| 林丹的吸附解吸行为对其沉积物基准的影响 |
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| 引用本文： | 张子种,常春,陈威,祝凌燕.林丹的吸附解吸行为对其沉积物基准的影响[J].中国环境科学,2009,29(12):1301-1305. |
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| 作者姓名： | 张子种 常春 陈威 祝凌燕 |
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| 作者单位： | 南开大学环境科学与工程学院,教育部环境污染过程与基准重点实验室,天津市城市生态环境修复与污染控制重点实验室,天津,300071 |
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| 基金项目： | 天津市科学技术委员会资助项目，国家水体污染控制专项基金，"十一五"国家科技支撑计划，教育部新世纪人才 |
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| 摘 要： | 研究了林丹在3种沉积物上的吸附/解吸行为.结果表明,在3种沉积物上的吸附等温线都符合Freundlich模型,其吸附性能受有机碳含量和颗粒分布的影响.而解吸等温线明显地偏离吸附等温线,存在显著的解吸滞后现象,解吸用二元平衡解吸(DED)模型进行拟合,效果良好.解吸不可逆程度随着沉积物中林丹初始浓度增大而增大.由DED模型推算的沉积物基准值比用线性模型推算的基准值高46倍以上.
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| 关 键 词： | 吸附 解吸 林丹 沉积物基准 |
| 收稿时间： | 2009-04-07; |
Impact of sorption and desorption behaviors of lindane on its sediment quality criteria |
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| ZHANG Zi-Zhong,CHANG Chun,CHEN Wei,ZHU Ling-Yan.Impact of sorption and desorption behaviors of lindane on its sediment quality criteria[J].China Environmental Science,2009,29(12):1301-1305. |
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| Authors: | ZHANG Zi-Zhong CHANG Chun CHEN Wei ZHU Ling-Yan |
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| Abstract: | The sorption and desorption of lindane on three sediments were investigated. The sorption isotherms fitted Freundlich model very well. The sorption capacity of sediment was affected by the organic carbon fraction and particle distribution. The desorption isotherms remarkably deviated from the sorption isotherms and displayed a resistant desorption. The desorption results fitted dual equilibrium desorption (DED) model very well. The desorption irreversibility of lindane in sediment increased with its initial concentration in the sediment. The sediment quality criteria (SQC) derived from DED model was 46 times higher than what from linear model. |
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| Keywords: | sorption desorption lindane sediment criteria |
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