Photoinduced release of odorous volatile organic compounds from aqueous pollutants: The role of reactive oxygen species in increasing risk during cross-media transformation
文献类型：期刊论文
| 作者 | Lin, Jingyi1,2; Zhao, He1; Cao, Hongbin1; Zhao, Yuehong1,3; Chen, Chuncheng2,4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-05-20 |
| 卷号 | 822页码:8 |
| 关键词 | Photochemistry Volatile organic compounds (VOCs) Reactive oxygen species (ROS) Cross-media pollution Benzyl alcohol |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2022.153397 |
| 英文摘要 | Photoinduced volatile organic compounds (VOCs) release from fatty alcohols at the air-water interface, has attracted considerable attention. This paper comprehensively explores the release of odorous VOCs from aqueous micropollutants under photoirradiation, especially in terms of the important role of the reactive oxygen species (ROS) in increased risk by cross-media transformation. The formation and distribution of photoinduced VOCs produced by aqueous benzyl alcohol (BzOH), a common ingredient in personal care products, were monitored in situ by online gas chromatography equipped with mass spectrometry and flame ionization detector (GC-MS/FID). The photoreaction of BzOH followed first-order kinetics with a rate constant of 0.0158/min under air. After 180 min of ultraviolet irradiation, the accumulated output of the gas-phase products benzene and benzaldehyde (BA) reached 3.8 mu mol and 2.6 mu mol respectively, being approximately 10 times that under nitrogen. According to electron paramagnetic resonance measurements, singlet oxygen mainly promoted the oxidation of BzOH to BA, which was an important intermediate producing benzene via photocleavage. Odorous alicyclic hydrocarbons were also generated through photorearrangement under nitrogen. On the other hand, the Henry's law constants of the main products were much lower than those of BzOH, indicating that the photoproducts would volatilize from the aqueous phase into the gas phase. The odor threshold of gas-phase products decreased to varying degrees after photoirradiation. Especially for BA, one of the main products, its odor threshold decreased 130 times compared with BzOH. This study shows that the risk of cross-media pollution could significantly increase due to the transformation of aqueous pollutants into odorous VOCs under photoirradiation and provides new insight into its risk prevention. |
| WOS关键词 | HYDROXYL RADICALS ; SINGLET OXYGEN ; CENTER-DOT ; PHOTOCHEMICAL OXIDATION ; WATER-INTERFACE ; AIR ; OH ; DECOMPOSITION ; MECHANISMS ; SCAVENGERS |
| 资助项目 | National Natural Science Foundation of China[51978643] ; Youth Innovation Promotion Association, CAS[2014037] ; 14th Five-year Informatization Plan of Chinese Academy of Sciences, Construction of Scientific Data Center System[WX145XQ07-12] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000766801200006 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; 14th Five-year Informatization Plan of Chinese Academy of Sciences, Construction of Scientific Data Center System |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/52446]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhao, Yuehong |
| 作者单位 | 1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, CAS Key Lab Green Proc & Engn, Inst Proc Engn,Innovat Acad Green Manufacture, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Natl Basic Publ Sci Data Ctr, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Key Lab Photochem, CAS Res,Educ Ctr Excellence Mol Sci,Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Jingyi,Zhao, He,Cao, Hongbin,et al. Photoinduced release of odorous volatile organic compounds from aqueous pollutants: The role of reactive oxygen species in increasing risk during cross-media transformation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,822:8. |
| APA | Lin, Jingyi,Zhao, He,Cao, Hongbin,Zhao, Yuehong,&Chen, Chuncheng.(2022).Photoinduced release of odorous volatile organic compounds from aqueous pollutants: The role of reactive oxygen species in increasing risk during cross-media transformation.SCIENCE OF THE TOTAL ENVIRONMENT,822,8. |
| MLA | Lin, Jingyi,et al."Photoinduced release of odorous volatile organic compounds from aqueous pollutants: The role of reactive oxygen species in increasing risk during cross-media transformation".SCIENCE OF THE TOTAL ENVIRONMENT 822(2022):8. |
入库方式： OAI收割
来源：过程工程研究所
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