| 松花江一级阶地包气带岩性特征及其对农药吸附与降解的影响 |
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| 引用本文： | 刘广民,林学钰,董维红,姜桂兰,赵淑洁.松花江一级阶地包气带岩性特征及其对农药吸附与降解的影响[J].吉林大学学报(地球科学版),2004,34(1):125-127. |
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| 作者姓名： | 刘广民 林学钰 董维红 姜桂兰 赵淑洁 |
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| 作者单位： | 吉林大学,化学学院,吉林,长春,130026;哈尔滨工业大学市政环境工程学院,黑龙江,哈尔滨,150090;吉林大学,环境与资源学院,吉林,长春,130026;吉林大学,化学学院,吉林,长春,130026 |
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| 摘 要： | 对松花江一级阶地包气带的岩性特征分析结果表明,三层介质均为砂土,有机质和粘土矿物含量较少,水的渗透系数由袁层到深层显著增大.阿特拉津在三层介质中的吸附系数依次为1.2 mL/g、0.6 mL/g和0.2 mL/g,自然降解半衰期为124 d、153 d和225 d,能够长期残留在包气带中,构成对地下水的威胁.
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| 关 键 词： | 一级阶地 包气带 阿特拉津 吸附 降解 |
| 文章编号： | 1671-5888(2004)01-0125-03 |
| 修稿时间： | 2003年6月30日 |
Lithologic characteristics of the unsaturated zone and its impact on adsorption and degradation of pesticide in the first grade terrace of Songhua River |
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| LIU Guang-min.Lithologic characteristics of the unsaturated zone and its impact on adsorption and degradation of pesticide in the first grade terrace of Songhua River[J].Journal of Jilin Unviersity:Earth Science Edition,2004,34(1):125-127. |
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| Authors: | LIU Guang-min |
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| Institution: | LIU Guang-min~ |
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| Abstract: | The unsaturated zone is divided into three layers in which the media is mainly sandy soil. The amount of organic matter and clay mineral are relatively less. The value of permeability coefficients is getting larger from the surface to the deep layer distinctively. The results of the adsorption and the natural degradation experiments show that the adsorption coefficients of Atrazine in the three layers are 1.2 mL/g, 0.6 mL/g and 0.2 mL/g respectively, and the half-life periods of natural degradation are 124 d, 153 d and 225 d, respectively. The Atrazine can remain in the unsaturated zone for a long time and eventually result in groundwater pollution. |
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| Keywords: | first grade terrace unsaturated zone Atrazine adsorption degradation |
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