| 泥沙颗粒表面磷吸附分布的实验研究 |
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| 引用本文： | 陈明洪,方红卫,陈志和. 泥沙颗粒表面磷吸附分布的实验研究[J]. 泥沙研究, 2009, 0(4) |
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| 作者姓名： | 陈明洪 方红卫 陈志和 |
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| 作者单位： | 中国农业大学水利与土木工程学院,北京,100083;清华大学水利系水沙科学与水利水电工程国家重点实验室,北京,100084;中山大学水资源与环境系水资源与环境研究中心,广东,广州,510275 |
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| 基金项目： | 国家自然科学基金(10872110,50325929) |
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| 摘 要： | 泥沙与污染物的作用过程十分复杂,传统吸附理论主要从总量上对这一过程进行描述。本文借助扫描电子显微镜(SEM)等手段从微观尺度出发,研究磷污染物在颗粒表面的吸附现象,并通过图像处理和微分几何方法分析磷在泥沙表面的分布规律。结果表明在颗粒表面的鞍部、凹地和凸起等地方存在较多活性吸附位。在特定水环境中,这些吸附位对磷的弱酸根配体及其他离子在颗粒表面上竞争吸附起着非常重要的作用。
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| 关 键 词： | SEM 吸附 元素分布 微表面 络合 |
Experiment of phosphorus distribution on sediment surface |
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| CHEN Ming-hong,FANG Hong-wei,CHEN Zhi-he. Experiment of phosphorus distribution on sediment surface[J]. Journal of Sediment Research, 2009, 0(4) |
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| Authors: | CHEN Ming-hong FANG Hong-wei CHEN Zhi-he |
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| Affiliation: | 1.College of Water Conservancy and Civil Engineering;China Agricultural University;Beijing 100083;China;2.Dept.of Hydraulic Engineering;State Key Laboratory of Hydroscience and Engineering;Tsinghua University;Beijing 100084;3.Dept.of Water Resources and Environment;Sun Yat-sen University;Guangzhou 510275;China |
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| Abstract: | The interactions between sands and contamination are quite complex.Traditional adsorption theory mainly shows the quantity results based on the distribution between the liquid phase and solid phase.In this paper,high resolution scanning electron microscope(SEM) is used to study the phenomenon of phosphoric pollutant adsorbed by sand particles from microcosmic view.Image analysis process methods and differential geometry theory are used to address the distribution law of phosphorus on sand particle surface.I... |
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| Keywords: | SEM adsorption element distribution micro-surface complexation |
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