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| 温度和水土比对红壤吸附低分子量有机酸的影响 | |
| 引用本文： | 喻艳红,张桃林,李清曼,王兴祥. 温度和水土比对红壤吸附低分子量有机酸的影响[J]. 土壤, 2011, 43(1): 50-55 |
| 作者姓名： | 喻艳红 张桃林 李清曼 王兴祥 |
| 作者单位： | 1. 中国科学院南京土壤研究所,南京210008;中国科学院研究生院,北京100049 2. 中国科学院南京土壤研究所,南京,210008 3. 中国科学院水生生物研究所,武汉,430072 |
| 基金项目： | 中国科学院知识创新工程项目（KZCX2-YW-438和KSCX1-YW-09）资助 |
| 摘 要： | 通过一次平衡法考察了温度和水土比对红壤吸附草酸、柠檬酸、酒石酸和苹果酸的影响。结果表明，有机酸的吸附量、最大吸附量（Sm）及吸附亲和力常数（K）均随温度的升高而增加，随着水土比的增加而降低。温度和水土比变化对有机酸吸附的影响程度因有机酸种类而异，影响程度大小与土壤对有机酸的吸附亲和力（K）大小顺序相反。45℃ 时，土壤对草酸、柠檬酸、酒石酸和苹果酸的吸附量分别是 25℃ 时的 1.19、1.22、1.24 和 1.28 倍；100:1 水土比条件下，草酸、柠檬酸、酒石酸和苹果酸的吸附量分别较 10:1 水土比条件下减少了 48.3%、54.9%、63.5% 和 76.1%。 |
| 关 键 词： | 红壤；低分子量有机酸；吸附；温度；水土比 |
Effects of temperature and solution/soil ratio on adsorption of low molecular weight organic acids in red soil |
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| YU Yan-hong,ZHANG Tao-lin,LI Qing-man,WANG Xing-xiang. Effects of temperature and solution/soil ratio on adsorption of low molecular weight organic acids in red soil[J]. Soils, 2011, 43(1): 50-55 | |
| Authors: | YU Yan-hong ZHANG Tao-lin LI Qing-man WANG Xing-xiang |
| Affiliation: | Institute of Soil Science, Chinese Academy of Sciences |
| Abstract: | This research investigated the effects of temperature and solution/soil ratio on the adsorption of oxalic,citric,tartaric and malic acids in red soil by a batch equilibrium method.The results indicated that the adsorption capacity,the maximum adsorption capacity(Sm) and adsorption affinity constant(K) all increased with the increase of temperature,but decreased with the increase of solution/soil ratio.The effects depended on the kinds of organic acids,and the influencing extent was negative to adsorption af... |
| Keywords: | Red soil Low molecular weight organic acids Adsorption Temperature Solution to soil ratio |
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