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Title: Monoterpene Photooxidation in a Continuous-Flow Chamber: SOA Yields and Impacts of Oxidants, NOx, and VOC Precursors

Journal Article · · Environmental Science and Technology

We report monoterpene photooxidation plays an important role in secondary organic aerosol (SOA) formation in the atmosphere. The low-volatility products can enhance new particle formation and particle growth, and thus have influences on climate feedbacks. Here, we present the results of α-pinene and Δ-3-carene photooxidation experiments conducted in continuous-flow mode in an environmental chamber under several reaction conditions. The roles of oxidants, addition of NO, and VOC molecular structure in influencing SOA yield are illustrated. SOA yield from α-pinene photooxidation shows a weak dependence on H2O2 concentration, which is a proxy for HO2 concentration. The high O/C ratios observed in the a-pinene photooxidation products suggest the production of highly oxygenated organic molecules (HOM). Addition of ozone to the chamber during low-NOx photooxidation experiments leads to higher SOA yield. With the addition of NO, the production of N-containing HOMs is enhanced and the SOA yield shows a modest, non-linear dependence on input NO concentration. Carene photooxidation leads to higher SOA yield than α-pinene under similar reaction conditions, which agrees with the lower volatility retrieved from evaporation kinetics experiments. These results improve the understanding of SOA formation from monoterpene photooxidation and could be applied to refine the representation of biogenic SOA formation in models.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); NOAA Climate and Global Change
Grant/Contract Number:
AC05-76RL01830; SC0006867; SC0011791
OSTI ID:
1888285
Report Number(s):
PNNL-SA-176021
Journal Information:
Environmental Science and Technology, Vol. 56, Issue 17; ISSN 0013-936X
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (66)

