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

Extreme Molecular Complexity Resulting in a Continuum of Carbonaceous Species in Biomass Burning Tar Balls from Wildfire Smoke

Journal Article · · ACS Earth and Space Chemistry
Biomass burning emits a wide range of carbonaceous particles into the atmosphere and has negative impacts on human health and the Earth’s radiative balance. Nonvolatile spherical organic aerosol particles, commonly known as tar balls, represent one of the most abundant particles in aged biomass burning smoke. However, the detailed molecular-level composition of ambient tar balls is largely unknown but critical to access their environmental impacts. Ambient aerosol samples collected during a wildfire event, which were ~90% tar balls by number fraction, were analyzed using ultrahigh resolution Orbitrap Elite mass spectrometry with four complementary ionization modes. Our results show the molecular composition of tar balls to be complex, composed of over 10,000 molecular formulas. Model estimated saturation mass concentrations and relative humidity dependent glass transition temperatures were consistent with low volatility and solid morphology as expected for tar balls. Room-temperature evaporation kinetics showed that these particles were composed of ~90% non-volatile species. The molecular complexity detected here signifies a continuum of carbonaceous species, ranging from C3 to C45 with continuous ranges of oxygenation and hydrogen saturation for each Cn. Approximately 24% of molecular formulas were estimated the be highly aromatic, which could indicate chemical compounds with negative health effects, and which may contribute to visible light absorption. The carbon continuum observed here has significant implications for the molecular characterization of atmospheric organic matter. The level of complexity detected here should not be ignored in future studies and we demonstrate that multiple analytical methods may be required to suitably interpret this complexity on a molecular level.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1830622
Report Number(s):
PNNL-SA--162549
Journal Information:
ACS Earth and Space Chemistry, Journal Name: ACS Earth and Space Chemistry Journal Issue: 10 Vol. 5; ISSN 2472-3452
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (76)

