Kinetics and mechanisms of the formation of chlorinated and oxygenated polycyclic aromatic hydrocarbons during chlorination
文献类型：期刊论文
| 作者 | Wei, Zongsu; Wang, Donghong ; Wang, Zijian; Li, Qiang; Fu, Thomas; Spinney, Richard; Dionysiou, Dionysios D.; Xiao, Ruiyang; Xu, Xiong
|
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 351页码:248-257 |
| ISSN号 | 1385-8947 |
| 关键词 | Disinfection Chlorinated PAH Oxygenated PAH Electronic structure theory "Tailor-made" reference compounds |
| 文献子类 | Article |
| 英文摘要 | Chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs) as disinfection products for source waters containing PAHs have raised environmental concern due to their dioxin-like toxicity and potential hazardous effect on human health. In this study, we investigated the reactivity and transformation product distribution of eight environmentally relevant PAHs, namely, naphthalene (Nap), acenaphthylene (Acy), acenaphthene (Ace), fluorene (Fl), phenanthrene (Phe), anthracene (Ant), fluoranthene (Flura) and pyrene (Py), during chlorination. Our results showed that Acy, Ant, Ace, and Py exhibited higher reactivity than Nap, Fl, Phe, and Flura, and their reactivities were reasonably related to their chemical hardness. Transformation products such as chlorinated and oxygenated PAHs were first predicted by electronic structure theory, then qualitatively identified by comprehensive two dimensional gas chromatography-quadrupole mass spectrometry technique, and finally quantitatively confirmed by the "tailor-made" reference compounds we synthesized. Ace and Py were found to be the major precursors of Cl-PAHs, and their chlorination mechanisms were elucidated based on the observational evidence for their mass balance. However, Acy and Ant mainly produced less toxic oxygenated PAHs. PAHs that tend to generate oxygenated transformation products seem to manifest higher reactivity than those form Cl-PAHs due to different reaction mechanisms: single electron transfer followed by a nucleophilic addition for oxygenation vs. electrophilic attack for chlorination. This study provides a fundamental mechanistic basis for better understanding of chlorination product formation process, and guides application of chlorination technology. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41382]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Wei, Zongsu,Wang, Donghong,Wang, Zijian,et al. Kinetics and mechanisms of the formation of chlorinated and oxygenated polycyclic aromatic hydrocarbons during chlorination[J]. CHEMICAL ENGINEERING JOURNAL,2018,351:248-257. |
| APA | Wei, Zongsu.,Wang, Donghong.,Wang, Zijian.,Li, Qiang.,Fu, Thomas.,...&Xu, Xiong.(2018).Kinetics and mechanisms of the formation of chlorinated and oxygenated polycyclic aromatic hydrocarbons during chlorination.CHEMICAL ENGINEERING JOURNAL,351,248-257. |
| MLA | Wei, Zongsu,et al."Kinetics and mechanisms of the formation of chlorinated and oxygenated polycyclic aromatic hydrocarbons during chlorination".CHEMICAL ENGINEERING JOURNAL 351(2018):248-257. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。