Aging of biogenic secondary organic aerosol via gas-phase OH radical reactions journal August 2012
Kinetics, products, and mechanisms of secondary organic aerosol formation journal January 2012
A generalised method for the extraction of chemically resolved mass spectra from Aerodyne aerosol mass spectrometer data journal July 2004
Formation and evolution of molecular products in α-pinene secondary organic aerosol journal November 2015
Highly Oxygenated Organic Molecules (HOM) from Gas-Phase Autoxidation Involving Peroxy Radicals: A Key Contributor to Atmospheric Aerosol journal January 2019
The effect of particle acidity on secondary organic aerosol formation from <i>α</i>-pinene photooxidation under atmospherically relevant conditions journal November 2016
Secondary Organic Aerosol Production from Terpene Ozonolysis. 1. Effect of UV Radiation journal September 2005
The effect of water on gas–particle partitioning of secondary organic aerosol. Part I: α-pinene/ozone system journal December 2001
Elemental composition and oxidation of chamber organic aerosol journal January 2011
Elemental Analysis of Organic Species with Electron Ionization High-Resolution Mass Spectrometry journal November 2007
Effect of the OH Radical Scavenger Hydrogen Peroxide on Secondary Organic Aerosol Formation from α-Pinene Ozonolysis journal April 2011
Development of an Aerosol Mass Spectrometer for Size and Composition Analysis of Submicron Particles journal July 2000
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
Efficient Isoprene Secondary Organic Aerosol Formation from a Non-IEPOX Pathway journal September 2016
Formation of Highly Oxidized Molecules from NO 3 Radical Initiated Oxidation of Δ-3-Carene: A Mechanistic Study journal May 2019
Phase partitioning and volatility of secondary organic aerosol components formed from α-pinene ozonolysis and OH oxidation: the importance of accretion products and other low volatility compounds journal January 2015
Influence of vapor wall loss in laboratory chambers on yields of secondary organic aerosol journal April 2014
Gas-phase tropospheric chemistry of biogenic volatile organic compounds: a review journal January 2003
Particle Phase Acidity and Oligomer Formation in Secondary Organic Aerosol journal December 2004
Impact of NOx on secondary organic aerosol (SOA) formation from α-pinene and β-pinene photooxidation: the role of highly oxygenated organic nitrates journal January 2020
A robust clustering algorithm for analysis of composition-dependent organic aerosol thermal desorption measurements journal January 2020
Double Bonds Are Key to Fast Unimolecular Reactivity in First-Generation Monoterpene Hydroxy Peroxy Radicals journal March 2020
Investigation of α-Pinene + Ozone Secondary Organic Aerosol Formation at Low Total Aerosol Mass journal June 2006
Inter-comparison of laboratory smog chamber and flow reactor systems on organic aerosol yield and composition journal January 2015
Direct Observations of Atmospheric Aerosol Nucleation journal February 2013
Hydroxyl radical-induced formation of highly oxidized organic compounds journal December 2016
Growth Kinetics and Size Distribution Dynamics of Viscous Secondary Organic Aerosol journal January 2018
Gas-phase products and secondary aerosol yields from the ozonolysis of ten different terpenes journal January 2006
α-pinene photooxidation under controlled chemical conditions – Part 2: SOA yield and composition in low- and high-NO x environments journal January 2012
Organic Aerosol Yields from α-Pinene Oxidation: Bridging the Gap between First-Generation Yields and Aging Chemistry journal October 2012
OH radical formation yields from the gas-phase reactions of O 3 with alkenes and monoterpenes journal December 1996
Evolution of Organic Aerosols in the Atmosphere journal December 2009
Secondary organic aerosol formation from isoprene photooxidation under high-NO x conditions : SOA FORMATION FROM ISOPRENE OXIDATION journal September 2005
The formation, properties and impact of secondary organic aerosol: current and emerging issues journal January 2009
Carbon oxidation state as a metric for describing the chemistry of atmospheric organic aerosol journal January 2011
Potential dual effect of anthropogenic emissions on the formation of biogenic secondary organic aerosol (BSOA) journal January 2019
SOA and gas phase organic acid yields from the sequential photooxidation of seven monoterpenes journal August 2018
Solar eclipse demonstrating the importance of photochemistry in new particle formation journal April 2017
High-resolution biogenic global emission inventory for the time period 2000–2019 for air quality modelling journal January 2022
The properties and behavior of α-pinene secondary organic aerosol particles exposed to ammonia under dry conditions journal January 2017
Field-Deployable, High-Resolution, Time-of-Flight Aerosol Mass Spectrometer journal December 2006
The link between organic aerosol mass loading and degree of oxygenation: an α-pinene photooxidation study journal January 2013
A large source of low-volatility secondary organic aerosol journal February 2014
Airborne Single Particle Mass Spectrometers (SPLAT II & miniSPLAT) and New Software for Data Visualization and Analysis in a Geo-Spatial Context journal January 2015
Effect of NO<sub>x</sub> level on secondary organic aerosol (SOA) formation from the photooxidation of terpenes journal January 2007
Recent advances in understanding secondary organic aerosol: Implications for global climate forcing: Advances in Secondary Organic Aerosol journal June 2017
Ozonolysis of α -pinene at atmospherically relevant concentrations: Temperature dependence of aerosol mass fractions (yields) journal January 2007
Effect of oxidant concentration, exposure time, and seed particles on secondary organic aerosol chemical composition and yield journal January 2015
Anthropogenic enhancements to production of highly oxygenated molecules from autoxidation journal March 2019
Formation of OH radicals in the gas phase reactions of O 3 with a series of terpenes journal January 1992
Photodegradation of α-Pinene Secondary Organic Aerosol Dominated by Moderately Oxidized Molecules journal May 2021
Online analysis of secondary organic aerosols from OH-initiated photooxidation and ozonolysis of α-pinene, β-pinene, Δ3-carene and d-limonene by thermal desorption–photoionisation aerosol mass spectrometry journal January 2017
Source characterization of highly oxidized multifunctional compounds in a boreal forest environment using positive matrix factorization journal January 2016
Loading-dependent elemental composition of α-pinene SOA particles journal January 2009
Chamber-based insights into the factors controlling epoxydiol (IEPOX) secondary organic aerosol (SOA) yield, composition, and volatility journal January 2019
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
Particle-Phase Diffusion Modulates Partitioning of Semivolatile Organic Compounds to Aged Secondary Organic Aerosol journal January 2020
Elemental ratio measurements of organic compounds using aerosol mass spectrometry: characterization, improved calibration, and implications journal January 2015
Modeling aerosol formation in alpha-pinene photo-oxidation experiments journal January 2008
Pathways to Highly Oxidized Products in the Δ3-Carene + OH System journal February 2022
Ambient aerosol sampling using the Aerodyne Aerosol Mass Spectrometer journal January 2003
Photolysis Controls Atmospheric Budgets of Biogenic Secondary Organic Aerosol journal March 2020
SOA formation from the photooxidation of  α -pinene: systematic exploration of the simulation of chamber data journal January 2016
Chemistry of secondary organic aerosol: Formation and evolution of low-volatility organics in the atmosphere journal May 2008
An Iodide-Adduct High-Resolution Time-of-Flight Chemical-Ionization Mass Spectrometer: Application to Atmospheric Inorganic and Organic Compounds journal May 2014
Production of extremely low volatile organic compounds from biogenic emissions: Measured yields and atmospheric implications journal May 2015