: | Cl- adsorption organic acids variable charge soils |
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