The photoenhanced aging process of soot by the heterogeneous ozonization reaction | |
Han, Chong; Liu, Yongchun; He, Hong | |
刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS |
2016 | |
卷号 | 18期号:35页码:24401-24407 |
英文摘要 | The atmospheric aging of soot can significantly modify its composition and microstructure, likely leading to changes in its effects on climate and health. The photochemical aging process of soot by O-3 under simulated sunlight was investigated using in situ attenuated total internal reflection infrared spectroscopy. Simulated sunlight could markedly enhance the aging of soot by O-3, which produced various oxygen containing species such as lactones, anhydrides, ketones and aldehydes. Elemental carbon (EC) showed minor reactivity toward O-3. The organic carbon (OC), which was mainly composed of various polycyclic aromatic hydrocarbons (PAHs) and some unidentified components, played a key role in the photochemical aging of soot by O-3. The kinetics of aromatic species on soot can be well described by a pseudo-first order reaction. The fitting results of the pseudo first-order rate constant (k(1,obs)) as a function of O-3 concentration demonstrated that the photochemical reaction of soot with O3 followed the Langmuir-Hinshelwood mechanism. |
收录类别 | SCI |
内容类型 | 期刊论文 |
源URL | [http://ir.rcees.ac.cn/handle/311016/35770] |
专题 | 生态环境研究中心_大气污染控制中心 |
推荐引用方式 GB/T 7714 | Han, Chong,Liu, Yongchun,He, Hong. The photoenhanced aging process of soot by the heterogeneous ozonization reaction[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2016,18(35):24401-24407. |
APA | Han, Chong,Liu, Yongchun,&He, Hong.(2016).The photoenhanced aging process of soot by the heterogeneous ozonization reaction.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,18(35),24401-24407. |
MLA | Han, Chong,et al."The photoenhanced aging process of soot by the heterogeneous ozonization reaction".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 18.35(2016):24401-24407. |
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