| 土壤胡敏酸对菲的吸附特征研究 |
| |
| 引用本文： | 何孟常,邓焕哲,李杏茹,云影.土壤胡敏酸对菲的吸附特征研究[J].环境科学学报,2005,25(7):982-988. |
| |
| 作者姓名： | 何孟常 邓焕哲 李杏茹 云影 |
| |
| 作者单位： | 北京师范大学水环境模拟国家重点实验室/环境学院,北京,100875;北京师范大学水环境模拟国家重点实验室/环境学院,北京,100875;北京师范大学水环境模拟国家重点实验室/环境学院,北京,100875;北京师范大学水环境模拟国家重点实验室/环境学院,北京,100875 |
| |
| 基金项目： | 国家自然科学基金(No.20277002)，国家重点基础研究项目(No.2003CB415002)，北京师范大学创新研究群体发展计划~~ |
| |
| 摘 要： | 通过模拟实验研究了不同来源的7种土壤样品及从中提取的胡敏酸(HA)对菲的吸附特征，应用元素分析仪和固相核磁共振光谱(CP／MAS^13C-NMR)对7种土壤样品中的胡敏酸进行了表征并计算其芳香度和脂化度．实验结果表明，不同来源土壤对菲吸附的Freundllich吸附系数(Kt)不同，其有机碳标化的分配系数(K IM)也存在一定的差异．另外，由于不同来源土壤中HA的结构和组成差异明显，土壤HA对疏水性有机污染物的吸附规律也表现出不同的特征．土壤中HA对菲吸附过程的有机碳标化的分配系数(K oc)与土壤HA的芳香度具有正相关性．
|
| 关 键 词： | 菲 吸附 土壤 胡敏酸 芳香度 脂化度 |
| 文章编号： | 0253-2468(2005)07-0982-07 |
| 收稿时间： | 2004/12/3 0:00:00 |
| 修稿时间： | 2004年12月3日 |
Sorption of phenanthrene by humic acids from different soils |
| |
| HE Mengchang,DENG Huanzhe,LI Xingru and YUN Ying.Sorption of phenanthrene by humic acids from different soils[J].Acta Scientiae Circumstantiae,2005,25(7):982-988. |
| |
| Authors: | HE Mengchang DENG Huanzhe LI Xingru and YUN Ying |
| |
| Affiliation: | State Key Laboratory of Water Environment Simulation / School of Environment, Beijing Normal University, Beijing 100875, P.R. China,State Key Laboratory of Water Environment Simulation / School of Environment, Beijing Normal University, Beijing 100875, P.R. China,State Key Laboratory of Water Environment Simulation / School of Environment, Beijing Normal University, Beijing 100875, P.R. China and State Key Laboratory of Water Environment Simulation / School of Environment, Beijing Normal University, Beijing 100875, P.R. China |
| |
| Abstract: | Sorption of phenanthrene on seven soil samples was examined in batch sorption experiments. The element analysis and solid-state CP/MAS ()~(13)C_-NMR were used to obtain the structural and compositional information of the humic acids (HA) from the seven different soils. Then the aromaticity and aliphaticity of the HA was calculated. The result showed that the Freundlich sorptive coefficients (K_f) of different soils on phenanthrene were different, and the organic carbon-normalized partition coefficient (K_(oc)) of phenanthrene in different soils was also different. Furthermore, due to the difference of composition and structure of HA from different areas, they showed different sorption characteristic on hydrophobic organic pollutants. A positive correlation was observed between the aromaticity of the HA and the organic carbon-normalized partition coefficient (K_(oc)) of phenanthrene on the HA. |
| |
| Keywords: | phenanthrene sorption soil humic acids aromaticity aliphaticity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《环境科学学报》浏览原始摘要信息 |
|
点击此处可从《环境科学学报》下载全文 |
|
