Photoinduced formation of persistent free radicals, hydrogen radicals, and hydroxyl radicals from catechol on atmospheric particulate matter
文献类型：期刊论文
| 作者 | Qin, Linjun; Yang, Lili; Yang, Jiahui; Weber, Ralph; Ranguelova, Kalina; Liu, Xiaoyun; Lin, Bingcheng; Li, Cui; Zheng, Minghui; Liu, Guorui
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| 刊名 | ISCIENCE
 |
| 出版日期 | 2021-03-19 |
| 卷号 | 24期号:3页码:- |
| 英文摘要 | Catechol is speculated to be a potential precursor of environmentally persistent free radicals (EPFRs) in the atmosphere. EPFRs absorbed on PM2.5 have attracted public attention because their toxicity is similar to cigarette smoke. In this study, we found that catechol could produce EPFRs, which were oxygen-centered phenoxy and semiquinone radicals. These free radical species had half-lives of up to 382 days. CaO, CuO, and Fe2O3 markedly promoted EPFR formation from catechol. The valence states of Cu and Fe changed during the photochemical reactions of catechol but no valence state changed for Ca. Alkaline nature of CaO is possibly the key for promoting the free radical formations through acid-base reactions with catechol. In addition to hydroxyl free radicals, hydrogen free radicals and superoxide anions formed from the photochemical reactions of catechol were first discovered. This is of concern because of the adverse effects of these free radicals on human health. |
| WOS研究方向 | Multidisciplinary Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45811]  |
| 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.Univ Chinese Acad Sci, Coll Resource & Environm, Beijing 100049, Peoples R China 2.Bruker BioSpin Corp, Shanghai 200233, Peoples R China 3.Bruker BioSpin Corp, Billerica, MA 01821 USA 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 5.UCAS, Hangzhou Inst Adv Study, Sch Environm, Hangzhou 310000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Linjun,Yang, Lili,Yang, Jiahui,et al. Photoinduced formation of persistent free radicals, hydrogen radicals, and hydroxyl radicals from catechol on atmospheric particulate matter[J]. ISCIENCE,2021,24(3):-. |
| APA | Qin, Linjun.,Yang, Lili.,Yang, Jiahui.,Weber, Ralph.,Ranguelova, Kalina.,...&Liu, Guorui.(2021).Photoinduced formation of persistent free radicals, hydrogen radicals, and hydroxyl radicals from catechol on atmospheric particulate matter.ISCIENCE,24(3),-. |
| MLA | Qin, Linjun,et al."Photoinduced formation of persistent free radicals, hydrogen radicals, and hydroxyl radicals from catechol on atmospheric particulate matter".ISCIENCE 24.3(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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