| 不同粒径沉积物对1,2,4,5-四氯苯的吸附/解吸特性 |
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| 引用本文： | 舒月红,黄小仁,贾晓珊,吴宏海.不同粒径沉积物对1,2,4,5-四氯苯的吸附/解吸特性[J].环境化学,2009,28(2). |
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| 作者姓名： | 舒月红 黄小仁 贾晓珊 吴宏海 |
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| 作者单位： | 1. 华南师范大学化学与环境学院,广州,510635
2. 中山大学环境科学与工程学院,广州,510275 |
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| 摘 要： | 采用静态吸附实验,研究不同粒径沉积物的基本性质及其对1,2,4,5-四氯苯吸附/解吸性能的影响.结果表明,不同粒径沉积物所含天然有机质(NOM)质和量的不同,导致其对1,2,4,5-四氯苯吸附性能的不同.颗粒最细的沉积物因其主要结合聚合度较低的无定型腐殖物质,导致1,2,4,5-四氯苯吸附等温线的非线性程度最低,在沉积物上的吸附亲和力和吸附.解吸滞后现象也最弱.而颗粒最粗的沉积物因为含有一些煤炭和木炭等高比表面积的碳黑类物质,NOM聚合度较高,导致1,2,4,5-四氯苯吸附等温线的非线性程度最高,在沉积物上的吸附亲和力和吸附-解吸滞后现象也最强.而粒径中等的沉积物本身的性质和吸附性能介于颗粒最粗和最细的两种组分之间.
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| 关 键 词： | 沉积物 粒径 1 2 4 5-四氯苯 吸附/解吸 |
SORPTION/DESORPTION CHARACTERISTIC OF 1,2,4,5-TETRACHLOBENZENE ON SEDIMENT OF DIFFERENT GRAIN DIAMETER SIZES |
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| SHU Yue-hong,HUANG Xiao-ren,JIA Xiao-shan,WU Hong-hai.SORPTION/DESORPTION CHARACTERISTIC OF 1,2,4,5-TETRACHLOBENZENE ON SEDIMENT OF DIFFERENT GRAIN DIAMETER SIZES[J].Environmental Chemistry,2009,28(2). |
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| Authors: | SHU Yue-hong HUANG Xiao-ren JIA Xiao-shan WU Hong-hai |
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| Institution: | 1School of Chemistry and Environment;South China Normal University;Guangzhou;510006;China;2School of Environmental Science and Engineering;Sun Yat-Sen University;510275;China |
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| Abstract: | The sorption experiments were conducted to study the influence of different sediment grain diameter sizes on the sorption/desorption of 1,2,4,5-tetrachlorobenzene.The results showed that the subsamples of sediment with different grain diameter sizes contained different types of NOM,which resulted in dissimilar sorption/desorption characteristics of 1,2,4,5-tetrachlorobenzene on them.The subsample with the largest grain size contained predominately coaly,particular organic matter of the highest condensed NOM... |
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| Keywords: | sediment grain diameter size 1 2 4 5-tetrachlorobenzene sorption/desorption |
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