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• W4283794058 endingPage "8527" @default.
• W4283794058 startingPage "8497" @default.
• W4283794058 abstract "Abstract. The oxidation of limonene by the hydroxyl (OH) radical and ozone (O3) was investigated in the atmospheric simulation chamber SAPHIR (Simulation of Atmospheric PHotochemistry In a large Reaction Chamber) in experiments performed at different nitric oxide (NO) mixing ratios from nearly 0 up to 10 ppbv. For the experiments dominated by OH oxidation, the formaldehyde (HCHO) yield was experimentally determined and found to be (12 ± 3), (13 ± 3), and (32 ± 5) % for experiments with low (∼ 0.1 ppbv), medium (∼ 0.3 ppbv), and high NO (5 to 10 ppbv), respectively. The yield in an ozonolysis-only experiment was (10 ± 1) %, which agrees with previous laboratory studies. The experimental yield of the first-generation organic nitrates from limonene–OH oxidation is calculated as (34 ± 5) %, about 11 % higher than the value in the Master Chemical Mechanism (MCM), which is derived from structure–activity relationships (SARs). Time series of measured radicals, trace-gas concentrations, and OH reactivity are compared to results from zero-dimensional chemical box model calculations applying MCM v3.3.1. Modeled OH reactivity is 5 to 10 s−1 (25 % to 33 % of the OH reactivity at the start of the experiment) higher than measured values at the end of the experiments under all chemical conditions investigated, suggesting either that there are unaccounted loss processes of limonene oxidation products or that products are less reactive toward OH. In addition, model calculations underestimate measured hydroperoxyl radical (HO2) concentrations by 20 % to 90 % and overestimate organic peroxyl radical (RO2) concentrations by 50 % to 300 %. The largest deviations are found in low-NO experiments and in the ozonolysis experiment. An OH radical budget analysis, which uses only measured quantities, shows that the budget is closed in most of the experiments. A similar budget analysis for RO2 radicals suggests that an additional RO2 loss rate constant of about (1–6) × 10−2 s−1 for first-generation RO2 is required to match the measured RO2 concentrations in all experiments. Sensitivity model runs indicate that additional reactions converting RO2 to HO2 at a rate constant of about (1.7–3.0) × 10−2 s−1 would improve the model–measurement agreement of NOx, HO2, and RO2 concentrations and OH reactivity. Reaction pathways that could lead to the production of additional OH and HO2 are discussed, which include isomerization reactions of RO2 from the oxidation of limonene, different branching ratios for the reaction of RO2 with HO2, and a faster rate constant for RO2 recombination reactions. As the exact chemical mechanisms of the additional HO2 and OH sources could not be identified, further work needs to focus on quantifying organic product species and organic peroxy radicals from limonene oxidation." @default.
• W4283794058 created "2022-07-05" @default.
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• W4283794058 date "2022-07-04" @default.
• W4283794058 modified "2023-10-17" @default.
• W4283794058 title "Investigation of the limonene photooxidation by OH at different NO concentrations in the atmospheric simulation chamber SAPHIR (Simulation of Atmospheric PHotochemistry In a large Reaction Chamber)" @default.
• W4283794058 cites W1966567010 @default.
• W4283794058 cites W1967107343 @default.
• W4283794058 cites W1969497481 @default.
• W4283794058 cites W1976186159 @default.
• W4283794058 cites W1980224608 @default.
• W4283794058 cites W1987552244 @default.
• W4283794058 cites W1994298472 @default.
• W4283794058 cites W1997272876 @default.
• W4283794058 cites W2000144171 @default.
• W4283794058 cites W2002509384 @default.
• W4283794058 cites W2005833157 @default.
• W4283794058 cites W2010670716 @default.
• W4283794058 cites W2013287304 @default.
• W4283794058 cites W2020768303 @default.
• W4283794058 cites W2023145591 @default.
• W4283794058 cites W2024095367 @default.
• W4283794058 cites W2030552366 @default.
• W4283794058 cites W2033230301 @default.
• W4283794058 cites W2038858025 @default.
• W4283794058 cites W2040450731 @default.
• W4283794058 cites W2047376353 @default.
• W4283794058 cites W2048480840 @default.
• W4283794058 cites W2077425974 @default.
• W4283794058 cites W2079454195 @default.
• W4283794058 cites W2082035655 @default.
• W4283794058 cites W2084099103 @default.
• W4283794058 cites W2084897789 @default.
• W4283794058 cites W2090520775 @default.
• W4283794058 cites W2092058411 @default.
• W4283794058 cites W2092896976 @default.
• W4283794058 cites W2093264248 @default.
• W4283794058 cites W2097857598 @default.
• W4283794058 cites W2102468142 @default.
• W4283794058 cites W2103226679 @default.
• W4283794058 cites W2113212697 @default.
• W4283794058 cites W2115947688 @default.
• W4283794058 cites W2120075878 @default.
• W4283794058 cites W2120980103 @default.
• W4283794058 cites W2124610638 @default.
• W4283794058 cites W2129678989 @default.
• W4283794058 cites W2130338957 @default.
• W4283794058 cites W2137029702 @default.
• W4283794058 cites W2141710437 @default.
• W4283794058 cites W2152137643 @default.
• W4283794058 cites W2154071707 @default.
• W4283794058 cites W2154568974 @default.
• W4283794058 cites W2156640791 @default.
• W4283794058 cites W2158540706 @default.
• W4283794058 cites W2160885731 @default.
• W4283794058 cites W2164594537 @default.
• W4283794058 cites W2165619190 @default.
• W4283794058 cites W2166664700 @default.
• W4283794058 cites W2316726070 @default.
• W4283794058 cites W2319805781 @default.
• W4283794058 cites W2320712911 @default.
• W4283794058 cites W2330799264 @default.
• W4283794058 cites W2550067473 @default.
• W4283794058 cites W2592999838 @default.
• W4283794058 cites W2604995212 @default.
• W4283794058 cites W2739873305 @default.
• W4283794058 cites W2785649357 @default.
• W4283794058 cites W2801754750 @default.
• W4283794058 cites W2890277796 @default.
• W4283794058 cites W2893378556 @default.
• W4283794058 cites W2897729160 @default.
• W4283794058 cites W2901630495 @default.
• W4283794058 cites W2904356855 @default.
• W4283794058 cites W2914848814 @default.
• W4283794058 cites W2916856951 @default.
• W4283794058 cites W2917630884 @default.
• W4283794058 cites W2955601895 @default.
• W4283794058 cites W2981223275 @default.
• W4283794058 cites W3009101494 @default.
• W4283794058 cites W3010788975 @default.

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