Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Chamber-based insights into the factors controlling epoxydiol (IEPOX) secondary organic aerosol (SOA) yield, composition, and volatility

Journal Article · · Atmospheric Chemistry and Physics
We present measurements utilizing the Filter Inlet for Gases and Aerosols (FIGAERO) applied to chamber measurements of isoprene-derived epoxydiol (IEPOX) reactive uptake to aqueous acidic particles and associated SOA formation. Similar to recent field observations with the same instrument, we detect two molecular components desorbing from the IEPOX SOA in high abundance: C5H12O4 and C5H10O3. The thermal desorption signal of the former, presumably 2-methyltetrols, exhibits two distinct maxima, suggesting it arises from at least two different SOA components with significantly different effective volatilities. Isothermal evaporation experiments illustrate that the most abundant component giving rise to C5H12O4 is semi-volatile, undergoing nearly complete evaporation within 1 hour, while the second, less volatile, component remains unperturbed and even increases in abundance. We thus confirm, using controlled laboratory studies, recent analyses of ambient SOA measurements showing that IEPOX SOA is of very low volatility and commonly measured IEPOX SOA tracers, such as 2-methyltetrols and C5-alkene triols, result predominantly from artifacts of measurement techniques associated with thermal decomposition and/or hydrolysis. We further show that IEPOX SOA volatility continues to evolve via acidity enhanced accretion chemistry on the timescale of hours, potentially involving both 2-methyltetrols and organosulfates.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1633047
Report Number(s):
PNNL-SA-142721
Journal Information:
Atmospheric Chemistry and Physics, Journal Name: Atmospheric Chemistry and Physics Journal Issue: 17 Vol. 19
Country of Publication:
United States
Language:
English

References (43)

Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the southeast United States and co-benefit of SO 2 emission controls journal January 2016
Chemical Characterization of Secondary Organic Aerosol from Oxidation of Isoprene Hydroxyhydroperoxides journal September 2016
Heterogeneous Reactions of Isoprene-Derived Epoxides: Reaction Probabilities and Molar Secondary Organic Aerosol Yield Estimates journal January 2015
Characterization of a real-time tracer for isoprene epoxydiols-derived secondary organic aerosol (IEPOX-SOA) from aerosol mass spectrometer measurements journal January 2015
Chemical Composition of Secondary Organic Aerosol Formed from the Photooxidation of Isoprene journal August 2006
Unexpected Epoxide Formation in the Gas-Phase Photooxidation of Isoprene journal August 2009
Epoxide Pathways Improve Model Predictions of Isoprene Markers and Reveal Key Role of Acidity in Aerosol Formation journal September 2013
Volatility and lifetime against OH heterogeneous reaction of ambient isoprene-epoxydiols-derived secondary organic aerosol (IEPOX-SOA) journal January 2016
The formation, properties and impact of secondary organic aerosol: current and emerging issues journal January 2009
Efficient Isoprene Secondary Organic Aerosol Formation from a Non-IEPOX Pathway journal September 2016
Rate Constants and Products of the OH Reaction with Isoprene-Derived Epoxides journal November 2013
The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1): an extended and updated framework for modeling biogenic emissions journal January 2012
Characterization of oxygenated derivatives of isoprene related to 2-methyltetrols in Amazonian aerosols using trimethylsilylation and gas chromatography/ion trap mass spectrometry journal January 2005
Molecular Composition and Volatility of Organic Aerosol in the Southeastern U.S.: Implications for IEPOX Derived SOA journal February 2016
Isoprene Epoxydiols as Precursors to Secondary Organic Aerosol Formation: Acid-Catalyzed Reactive Uptake Studies with Authentic Compounds journal November 2011
Assessing the Potential Mechanisms of Isomerization Reactions of Isoprene Epoxydiols on Secondary Organic Aerosol journal June 2018
A structure-activity relationship for the estimation of rate constants for the gas-phase reactions of OH radicals with organic compounds journal September 1987
Isothermal Evaporation of α-Pinene Ozonolysis SOA: Volatility, Phase State, and Oligomeric Composition journal September 2018
Increasing Isoprene Epoxydiol-to-Inorganic Sulfate Aerosol Ratio Results in Extensive Conversion of Inorganic Sulfate to Organosulfur Forms: Implications for Aerosol Physicochemical Properties journal June 2019
Reactive Uptake of an Isoprene-Derived Epoxydiol to Submicron Aerosol Particles journal September 2014
Isoprene-Derived Organosulfates: Vibrational Mode Analysis by Raman Spectroscopy, Acidity-Dependent Spectral Modes, and Observation in Individual Atmospheric Particles journal December 2017
Glyoxal and Methylglyoxal Setschenow Salting Constants in Sulfate, Nitrate, and Chloride Solutions: Measurements and Gibbs Energies journal September 2015
Development of a hydrophilic interaction liquid chromatography (HILIC) method for the chemical characterization of water-soluble isoprene epoxydiol (IEPOX)-derived secondary organic aerosol journal January 2018
Estimating the saturation vapor pressures of isoprene oxidation products C 5 H 12 O 6 and C 5 H 10 O 6 using COSMO-RS journal January 2018
Gas Phase Production and Loss of Isoprene Epoxydiols journal February 2014
Effect of Acidity on Secondary Organic Aerosol Formation from Isoprene journal August 2007
Heterogeneous Atmospheric Aerosol Production by Acid-Catalyzed Particle-Phase Reactions journal October 2002
EVAPORATION: a new vapour pressure estimation methodfor organic molecules including non-additivity and intramolecular interactions journal January 2011
Molecular composition and volatility of isoprene photochemical oxidation secondary organic aerosol under low- and high-NO x  conditions journal January 2017
An Iodide-Adduct High-Resolution Time-of-Flight Chemical-Ionization Mass Spectrometer: Application to Atmospheric Inorganic and Organic Compounds journal May 2014
Effect of the Aerosol-Phase State on Secondary Organic Aerosol Formation from the Reactive Uptake of Isoprene-Derived Epoxydiols (IEPOX) journal February 2018
Light-Absorbing Oligomer Formation in Secondary Organic Aerosol from Reactive Uptake of Isoprene Epoxydiols journal October 2014
Kinetics and Products of the Reaction of the First-Generation Isoprene Hydroxy Hydroperoxide (ISOPOOH) with OH journal September 2015
Effects of anthropogenic emissions on aerosol formation from isoprene and monoterpenes in the southeastern United States journal December 2014
Isomerization of Second-Generation Isoprene Peroxy Radicals: Epoxide Formation and Implications for Secondary Organic Aerosol Yields journal April 2017
Reactive intermediates revealed in secondary organic aerosol formation from isoprene journal December 2009
Kinetics and Products of the Acid-Catalyzed Ring-Opening of Atmospherically Relevant Butyl Epoxy Alcohols journal August 2010
A novel method for online analysis of gas and particle composition: description and evaluation of a Filter Inlet for Gases and AEROsols (FIGAERO) journal January 2014
Ambient Gas-Particle Partitioning of Tracers for Biogenic Oxidation journal September 2016
Technical Note: Synthesis of isoprene atmospheric oxidation products: isomeric epoxydiols and the rearrangement products cis - and trans -3-methyl-3,4-dihydroxytetrahydrofuran journal January 2012
A model framework to retrieve thermodynamic and kinetic properties of organic aerosol from composition-resolved thermal desorption measurements journal January 2018
Evidence for Organosulfates in Secondary Organic Aerosol journal January 2007
Hydrolysis of Organonitrate Functional Groups in Aerosol Particles journal December 2012

Similar Records

Natural and Anthropogenically Influenced Isoprene Oxidation in Southeastern United States and Central Amazon
Journal Article · Wed Apr 08 20:00:00 EDT 2020 · Environmental Science and Technology · OSTI ID:1674999

Characterization of a real-time tracer for isoprene epoxydiols-derived secondary organic aerosol (IEPOX-SOA) from aerosol mass spectrometer measurements
Journal Article · Thu Oct 22 20:00:00 EDT 2015 · Atmospheric Chemistry and Physics (Online) · OSTI ID:1243128

Observationally Constrained Modeling of the Reactive Uptake of Isoprene-Derived Epoxydiols under Elevated Relative Humidity and Varying Acidity of Seed Aerosol Conditions
Journal Article · Tue Mar 28 20:00:00 EDT 2023 · ACS Earth and Space Chemistry · OSTI ID:1970743

Related Subjects