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• W2166646989 endingPage "7415" @default.
• W2166646989 startingPage "7399" @default.
• W2166646989 abstract "Abstract. Aqueous phase chemical processes of organic compounds in the atmosphere have received increasing attention, partly due to their potential contribution to the formation of secondary organic aerosol (SOA). Here, we analyzed the aqueous OH-initiated oxidation of isoprene and its reaction products including carbonyl compounds and organic acids, regarding the acidity and temperature as in-cloudy conditions. We also performed a laboratory simulation to improve our understanding of the kinetics and mechanisms for the products of aqueous isoprene oxidation that are significant precursors of SOA; these included methacrolein (MACR), methyl vinyl ketone (MVK), methyl glyoxal (MG), and glyoxal (GL). We used a novel chemical titration method to monitor the concentration of isoprene in the aqueous phase. We used a box model to interpret the mechanistic differences between aqueous and gas phase OH radical-initiated isoprene oxidations. Our results were the first demonstration of the rate constant for the reaction between isoprene and OH radical in water, 1.2 ± 0.4) × 1010 M−1 s−1 at 283 K. Molar yields were determined based on consumed isoprene. Of note, the ratio of the yields of MVK (24.1 ± 0.8 %) to MACR (10.9 ± 1.1%) in the aqueous phase isoprene oxidation was approximately double that observed for the corresponding gas phase reaction. We hypothesized that this might be explained by a water-induced enhancement in the self-reaction of a hydroxy isoprene peroxyl radical (HOCH2C(CH3)(O2)CH = CH2) produced in the aqueous reaction. The observed yields for MG and GL were 11.4 ± 0.3 % and 3.8 ± 0.1 %, respectively. Model simulations indicated that several potential pathways may contribute to the formation of MG and GL. Finally, oxalic acid increased steadily throughout the course of the study, even after isoprene was consumed completely. The observed yield of oxalic acid was 26.2 ± 0.8 % at 6 h. The observed carbon balance accounted for ~50 % of the consumed isoprene. The presence of high-molecular-weight compounds may have accounted for a large portion of the missing carbons, but they were not quantified in this study. In summary, our work has provided experimental evidence that the availably abundant water could affect the distribution of oxygenated organic compounds produced in the oxidation of volatile organic compounds." @default.
• W2166646989 created "2016-06-24" @default.
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• W2166646989 date "2011-08-01" @default.
• W2166646989 modified "2023-09-30" @default.
• W2166646989 title "The kinetics and mechanism of an aqueous phase isoprene reaction with hydroxyl radical" @default.
• W2166646989 cites W1926950498 @default.
• W2166646989 cites W1964220885 @default.
• W2166646989 cites W1964952019 @default.
• W2166646989 cites W1965775902 @default.
• W2166646989 cites W1965886134 @default.
• W2166646989 cites W1968325500 @default.
• W2166646989 cites W1968989335 @default.
• W2166646989 cites W1970652095 @default.
• W2166646989 cites W1972712226 @default.
• W2166646989 cites W1980753368 @default.
• W2166646989 cites W1985984668 @default.
• W2166646989 cites W1987623834 @default.
• W2166646989 cites W1988069320 @default.
• W2166646989 cites W1991199950 @default.
• W2166646989 cites W1995399853 @default.
• W2166646989 cites W2001146206 @default.
• W2166646989 cites W2006851844 @default.
• W2166646989 cites W2007732183 @default.
• W2166646989 cites W2009256533 @default.
• W2166646989 cites W2010076747 @default.
• W2166646989 cites W2015153269 @default.
• W2166646989 cites W2019356278 @default.
• W2166646989 cites W2021440882 @default.
• W2166646989 cites W2024202119 @default.
• W2166646989 cites W2029540096 @default.
• W2166646989 cites W2033309415 @default.
• W2166646989 cites W2033726662 @default.
• W2166646989 cites W2034493678 @default.
• W2166646989 cites W2034716589 @default.
• W2166646989 cites W2035618697 @default.
• W2166646989 cites W2036958051 @default.
• W2166646989 cites W2048117557 @default.
• W2166646989 cites W2048756141 @default.
• W2166646989 cites W2050317850 @default.
• W2166646989 cites W2051001297 @default.
• W2166646989 cites W2055970476 @default.
• W2166646989 cites W2057887602 @default.
• W2166646989 cites W2068701495 @default.
• W2166646989 cites W2069022880 @default.
• W2166646989 cites W2071052823 @default.
• W2166646989 cites W2072687598 @default.
• W2166646989 cites W2074166633 @default.
• W2166646989 cites W2075982018 @default.
• W2166646989 cites W2080617190 @default.
• W2166646989 cites W2081759844 @default.
• W2166646989 cites W2082216829 @default.
• W2166646989 cites W2085219784 @default.
• W2166646989 cites W2088059691 @default.
• W2166646989 cites W2088320493 @default.
• W2166646989 cites W2089850009 @default.
• W2166646989 cites W2093349720 @default.
• W2166646989 cites W2099620600 @default.
• W2166646989 cites W2107751561 @default.
• W2166646989 cites W2110055297 @default.
• W2166646989 cites W2114837250 @default.
• W2166646989 cites W2122966070 @default.
• W2166646989 cites W2128791022 @default.
• W2166646989 cites W2133547565 @default.
• W2166646989 cites W2145651246 @default.
• W2166646989 cites W2151950831 @default.
• W2166646989 cites W2153201520 @default.
• W2166646989 cites W2154435143 @default.
• W2166646989 cites W2155704085 @default.
• W2166646989 cites W2164562420 @default.
• W2166646989 cites W2167239580 @default.
• W2166646989 cites W2171810356 @default.
• W2166646989 cites W2312941425 @default.
• W2166646989 cites W2952920983 @default.
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• W2166646989 doi "https://doi.org/10.5194/acp-11-7399-2011" @default.
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