FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4205859303> ?p ?o ?g. }

• W4205859303 endingPage "293" @default.
• W4205859303 startingPage "273" @default.
• W4205859303 abstract "Abstract. Vanillin (VL), a phenolic aromatic carbonyl abundant in biomass burning emissions, forms triplet excited states (3VL∗) under simulated sunlight leading to aqueous secondary organic aerosol (aqSOA) formation. Nitrate and ammonium are among the main components of biomass burning aerosols and cloud or fog water. Under atmospherically relevant cloud and fog conditions, solutions composed of either VL only or VL with ammonium nitrate were subjected to simulated sunlight irradiation to compare aqSOA formation via the direct photosensitized oxidation of VL in the absence and presence of ammonium nitrate. The reactions were characterized by examining the VL decay kinetics, product compositions, and light absorbance changes. Both conditions generated oligomers, functionalized monomers, and oxygenated ring-opening products, and ammonium nitrate promoted functionalization and nitration, likely due to its photolysis products (⚫OH, ⚫NO2, and NO2- or HONO). Moreover, a potential imidazole derivative observed in the presence of ammonium nitrate suggested that ammonium participated in the reactions. The majority of the most abundant products from both conditions were potential brown carbon (BrC) chromophores. The effects of oxygen (O2), pH, and reactants concentration and molar ratios on the reactions were also explored. Our findings show that O2 plays an essential role in the reactions, and oligomer formation was enhanced at pH <4. Also, functionalization was dominant at low VL concentrations, whereas oligomerization was favored at high VL concentrations. Furthermore, oligomers and hydroxylated products were detected from the oxidation of guaiacol (a non-carbonyl phenol) via VL photosensitized reactions. Last, potential aqSOA formation pathways via the direct photosensitized oxidation of VL in the absence and presence of ammonium nitrate were proposed. This study indicates that the direct photosensitized oxidation of VL may be an important aqSOA source in areas influenced by biomass burning and underscores the importance of nitrate in the aqueous-phase processing of aromatic carbonyls." @default.
• W4205859303 created "2022-01-25" @default.
• W4205859303 creator A5004710635 @default.
• W4205859303 creator A5014797115 @default.
• W4205859303 creator A5033684035 @default.
• W4205859303 creator A5049622134 @default.
• W4205859303 creator A5052405328 @default.
• W4205859303 creator A5052806317 @default.
• W4205859303 creator A5054708490 @default.
• W4205859303 creator A5065789029 @default.
• W4205859303 creator A5068305914 @default.
• W4205859303 date "2022-01-10" @default.
• W4205859303 modified "2023-10-14" @default.
• W4205859303 title "Aqueous secondary organic aerosol formation from the direct photosensitized oxidation of vanillin in the absence and presence of ammonium nitrate" @default.
• W4205859303 cites W1608879395 @default.
• W4205859303 cites W1965604779 @default.
• W4205859303 cites W1965663305 @default.
• W4205859303 cites W1966769789 @default.
• W4205859303 cites W1967988178 @default.
• W4205859303 cites W1968496868 @default.
• W4205859303 cites W1968577485 @default.
• W4205859303 cites W1969922892 @default.
• W4205859303 cites W1971716516 @default.
• W4205859303 cites W1972423566 @default.
• W4205859303 cites W1973140371 @default.
• W4205859303 cites W1976216610 @default.
• W4205859303 cites W1977228502 @default.
• W4205859303 cites W1977774401 @default.
• W4205859303 cites W1978077888 @default.
• W4205859303 cites W1979609139 @default.
• W4205859303 cites W1979681863 @default.
• W4205859303 cites W1980448791 @default.
• W4205859303 cites W1981445057 @default.
• W4205859303 cites W1983011979 @default.
• W4205859303 cites W1984281655 @default.
• W4205859303 cites W1985407072 @default.
• W4205859303 cites W1989727670 @default.
• W4205859303 cites W1989901491 @default.
• W4205859303 cites W1990301714 @default.
• W4205859303 cites W1993699652 @default.
• W4205859303 cites W2002022239 @default.
• W4205859303 cites W2005614205 @default.
• W4205859303 cites W2008493342 @default.
• W4205859303 cites W2014978962 @default.
• W4205859303 cites W2015948190 @default.
• W4205859303 cites W2017959016 @default.
• W4205859303 cites W2019566939 @default.
• W4205859303 cites W2022980708 @default.
• W4205859303 cites W2024667190 @default.
• W4205859303 cites W2026250710 @default.
• W4205859303 cites W2027743208 @default.
• W4205859303 cites W2031045438 @default.
• W4205859303 cites W2038554914 @default.
• W4205859303 cites W2038966722 @default.
• W4205859303 cites W2042368181 @default.
• W4205859303 cites W2043762595 @default.
• W4205859303 cites W2043894086 @default.
• W4205859303 cites W2047438255 @default.
• W4205859303 cites W2051383640 @default.
• W4205859303 cites W2053849622 @default.
• W4205859303 cites W2055139808 @default.
• W4205859303 cites W2058140411 @default.
• W4205859303 cites W2059038589 @default.
• W4205859303 cites W2060225394 @default.
• W4205859303 cites W2061512577 @default.
• W4205859303 cites W2061627410 @default.
• W4205859303 cites W2062684589 @default.
• W4205859303 cites W2064805927 @default.
• W4205859303 cites W2066513066 @default.
• W4205859303 cites W2072063126 @default.
• W4205859303 cites W2074122833 @default.
• W4205859303 cites W2076862549 @default.
• W4205859303 cites W2079754222 @default.
• W4205859303 cites W2082531467 @default.
• W4205859303 cites W2091263190 @default.
• W4205859303 cites W2091449632 @default.
• W4205859303 cites W2094782246 @default.
• W4205859303 cites W2096146004 @default.
• W4205859303 cites W2096665312 @default.
• W4205859303 cites W2096804035 @default.
• W4205859303 cites W2102708663 @default.
• W4205859303 cites W2103541022 @default.
• W4205859303 cites W2103639584 @default.
• W4205859303 cites W2109419617 @default.
• W4205859303 cites W2112494462 @default.
• W4205859303 cites W2114837250 @default.
• W4205859303 cites W2122054302 @default.
• W4205859303 cites W2122784934 @default.
• W4205859303 cites W2130042267 @default.
• W4205859303 cites W2141029524 @default.
• W4205859303 cites W2143934067 @default.
• W4205859303 cites W2144923407 @default.
• W4205859303 cites W2150369513 @default.
• W4205859303 cites W2153013350 @default.
• W4205859303 cites W2155181163 @default.
• W4205859303 cites W2158071130 @default.
• W4205859303 cites W2164231461 @default.
• W4205859303 cites W2168407807 @default.

• next