In 2021.0 ENVIRON SCI TECHNOL published article about SECONDARY ORGANIC AEROSOL; FINE PARTICULATE MATTER; TRIPLET EXCITED-STATE; MOLECULAR CHARACTERIZATION; BROWN CARBON; SOURCE APPORTIONMENT; AIR-QUALITY; OXIDATION; SMOKE; EMISSIONS in [Jiang, Wenqing; Zhang, Qi] Univ Calif Davis, Dept Environm Toxicol, Davis, CA 95616 USA; [Jiang, Wenqing; McFall, Alexander S.; Anastasio, Cort; Zhang, Qi] Univ Calif Davis, Agr & Environm Chem Grad Grp, Davis, CA 95616 USA; [Misovich, Maria, V; Hettiyadura, Anusha P. S.; Laskin, Alexander] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA; [Laskin, Alexander] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; [McFall, Alexander S.; Anastasio, Cort] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA in 2021.0, Cited 74.0. The Name is 3,4-Dimethoxybenzaldehyde. Through research, I have a further understanding and discovery of 120-14-9. Computed Properties of C9H10O3
Guaiacyl acetone (GA) is a phenolic carbonyl emitted in significant quantities by wood combustion that undergoes rapid aqueous-phase oxidation to produce aqueous secondary organic aerosol (aqSOA). We investigate the photosensitized oxidation of GA by an organic triplet excited state (C-3*) and the formation and aging of the resulting aqSOA in wood smokeinfluenced fog/cloud water. The chemical transformations of the aqSOA were characterized in situ using a high-resolution time-offlight aerosol mass spectrometer. Additionally, aqSOA samples collected over different time periods were analyzed using highperformance liquid chromatography coupled with a photodiode array detector and a high-resolution Orbitrap mass spectrometer (HPLC-PDA-HRMS) to provide details on the molecular composition and optical properties of brown carbon (BrC) chromophores. Our results show efficient formation of aqSOA from GA, with an average mass yield around 80%. The composition and BrC properties of the aqSOA changed significantly over the course of reaction. Three generations of aqSOA products were identified via positive matrix factorization analysis of the aerosol mass spectrometry data. Oligomerization and functionalization dominated the production of the first-generation aqSOA, whereas fragmentation and ring-opening reactions controlled the formation of more oxidized second-and third-generation products. Significant formation of BrC was observed in the early stages of the photoreaction, while organic acids were produced throughout the experiment. High-molecular weight molecules (m/z > 180) with high aromaticity were identified via HPLC-PDA-HRMS and were found to account for a majority of the UV-vis absorption of the aqSOA.
Computed Properties of C9H10O3. About 3,4-Dimethoxybenzaldehyde, If you have any questions, you can contact Jiang, WQ; Misovich, MV; Hettiyadura, APS; Laskin, A; McFall, AS; Anastasio, C; Zhang, Q or concate me.
Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles