Molecular characterization of transformation and halogenation of natural organic matter during the UV/chlorine AOP using FT-ICR mass spectrometry
文献类型：期刊论文
| 作者 | Ruan, Xiaoxue; Xiang, Yingying; Shang, Chii; Cheng, Shuangshuang; Liu, Jingfu; Hao, Zhineng ; Yang, Xin
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2021-04 |
| 卷号 | 102页码:24-36 |
| 关键词 | UV/chlorine AOP Disinfection byproducts (DBPs) Natural organic matter (NOM) FT-ICR MS Water treatment |
| ISSN号 | 1001-0742 |
| 英文摘要 | UV/chlorine process, as an emerging advanced oxidation process (AOP), was effective for removing micro-pollutants via various reactive radicals, but it also led to the changes of natural organic matter (NOM) and formation of disinfection byproducts (DBPs). By using negative ion electrospray ionization coupled with Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS), the transformation of Suwannee River NOM (SRNOM) and the formation of chlorinated DBPs (Cl-DBPs) in the UV/chlorine AOP and subsequent post-chlorination were tracked and compared with dark chlorination. In comparison to dark chlorination, the involvement of ClO center dot, Cl-center dot, and HO center dot in the UV/chlorine AOP promoted the transformation of NOM by removing the compounds owning higher aromaticity (AI(mod)) value and DBE (double-bond equivalence)/C ratio and causing the decrease in the proportion of aromatic compounds. Meanwhile, more compounds which contained only C, H, O, N atoms (CHON) were observed after the UV/chlorine AOP compared with dark chlorination via photolysis of organic chloramines or radical reactions. A total of 833 compounds contained C, H, O, Cl atoms (CHOCl) were observed after the UV/chlorine AOP, higher than 789 CHOCl compounds in dark chlorination, and one-chlorine-containing components were the dominant species. The different products from chlorine substitution reactions (SR) and addition reactions (AR) suggested that SR often occurred in the precursors owning higher H/C ratio and AR often occurred in the precursors owning higher aromaticity. Post-chlorination further caused the cleavages of NOM structures into small molecular weight compounds, removed CHON compounds and enhanced the formation of Cl-DBPs. The results provide information about NOM transformation and Cl-DBPs formation at molecular levels in the UV/chlorine AOP. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45785]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Hong Kong Branch, Chinese Natl Engn Res Ctr Control & Treatment Hea, Hong Kong, Peoples R China 2.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangdong Prov Key Lab Environm Pollut Control &, Guangzhou 510275, Peoples R China 3.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ruan, Xiaoxue,Xiang, Yingying,Shang, Chii,et al. Molecular characterization of transformation and halogenation of natural organic matter during the UV/chlorine AOP using FT-ICR mass spectrometry[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,102:24-36. |
| APA | Ruan, Xiaoxue.,Xiang, Yingying.,Shang, Chii.,Cheng, Shuangshuang.,Liu, Jingfu.,...&Yang, Xin.(2021).Molecular characterization of transformation and halogenation of natural organic matter during the UV/chlorine AOP using FT-ICR mass spectrometry.JOURNAL OF ENVIRONMENTAL SCIENCES,102,24-36. |
| MLA | Ruan, Xiaoxue,et al."Molecular characterization of transformation and halogenation of natural organic matter during the UV/chlorine AOP using FT-ICR mass spectrometry".JOURNAL OF ENVIRONMENTAL SCIENCES 102(2021):24-36. |
入库方式： OAI收割
来源：生态环境研究中心
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