Online molecular characterization of fine particulate matter in Port Angeles, WA: Evidence for a major impact from residential wood smoke

Gaston, Cassandra J.; Lopez‐Hilfiker, Felipe D.; Whybrew, Lauren E.; Hadley, O. L.; McNair, Fran; Gao, Haixiao; Jaffe, Daniel A.; Thornton, Joel A.

doi:10.1016/j.atmosenv.2016.05.013

Cited by 53 publications

(71 citation statements)

References 55 publications

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“…Nitro-aromatic compounds have been observed at sites impacted by biomass burning before (Iinuma et al, 2010;Kitanovski et al, 2012Kitanovski et al, , 2014Mohr et al, 2013;Kahnt et al, 2013;Frka et al, 2016;Gaston et al, 2016) at concentration levels typically two orders of magnitude lower than that of levoglucosan (4-NC / LG ≈ 0.01-0.1, MNC / LG ≈ 0.01-0.08). Here, the 4-NC / LG and MNC / LG ratios vary from 0.25 to 0.5 and 0.06 to 0.15, respectively.…”

Section: Secondary Compoundsmentioning

confidence: 99%

Evolution of the chemical fingerprint of biomass burning organic aerosol during aging

et al. 2018

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Abstract. A thermal desorption aerosol gas chromatograph coupled to a high resolution -time of flight -aerosol mass spectrometer (TAG-AMS) was connected to an atmospheric chamber for the molecular characterization of the evolution of organic aerosol (OA) emitted by woodstove appliances for residential heating. Two log woodstoves (old and modern) and one pellet stove were operated under typical conditions. Emissions were aged during a time equivalent to 5 h of atmospheric aging. The five to seven samples were collected and analyzed with the TAG-AMS during each experiment. We detected and quantified over 70 compounds, including levoglucosan and nitrocatechols. We calculate the emission factor (EF) of these tracers in the primary emissions and highlight the influence of the combustion efficiency on these emissions. Smoldering combustion contributes to a higher EF and a more complex composition. We also demonstrate the effect of atmospheric aging on the chemical fingerprint. The tracers are sorted into three categories according to the evolution of their concentration: primary compounds, non-conventional primary compounds, and secondary compounds. For each, we provide a quantitative overview of their contribution to the OA mass at different times of the photooxidative process.

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Section: Secondary Compoundsmentioning

confidence: 99%

Evolution of the chemical fingerprint of biomass burning organic aerosol during aging

et al. 2018

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“…The Tmax shift phenomena have been observed in several FIGAERO-CIMS studies (D'Ambro et al, 2017;Gaston et al, 2016;Huang et al, 2018a;Lopez-Hilfiker et al, 2015;Thompson et al, 2017). Explanations vary for the observed Tmax shifts.…”

Section: Tmax Shiftmentioning

confidence: 91%

“…(Thompson et al, 2017), which could be due to the presence of isomers (Thompson et al, 2017), variations in filter loading, differences in aerosol viscosity 15 (Huang et al, 2018a), or interferences from oligomer decomposition products (Lopez-Hilfiker et al, 2014). Another Tmax shift example was reported for ambient biomass burning measurements, where the levoglucosan Tmax varied between 58 to 70 o C between 5 pm to 10 am over the course of the campaign (Gaston et al, 2016). Between 10 am to 7 pm, the levoglucosan Tmax was significantly higher at 100 o C, which was attributed to thermal decomposition of oligomers produced from acid-catalyzed heterogenous reactions, as indicated by the increase in sulfate ion intensities during the same period (Gaston et al, 2016).…”

Section: Tmax Shiftmentioning

confidence: 99%

“…Another Tmax shift example was reported for ambient biomass burning measurements, where the levoglucosan Tmax varied between 58 to 70 o C between 5 pm to 10 am over the course of the campaign (Gaston et al, 2016). Between 10 am to 7 pm, the levoglucosan Tmax was significantly higher at 100 o C, which was attributed to thermal decomposition of oligomers produced from acid-catalyzed heterogenous reactions, as indicated by the increase in sulfate ion intensities during the same period (Gaston et al, 2016). It 20 was not clear if the sulfate ions measured were derived from sulfuric acid or from the decomposition of (NH4)2SO4, which could change the assumption made for aerosol acidity.…”

Section: Tmax Shiftmentioning

confidence: 99%

“…Theory and operation of the CIMS are described in detail elsewhere (Aljawhary et al, 2013;Bertram et al, 2011;Lee et al, 2014;Wang and Hildebrandt Ruiz, 2017). The CIMS inlet is coupled to a filter inlet for gases and aerosols (FIGAERO), which has been 10 used in a number of studies to investigate the chemical composition and volatility of particle-phase compounds (D'Ambro et al, 2017;Gaston et al, 2016;Huang et al, 2018a;Lee et al, 2016;Lopez-Hilfiker et al, 2014Stark et al, 2017;Thompson et al, 2017). The FIGAERO system alternated between two operational modes.…”

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confidence: 99%

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Chlorine-initiated oxidation of n-alkanes under high NOx conditions: Insights into secondary organic aerosol composition and volatility using a FIGAERO-CIMS

Wang¹,

Ruiz²

2018

Preprint

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Abstract. Chlorine-initiated oxidation of n-alkanes (C8-12) under high nitrogen oxides conditions was investigated. Observed secondary organic aerosol yields (0.16 to 1.65) are higher than those for OH-initiated oxidation of C8-12 alkanes (0.04 to 0.35).A High-Resolution Time-of-Flight Chemical Ionization Mass Spectrometer coupled to a Filter Inlet for Gases and AEROsols (FIGAERO-CIMS) was used to characterize the gas-and particle-phase molecular composition. Chlorinated organics were 10 observed, which likely originated from chlorine addition to the double bond present on the heterogeneously produced dihydrofurans. A two-dimensional thermogram representation was developed to visualize composition and relative volatility of organic aerosol components using unit-mass resolution data. Evidence of oligomer formation, thermal fragmentation and thermal decomposition was observed. Aerosol yield and oligomer formation were suppressed under humid conditions (35 to 67 % RH) relative to dry conditions (under 5 % RH). The temperature at peak desorption signal, Tmax, a proxy for aerosol 15 volatility, was shown to change with aerosol filter loading, which should be constrained when evaluating aerosol volatilities using the FIGAERO-CIMS. Results suggest that long-chain anthropogenic alkanes could contribute significantly to ambient aerosol loading over their atmospheric lifetime.

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Emissions and source allocation of carbonaceous air pollutants from wood stoves in developed countries: A review

Olsen

Nøjgaard

Olesen

et al. 2020

Atmospheric Pollution Research

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Online molecular characterization of fine particulate matter in Port Angeles, WA: Evidence for a major impact from residential wood smoke

Cited by 53 publications

References 55 publications

Evolution of the chemical fingerprint of biomass burning organic aerosol during aging

Evolution of the chemical fingerprint of biomass burning organic aerosol during aging

Chlorine-initiated oxidation of n-alkanes under high NOx conditions: Insights into secondary organic aerosol composition and volatility using a FIGAERO-CIMS

Emissions and source allocation of carbonaceous air pollutants from wood stoves in developed countries: A review

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