| Photochemical degradation of environmentally persistent perfluorooctanoic acid （PFOA） in the presence of Fe（Ⅲ） |
| |
| 作者姓名： | Yuan Wang~ |
| |
| 作者单位： | a State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085, China;b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;c Department of Environment Science and Engineering, Tsinghua University, Beijing 100084, China |
| |
| 基金项目： | This work was financially supported by the National Natural Science Foundation of China (No. 20577026) and National Basic Research Program of China (No. 2007CB613303). |
| |
| 摘 要： | Environmentally persistent and bioaccumulative perfluorooctanic acid （PFOA） was difficult to be decomposed under the irradiation of 254 nm UV light. However, in the presence of 80μmol/L Fe（Ⅲ）, 80% of PFOA with initial concentration of 48μmol/L （20 mg/L） was effectively degraded and 47.8% of fluorine atoms in PFOA molecule were transformed into inorganic fluoride ion after 4 h reaction. Shorter chain perfluorocarboxylic acids bearing C3-C7 and fluoride ion were detected and identified by LC/MS and IC as the degradation products in the aqueous solution. It was proposed that complexes of PFOA with Fe（Ⅲ） initiated degradation of PFOA irradiated with 254 nm UV light.
|
| 关 键 词： | 光化学 UV光 退化现象 化学实验 |
Photochemical degradation of environmentally persistent perfluorooctanoic acid （PFOA） in the presence of Fe（Ⅲ） |
| |
| Yuan Wang.Photochemical degradation of environmentally persistent perfluorooctanoic acid （PFOA） in the presence of Fe（Ⅲ）[J].Chinese Chemical Letters,2008,19(3):371-374. |
| |
| Authors: | Yuan Wang Peng Yi Zhang Gang pan Hao chen |
| |
| Institution: | a State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085, China;b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;c Department of Environment Science and Engineering, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | Environmentally persistent and bioaccumulative perfluorooctanic acid (PFOA) was difficult to be decomposed under the irradiation of 254 nm UV light. However, in the presence of 80 μmol/L Fe (III), 80%of PFOAwith initial concentration of 48 μmol/L (20 mg/L) was effectively degraded and 47.8% of fluorine atoms in PFOA molecule were transformed into inorganic fluoride ion after 4 h reaction. Shorter chain perfluorocarboxylic acids bearing C3-C7 and fluoride ion were detected and identified by LC/MS and IC as the degradation products in the aqueous solution. It was proposed that complexes of PFOA with Fe (III) initiated degradation of PFOA irradiated with 254 nm UV light. |
| |
| Keywords: | Perfluorooctanoic acid Iron（Ⅲ） Photochemical degradation 254 nm UV light |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国化学快报》浏览原始摘要信息 |
| 点击此处可从《中国化学快报》下载免费的PDF全文 |
