Formation of secondary organic aerosol during the dark-ozonolysis of α-humulene

Sippial, Dontavious; Uruci, Petro; Kostenidou, Evangelia; Pandis, Spyros Ν.

doi:10.1039/d2ea00181k

Environ. Sci.: Atmos.

2023

DOI: 10.1039/d2ea00181k

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Formation of secondary organic aerosol during the dark-ozonolysis of α-humulene

Dontavious Sippial

Petro Uruci

Evangelia Kostenidou

et al.

Abstract: Sesquiterpenes (C15H24) are a class of biogenic volatile organic compounds that are significant secondary organic aerosol (SOA) precursors due to their high reactivity with oxidants and their high SOA yields....

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Cited by 4 publications

References 39 publications

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Bidirectional emission of organic compounds by decaying leaf litter of a number of forest-forming tree species in the northern hemisphere

Isidorov,

Maslowiecka,

Sarapultseva

2024

Geoderma

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Bidirectional emission of organic compounds by decaying leaf litter of a number of forest-forming tree species in the northern hemisphere

Isidorov,

Maslowiecka,

Sarapultseva

2024

Geoderma

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Properties and Atmospheric Oxidation of Terebic Acid Aerosol

Florou,

Błaziak,

Jorga

et al. 2024

ACS Earth Space Chem.

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Terebic acid (C 7 H 10 O 4 ) is a biogenic secondary organic aerosol constituent, produced by the oxidation of first-and second-generation products of monoterpenes such as α-pinene, βpinene, and Δ 3 -carene. It is a processed derivative of terpenylic acid and has been identified in aerosol samples from terrestrial and forest environments. The physicochemical properties of pure terebic acid aerosol were characterized using two different atmospheric simulation chambers and a suite of online particle and gas-phase instrumentation. Its mass spectrum, obtained by a high-resolution time-of-flight mass spectrometer, had characteristic peaks at massto-charge (m/z) ratios 81, 96, 100, 115, and 143, mainly related to oxygenated fragment ions. The density of terebic acid aerosol was 1.33 ± 0.20 g cm −3 , and its vaporization enthalpy was 85 kJ mol −1 . The estimated saturation concentration at 298 K of 2.6 ± 1.2 μg m −3 places terebic acid in the semivolatile organic compound category. Oxidation of terebic acid aerosol by hydroxyl (OH) radicals resulted in a substantial reduction in organic aerosol (OA) mass concentration (up to 80%), with no significant alteration in the OA spectrum or aerosol O:C ratio, indicating negligible production of secondary OA. Gas-phase analysis detected the production of smaller compounds, such as acetone. The terebic acid oxidation products were mostly in the gas phase as fragmentation appears to dominate its reaction with OH radicals. The gas-phase reaction rate constant with OH was estimated to be 3 × 10 −12 cm 3 molecule −1 s −1 .

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Exploring the discrepancies between SMPS and AMS measurements in secondary organic aerosol formation experiments

Pavlidis,

Sippial,

Florou

et al. 2024

Aerosol Science and Technology

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Formation of secondary organic aerosol during the dark-ozonolysis of α-humulene

Abstract: Sesquiterpenes (C15H24) are a class of biogenic volatile organic compounds that are significant secondary organic aerosol (SOA) precursors due to their high reactivity with oxidants and their high SOA yields....

Cited by 4 publications

References 39 publications

Bidirectional emission of organic compounds by decaying leaf litter of a number of forest-forming tree species in the northern hemisphere

Bidirectional emission of organic compounds by decaying leaf litter of a number of forest-forming tree species in the northern hemisphere

Properties and Atmospheric Oxidation of Terebic Acid Aerosol

Exploring the discrepancies between SMPS and AMS measurements in secondary organic aerosol formation experiments

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