温度和水土比对红壤吸附低分子量有机酸的影响
Effects of Temperature and Solution/Soil Ratio on Adsorption of Low Molecular Weight Organic Acids in Red Soil
查看参考文献23篇
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文摘
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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% |
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其他语种文摘
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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 affinity constant(K).The adsorption capacities of oxalic, citric, tartaric and malic acids at 45℃ was 1.19,1.22,1.24 and 1.28 times higher than those at 25℃, respectively. The adsorption capacities of oxalic, citric, tartaric and malic acids at 100:1 solution/soil reduced by 48.3%,54.9%,63.5% and 76.1% compared to those at 10:1 solution/soil, respectively |
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来源
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土壤
,2011,43(1):50-55 【核心库】
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关键词
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红壤
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低分子量有机酸
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吸附
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温度
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水土比
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地址
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1.
中国科学院南京土壤研究所, 南京, 210008
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中国科学院水生生物研究所, 武汉, 430072
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-9829 |
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学科
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农业基础科学 |
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基金
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中国科学院知识创新工程项目
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文献收藏号
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CSCD:4152627
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参考文献 共
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