| 憎水有机物在土壤有机质中的吸附 |
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| 引用本文： | 陈迪云,尤兴豹.憎水有机物在土壤有机质中的吸附[J].广州大学学报(自然科学版),2004,3(5):400-405. |
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| 作者姓名： | 陈迪云 尤兴豹 |
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| 作者单位： | 广州大学生物与化学工程学院,广东,广州,510405;广州大学生物与化学工程学院,广东,广州,510405 |
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| 基金项目： | 国家自然科学基金项目(40173036)，广东省环保局科技开发项目~~ |
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| 摘 要： | 针对憎水有机物在土壤有机质的非线性吸附行为还不完全清楚的状况,通过研究菲、萘和二甲苯等有机化合物在土壤,以及从其中分离出来的腐殖质、腐殖酸和碱提取后的土壤的吸附行为进行研究,讨论非线性吸附的机制.吸附等温线的非线性程度按如下顺序变化腐殖酸＜土壤＜腐殖质＜碱提出土.脂肪碳富集的腐殖质的等温吸附行为表现出很强的吸附亲和性含量以及高的非线性.文章最后采用了无定型脂肪碳的固结概念模式来解释这些吸附行为.
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| 关 键 词： | 脂肪碳 非线性吸附机制 HOCs |
Sorption of hydrophobic organic compounds by soil organic matter |
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| CHEN Di-yun,YOU Xing-bao.Sorption of hydrophobic organic compounds by soil organic matter[J].Journal og Guangzhou University:Natural Science Edition,2004,3(5):400-405. |
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| Authors: | CHEN Di-yun YOU Xing-bao |
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| Abstract: | There are many studies on sorption behavior of hydrophobic organic compounds (HOCs), but the mechanism for nonlinear sorption isotherm in soil organic matter (SOM) is not thoroughly understood yet. By studying the sorption processes of phenanthrene, naphthalene and o-xylene in a mineral soil, its base-extracted soil (BE), humic acid (HA) and humin, the sorption mechanism of HOCs was discussed in this paper. The isotherm nonlinearity increased in the following order: soil HA
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| Keywords: | aliphatic carbon sorption mechanism HOCs |
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