Chemical Characteristics of Organic Aerosols in Shanghai: A Study by Ultrahigh-Performance Liquid Chromatography Coupled With Orbitrap Mass Spectrometry: Organic Aerosols in Shanghai journal November 2017
Extreme isomeric complexity of dissolved organic matter found across aquatic environments: Extreme isomeric complexity of DOM journal February 2018
Practical implications of some recent studies in electrospray ionization fundamentals journal January 2001
From mass to structure: an aromaticity index for high-resolution mass data of natural organic matter journal February 2006
From mass to structure: an aromaticity index for high-resolution mass data of natural organic matter journal December 2015
Effects of climate change on snowpack and fire potential in the western USA journal February 2017
Airborne Single Particle Mass Spectrometers (SPLAT II & miniSPLAT) and New Software for Data Visualization and Analysis in a Geo-Spatial Context journal January 2015
Mutagenicity of mono-nitrobenzene derivatives in the Ames test and rec assay journal April 1986
Nitrated phenols in the atmosphere: a review journal January 2005
Chemistry of secondary organic aerosol: Formation and evolution of low-volatility organics in the atmosphere journal May 2008
Effects of anthropogenic emissions on the molecular composition of urban organic aerosols: An ultrahigh resolution mass spectrometry study journal June 2014
MFAssignR: Molecular formula assignment software for ultrahigh resolution mass spectrometry analysis of environmental complex mixtures journal December 2020
Molecular properties of deep-sea dissolved organic matter are predictable by the central limit theorem: Evidence from tandem FT-ICR-MS journal April 2017
Molecular epidemiology studies of carcinogenic environmental pollutants journal November 2003
Polycyclic aromatic hydrocarbons in biomass-burning emissions and their contribution to light absorption and aerosol toxicity journal October 2016
Polycyclic aromatic hydrocarbons and their derivatives (nitro-PAHs, oxygenated PAHs, and azaarenes) in PM 2.5 from Southern European cities journal October 2017
Metabolic activation of polycyclic and heterocyclic aromatic hydrocarbons and DNA damage: A review journal August 2005
Biomass burning — a review of organic tracers for smoke from incomplete combustion journal March 2002
Milestones in fourier transform ion cyclotron resonance mass spectrometry technique development journal December 2000
Atmospheric Pressure Photoionization Mass Spectrometry. Ionization Mechanism and the Effect of Solvent on the Ionization of Naphthalenes journal September 2002
Analysis of the Unresolved Organic Fraction in Atmospheric Aerosols with Ultrahigh-Resolution Mass Spectrometry and Nuclear Magnetic Resonance Spectroscopy: Organosulfates As Photochemical Smog Constituents journal October 2010
Unraveling the Mechanism of Electrospray Ionization journal November 2012
Orbitrap Mass Spectrometry journal May 2013
Advanced Solvent Based Methods for Molecular Characterization of Soil Organic Matter by High-Resolution Mass Spectrometry journal April 2015
Characterization of Highly Oxidized Molecules in Fresh and Aged Biogenic Secondary Organic Aerosol journal March 2016
Comprehensive Molecular Characterization of Atmospheric Brown Carbon by High Resolution Mass Spectrometry with Electrospray and Atmospheric Pressure Photoionization journal October 2018
Molecular Chemistry of Atmospheric Brown Carbon Inferred from a Nationwide Biomass Burning Event journal August 2017
The Brown–Black Continuum of Light-Absorbing Combustion Aerosols journal July 2018
Emissions of Levoglucosan, Methoxy Phenols, and Organic Acids from Prescribed Burns, Laboratory Combustion of Wildland Fuels, and Residential Wood Combustion journal April 2007
Generation of Reactive Oxygen Species Mediated by Humic-like Substances in Atmospheric Aerosols journal November 2011
Elemental Composition of HULIS in the Pearl River Delta Region, China: Results Inferred from Positive and Negative Electrospray High Resolution Mass Spectrometric Data journal June 2012
Organic Aerosols Associated with the Generation of Reactive Oxygen Species (ROS) by Water-Soluble PM 2.5 journal March 2015
Light Absorption by Charge Transfer Complexes in Brown Carbon Aerosols journal August 2014
Oxygenated Interface on Biomass Burn Tar Balls Determined by Single Particle Scanning Transmission X-ray Microscopy journal June 2007
Further Evidence for Charge Transfer Complexes in Brown Carbon Aerosols from Excitation–Emission Matrix Fluorescence Spectroscopy journal November 2014
Emission of trace gases and aerosols from biomass burning journal December 2001
Control of fossil-fuel particulate black carbon and organic matter, possibly the most effective method of slowing global warming journal January 2002
A technology-based global inventory of black and organic carbon emissions from combustion journal January 2004
Atmospheric tar balls: Particles from biomass and biofuel burning: ATMOSPHERIC TAR BALLS journal March 2004
Carbon oxidation state as a metric for describing the chemistry of atmospheric organic aerosol journal January 2011
Morphology and mixing state of individual freshly emitted wildfire carbonaceous particles journal July 2013
The viscosity of atmospherically relevant organic particles journal March 2018
Effect of viscosity on photodegradation rates in complex secondary organic aerosol materials journal January 2016
Identification of water-soluble organic carbon in non-urban aerosols using ultrahigh-resolution FT-ICR mass spectrometry: organic anions journal January 2012
Climate change presents increased potential for very large fires in the contiguous United States journal January 2015
Evaporation kinetics and phase of laboratory and ambient secondary organic aerosol journal January 2011
Spherical tarball particles form through rapid chemical and physical changes of organic matter in biomass-burning smoke journal September 2019
Separation of brown carbon from black carbon for IMPROVE and Chemical Speciation Network PM 2.5 samples journal August 2017
Warming and Earlier Spring Increase Western U.S. Forest Wildfire Activity journal August 2006
Brown Carbon Spheres in East Asian Outflow and Their Optical Properties journal August 2008
Getting to the Critical Nucleus of Aerosol Formation journal June 2010
Black carbon lofts wildfire smoke high into the stratosphere to form a persistent plume journal August 2019
Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and 1H NMR journal June 2016
Brown carbon in tar balls from smoldering biomass combustion journal January 2010
Atmospheric organic matter in clouds: exact masses and molecular formula identification using ultrahigh-resolution FT-ICR mass spectrometry journal January 2013
Distinguishing molecular characteristics of aerosol water soluble organic matter from the 2011 trans-North Atlantic US GEOTRACES cruise journal January 2014
Molecular characterization of free tropospheric aerosol collected at the Pico Mountain Observatory: a case study with a long-range transported biomass burning plume journal January 2015
Molecular corridors and parameterizations of volatility in the chemical evolution of organic aerosols journal January 2016
Molecular transformations of phenolic SOA during photochemical aging in the aqueous phase: competition among oligomerization, functionalization, and fragmentation journal January 2016
Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water journal January 2017
Light absorption by polar and non-polar aerosol compounds from laboratory biomass combustion journal January 2018
Formation and evolution of tar balls from northwestern US wildfires journal January 2018
Evidence for pyrazine-based chromophores in cloud water mimics containing methylglyoxal and ammonium sulfate journal January 2018
Molecular insights on aging and aqueous-phase processing from ambient biomass burning emissions-influenced Po Valley fog and aerosol journal January 2018
Molecular and physical characteristics of aerosol at a remote free troposphere site: implications for atmospheric aging journal January 2018
Emissions from village cookstoves in Haryana, India, and their potential impacts on air quality journal January 2018
Molecular composition of particulate matter emissions from dung and brushwood burning household cookstoves in Haryana, India journal January 2018
Predicting the glass transition temperature and viscosity of secondary organic material using molecular composition journal January 2018
Dynamic changes in optical and chemical properties of tar ball aerosols by atmospheric photochemical aging journal January 2019
Around the world in 17 days - hemispheric-scale transport of forest fire smoke from Russia in May 2003 journal January 2004
Organic aerosol and global climate modelling: a review journal January 2005
A review of biomass burning emissions part II: intensive physical properties of biomass burning particles journal January 2005
A review of biomass burning emissions part III: intensive optical properties of biomass burning particles journal January 2005
Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols journal January 2006
Oligomers, organosulfates, and nitrooxy organosulfates in rainwater identified by ultra-high resolution electrospray ionization FT-ICR mass spectrometry journal January 2009
A review of biomass burning emissions, part I: gaseous emissions of carbon monoxide, methane, volatile organic compounds, and nitrogen containing compounds journal January 2005

Similar Records

Morphology and mixing state of individual freshly emitted wildfire carbonaceous particles
Journal Article · Wed Jul 03 20:00:00 EDT 2013 · Nature Communications · OSTI ID:1623918

Ultrahigh performance LC/FT-MS non-targeted screening for biomass burning organic aerosol with MZmine2 and MFAssignR
Journal Article · Wed Jul 05 20:00:00 EDT 2023 · Chemosphere · OSTI ID:2000836

Formation and evolution of Tar Balls from Northwestern US wildfires
Journal Article · Mon Jan 29 19:00:00 EST 2018 · Atmospheric Chemistry and Physics Discussions (Online) · OSTI ID:1424981