UV/chlorine and chlorination of effluent organic matter fractions: Tracing nitrogenous DBPs using FT-ICR mass spectrometry
文献类型：期刊论文
| 作者 | Wang, Yuru6; Xiang, Yingying4,5; Marques dos Santos, Mauricius3; Wei, Gaoling2; Jiang, Bin1; Snyder, Shane3; Shang, Chii4; Croué, Jean-Philippe5 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2023 |
| 卷号 | 231页码:119646 |
| 关键词 | WASTE-WATER TREATMENT DRINKING-WATER MOLECULAR CHARACTERIZATION RAW WATER N-DBPS DISINFECTION TOXICITY TRANSFORMATION OXIDATION PRODUCTS |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2023.119646 |
| 英文摘要 | UV/chlorine process is a promising advanced treatment to eliminate pathogen and remove refractory micropollutants for reclamation of municipal secondary effluent. However, effluent organic matter (EfOM) featuring high organic nitrogen content serves as a potential precursor for nitrogenous disinfection byproducts (N-DBPs) of health concern. The molecular-level alteration of a hydrophobic (HPO) EfOM fraction and a transphilic (TPI) EfOM fraction isolated from the same municipal effluent and the formation of N-DBPs in the UV/chlorine were tracked by ultrahigh-resolution mass spectrometry. Compared with chlorination, UV/chlorine induced a significantly greater modification on the molecular composition of EfOM and resulted in formation of unique formulae and chlorinated molecules with higher degree of oxidation, lower aromaticity, and less carbon number due to the involvement of reactive radical species. For both EfOM fractions, UV/chlorine formed more diverse DBPs with higher intensity and Cl-incorporation than chlorination. The TPI fraction of EfOM characterized by higher O/C and N/C ratios generated more N-DBPs with higher intensity clustered in the high O/C region than the HPO fraction of EfOM by both UV/chlorine and chlorination. Totally, 207 and 117 nitrogen-containing chlorinated formulae were recorded after UV/chlorine treatment of TPI and HPO, respectively. Precursor tracking found a greater number of DBPs were originated from raw EfOM through electrophilic substitution pathway rather than chlorine addition. Toxicity bioassays demonstrated that DBPs can trigger oxidative stress-induced DNA damage, while HPO fraction of EfOM dominated the induction of cytotoxicity. However, no correlation could be established between the diversity/abundance of N-DBPs and the level of DNA damage. A total of 22 DBPs with a significant rank correlation with DNA damage were identified, while C8H6O5NCl was found as the N-DBP with the strongest correlation. The potential toxic chlorine-containing formula with the most abundant intensity was assigned to C5HO3Cl3. This study suggests that the character and transformation of EfOM and associated toxicity is critical to evaluate the UV/chlorine process toward practical application. ? 2023 Elsevier Ltd |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000926576000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80218]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 作者单位 | 1.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China 2.National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou; 510650, China 3.Nanyang Environment & Water Research Institute (NEWRI), Nanyang Technological University, Singapore 4.Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China 5.Institut de Chimie des Milieux et des Matériaux IC2MP UMR 7285 CNRS, Université de Poitiers, France 6.Department of Environmental Science, School of Geography and Tourism, Shaanxi Normal University, Xi'an; 710119, China |
| 推荐引用方式 GB/T 7714 | Wang, Yuru,Xiang, Yingying,Marques dos Santos, Mauricius,et al. UV/chlorine and chlorination of effluent organic matter fractions: Tracing nitrogenous DBPs using FT-ICR mass spectrometry[J]. WATER RESEARCH,2023,231:119646. |
| APA | Wang, Yuru.,Xiang, Yingying.,Marques dos Santos, Mauricius.,Wei, Gaoling.,Jiang, Bin.,...&Croué, Jean-Philippe.(2023).UV/chlorine and chlorination of effluent organic matter fractions: Tracing nitrogenous DBPs using FT-ICR mass spectrometry.WATER RESEARCH,231,119646. |
| MLA | Wang, Yuru,et al."UV/chlorine and chlorination of effluent organic matter fractions: Tracing nitrogenous DBPs using FT-ICR mass spectrometry".WATER RESEARCH 231(2023):119646. |
入库方式： OAI收割
来源：广州地球化学研究所
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