| 纳米粘土矿物对阿特拉津的吸附-解吸特性研究 |
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| 引用本文： | 汪玉,司友斌.纳米粘土矿物对阿特拉津的吸附-解吸特性研究[J].农业环境科学学报,2009,28(1). |
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| 作者姓名： | 汪玉 司友斌 |
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| 作者单位： | 安徽农业大学资源与环境学院,安徽合肥,230036 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家重点基础研究发展规划(973计划)，安徽省科技攻关计划，安徽省优秀青年科技基金 |
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| 摘 要： | 采用批量平衡实验,研究了纳米粘土矿物与原粘土矿物对除草剂阿特拉津的吸附解吸特性.结果表明,牯土矿物对阿特拉津的吸附-解吸均能用Freundlich方程很好地拟合.随着溶液中阿特拉津浓度的增加,粘土矿物对阿特拉津的吸附量增加;粘土矿物粒径越小,吸附量越大,纳米粘土矿物的吸附量显著大于原粘土矿物.粘土矿物对阿特拉津吸附量大小顺序为:纳米SiO2>纳米蒙脱石>凹凸棒石>蒙脱石>SiO2.粘土矿物对阿特拉津的解吸表现出一定的滞后效应,即粘土矿物吸附的阿特拉津越多,解吸的越少.粘土矿物对阿特拉津的解吸率大小顺序为:SiO2>凹凸棒石>纳米蒙脱石>纳米SiO2>蒙脱石.
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| 关 键 词： | 纳米粘土矿物 阿特拉津 吸附解吸 滞后效应 |
Adsorption and Desorption of Atrazine on Nanoscale Clay Minerals |
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| WANG Yu,SI You-bin.Adsorption and Desorption of Atrazine on Nanoscale Clay Minerals[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2009,28(1). |
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| Authors: | WANG Yu SI You-bin |
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| Institution: | School of Resources and Environment;Anhui Agricultural University;Hefei 230036;China |
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| Abstract: | Adsorption and desorption of atrazine on clay minerals were studied using the batch equilibration technique. Adsorption isotherms of atrazine conformed to the Freundlich equation. Adsorption of atrazine on clay minerals increased with increasing concentration. The smaller the particle size of clay minerals, the more the adsorption of atrazine. The nanoscale clay minerals had higher adsorption capacity for atrazine than those of the corresponding clays. The adsorption capacity of clay minerals for atrazine f... |
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| Keywords: | nanoscale clay minerals atrazine adsorption and desorption hystersis |
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