Effect of the Aerosol-Phase State on Secondary Organic Aerosol Formation from the Reactive Uptake of Isoprene-Derived Epoxydiols (IEPOX)

Yue Zhang, Yuzhi Chen, Andrew T. Lambe, Nicole E. Olson, Ziying Lei, Rebecca L. Craig, Zhenfa Zhang, Avram Gold, Timothy B. Onasch, John T. Jayne, Douglas R. Worsnop, Cassandra Gaston, Joel A. Thornton, William Vizuete, Andrew P. Ault, Jason D. Surratt

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Acid-catalyzed reactions between gas- and particle-phase constituents are critical to atmospheric secondary organic aerosol (SOA) formation. The aerosol-phase state is thought to influence the reactive uptake of gas-phase precursors to aerosol particles by altering diffusion rates within particles. However, few experimental studies have explored the precise role of the aerosol-phase state on reactive uptake processes. This laboratory study systematically examines the reactive uptake coefficient (γ) of trans-β-isoprene epoxydiol (trans-β-IEPOX), the predominant IEPOX isomer, on acidic sulfate particles coated with SOA derived from α-pinene ozonolysis. γIEPOX is obtained for core-shell particles, the morphology of which was confirmed by microscopy, as a function of SOA coating thickness and relative humidity. γIEPOX is reduced, in some cases by half of the original value, when SOA coatings are present prior to uptake, especially when coating thicknesses are >15 nm. The diurnal trend of IEPOX lost to acid-catalyzed reactive uptake yielding SOA compared with other known atmospheric sinks (gas-phase oxidation or deposition) is derived by modeling the experimental coating effect with field data from the southeastern United States. IEPOX-derived SOA is estimated to be reduced by 16-27% due to preexisting organic coatings during the afternoon (12:00 to 7:00 p.m., local time), corresponding to the period with the highest level of production.

Original languageEnglish (US)
Pages (from-to)167-174
Number of pages8
JournalEnvironmental Science and Technology Letters
Volume5
Issue number3
DOIs
StatePublished - Mar 13 2018

Fingerprint

Isoprene
aerosol formation
isoprene
Aerosols
aerosol
coating
Particles (particulate matter)
Coatings
Gases
atmospheric sink
gas
Southeastern United States
effect
acid
Organic coatings
Acids
Humidity
relative humidity
microscopy
Isomers

ASJC Scopus subject areas

  • Ecology
  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Water Science and Technology

Cite this

Effect of the Aerosol-Phase State on Secondary Organic Aerosol Formation from the Reactive Uptake of Isoprene-Derived Epoxydiols (IEPOX). / Zhang, Yue; Chen, Yuzhi; Lambe, Andrew T.; Olson, Nicole E.; Lei, Ziying; Craig, Rebecca L.; Zhang, Zhenfa; Gold, Avram; Onasch, Timothy B.; Jayne, John T.; Worsnop, Douglas R.; Gaston, Cassandra; Thornton, Joel A.; Vizuete, William; Ault, Andrew P.; Surratt, Jason D.

In: Environmental Science and Technology Letters, Vol. 5, No. 3, 13.03.2018, p. 167-174.

Research output: Contribution to journalArticle

Zhang, Y, Chen, Y, Lambe, AT, Olson, NE, Lei, Z, Craig, RL, Zhang, Z, Gold, A, Onasch, TB, Jayne, JT, Worsnop, DR, Gaston, C, Thornton, JA, Vizuete, W, Ault, AP & Surratt, JD 2018, 'Effect of the Aerosol-Phase State on Secondary Organic Aerosol Formation from the Reactive Uptake of Isoprene-Derived Epoxydiols (IEPOX)', Environmental Science and Technology Letters, vol. 5, no. 3, pp. 167-174. https://doi.org/10.1021/acs.estlett.8b00044
Zhang, Yue ; Chen, Yuzhi ; Lambe, Andrew T. ; Olson, Nicole E. ; Lei, Ziying ; Craig, Rebecca L. ; Zhang, Zhenfa ; Gold, Avram ; Onasch, Timothy B. ; Jayne, John T. ; Worsnop, Douglas R. ; Gaston, Cassandra ; Thornton, Joel A. ; Vizuete, William ; Ault, Andrew P. ; Surratt, Jason D. / Effect of the Aerosol-Phase State on Secondary Organic Aerosol Formation from the Reactive Uptake of Isoprene-Derived Epoxydiols (IEPOX). In: Environmental Science and Technology Letters. 2018 ; Vol. 5, No. 3. pp. 167-174.
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abstract = "Acid-catalyzed reactions between gas- and particle-phase constituents are critical to atmospheric secondary organic aerosol (SOA) formation. The aerosol-phase state is thought to influence the reactive uptake of gas-phase precursors to aerosol particles by altering diffusion rates within particles. However, few experimental studies have explored the precise role of the aerosol-phase state on reactive uptake processes. This laboratory study systematically examines the reactive uptake coefficient (γ) of trans-β-isoprene epoxydiol (trans-β-IEPOX), the predominant IEPOX isomer, on acidic sulfate particles coated with SOA derived from α-pinene ozonolysis. γIEPOX is obtained for core-shell particles, the morphology of which was confirmed by microscopy, as a function of SOA coating thickness and relative humidity. γIEPOX is reduced, in some cases by half of the original value, when SOA coatings are present prior to uptake, especially when coating thicknesses are >15 nm. The diurnal trend of IEPOX lost to acid-catalyzed reactive uptake yielding SOA compared with other known atmospheric sinks (gas-phase oxidation or deposition) is derived by modeling the experimental coating effect with field data from the southeastern United States. IEPOX-derived SOA is estimated to be reduced by 16-27{\%} due to preexisting organic coatings during the afternoon (12:00 to 7:00 p.m., local time), corresponding to the period with the highest level of production.",
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AU - Craig, Rebecca L.

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AU - Worsnop, Douglas R.

AU - Gaston, Cassandra

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