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胡敏酸在土壤中的迁移
Authors
邵明安
魏孝荣
Publication date
1 January 2007
Publisher
Abstract
研究了不同条件下胡敏酸在土壤中的迁移过程.结果表明,其迁移过程表现出较大的差异,在溶液pH值、胡敏酸浓度和溶液流速均较高时,胡敏酸迁移的阻滞因子和在土壤中的吸附系数均较低,有利于胡敏酸在土壤中的迁移;在溶液pH值、胡敏酸浓度和溶液流速均较低时,土壤对胡敏酸迁移的阻滞作用较大.胡敏酸的迁移还与土壤性质有关,土壤黏粒含量和阳离子交换量越高,胡敏酸在土壤中吸附的越多,越不利于迁移.在土壤中的吸附是胡敏酸迁移的主要控制因素,在预测胡敏酸在水土环境中迁移时,应该充分考虑不同条件下胡敏酸在不同性质土壤中的吸附
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018