Fluorescence spectroscopic characterization of DOM fractions isolated from a filtered river water after ozonation and catalytic ozonation
文献类型：期刊论文
| 作者 | Zhang, Tao ; Lu, Jinfeng ; Ma, Jun ; Qiang, Zhimin |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2008-03 |
| 卷号 | 71期号:5页码:911-921 |
| 关键词 | fluorescence catalytic ozonation natural organic matter goethite cerium dioxide |
| 英文摘要 | Fluorescence spectra were applied to investigate the structural changes of four dominant dissolved natural organic matter (DOM) fractions of a filtered river water before and after ozonation and catalytic ozonation. The ozonation and catalytic ozonation with synthetic goethite (FeOOH) and cerium dioxide (CeO2) were carried out under normal conditions, i.e. pH 7, reaction time of 10 min, and ozone/DOC ratio of about 1. The fluorescence spectra were recorded at both excitation-emission matrix (EEM) and synchronous scanning modes. EEM results reveal that ozonation of these DOM fractions causes a significant decrease of the aromaticity of humic-like structures and an increase of electron withdrawing groups, e.g., carboxylic groups. The catalysts can further improve the destruction of the humic-like structures in catalytic ozonation. Synchronous spectra reveal that ozonation of hydrophobic acid and hydrophilic acid (HIA) yields a significant amount of by-products with low aromaticity and low molecular weight. Catalytic ozonation enhances substantially the formation of these by-products from HIA and improves the destruction of highly polycyclic aromatic structures for all examined DOM fractions. (C) 2007 Published by Elsevier Ltd. |
| WOS记录号 | WOS:000254827000013 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22245]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Tao,Lu, Jinfeng,Ma, Jun,et al. Fluorescence spectroscopic characterization of DOM fractions isolated from a filtered river water after ozonation and catalytic ozonation[J]. CHEMOSPHERE,2008,71(5):911-921. |
| APA | Zhang, Tao,Lu, Jinfeng,Ma, Jun,&Qiang, Zhimin.(2008).Fluorescence spectroscopic characterization of DOM fractions isolated from a filtered river water after ozonation and catalytic ozonation.CHEMOSPHERE,71(5),911-921. |
| MLA | Zhang, Tao,et al."Fluorescence spectroscopic characterization of DOM fractions isolated from a filtered river water after ozonation and catalytic ozonation".CHEMOSPHERE 71.5(2008):911-921. |
入库方式： OAI收割
来源：生态环境研究中心
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