On February 15, 2020, Ye, Zhaolian; Zhuang, Yu; Chen, Yantong; Zhao, Zhuzi; Ma, Shuaishuai; Huang, Hongying; Chen, Yanfang; Ge, Xinlei published an article.Name: Methyl 2-cyclopentanonecarboxylate The title of the article was Aqueous-phase oxidation of three phenolic compounds by hydroxyl radical: Insight into secondary organic aerosol formation yields, mechanisms, products and optical properties. And the article contained the following:
This work performed a systematic investigation on the aqueous hydroxyl radical (OH) – induced photochem. oxidation of three modestly-soluble precursors from biomass combustion including 4-methylsyringol (DMP), eugenol (Eug), and 2,4,6-trimethylphenol (TRMP) under both simulated sunlight and UV light irradiations. An Aerodyne soot particle aerosol mass spectrometer (SP-AMS) was used to monitor the bulk chem. and elemental compositions of aqueous secondary organic aerosol (aqSOA) formed. AqSOA mass yields varied in ranges of 80-190% and 0-200% under sunlight and UV light conditions, resp. AqSOA oxygen-to-carbon (O/C) ratio and carbon oxidation state increased steadily under sunlight + OH condition, but increased then decreased under UV + OH condition. Organic acids including malic acid, glycolic acid, formic acid and oxalic acid were formed, and their total accounted for ∼12% of SOA mass. The UV-vis spectral change suggested formation of light-absorbing organics Reaction pathways were proposed by combining gas chromatog.-mass spectrometry (GC-MS) and SP-AMS results. Under sunlight + OH condition, oligomerization, functionalization, and fragmentation processes all involved in aqSOA evolution, with more contribution from functionalization via hydroxylation and oxygenation reactions. Reaction mechanism of UV + OH oxidation was initially dominated by functionalization then by fragmentation, indicating by the decrease of total organic carbon (TOC) contents, formation of small organic acids and low-mol.-weight products. Our work highlights that combination of SP-AMS with GC-MS is a powerful method for laboratory investigation of aqueous-phase reactions. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Name: Methyl 2-cyclopentanonecarboxylate
The Article related to phenolic compound oxidation hydroxyl radical secondary organic aerosol, Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes: Radiation Chemistry and Photochemistry and other aspects.Name: Methyl 2-cyclopentanonecarboxylate
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