Downwind particulate matters: Regulatory implications of secondary aerosol formation from the interaction of nitrogen oxides and tree emissions

Fry, Juliane L.; Koski, Chris; Bott, Kristin; Hsu-Flanders, Raphaela; Hazell, Marisa

doi:10.1016/j.envsci.2015.02.017

Cited by 3 publications

(1 citation statement)

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“…On average in the United States, α-pinene is the most dominant monoterpene emission, but β-pinene, 3 -carene, and limonene ( Fig. 1) are also prevalent and are emitted equally or more than α-pinene in some regions (Geron et al, 2000). While most VOCs are biogenic, the majority of atmospheric oxidants are anthropogenically sourced, and thus human activity is highly influential on SOA production (Carlton et al, 2010;Hoyle et al, 2011;Xu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO2

et al. 2015

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Abstract. The effect of NO2 on secondary organic aerosol (SOA) formation from ozonolysis of α-pinene, β-pinene, Δ3-carene, and limonene was investigated using a dark flow-through reaction chamber. SOA mass yields were calculated for each monoterpene from ozonolysis with varying NO2 concentrations. Kinetics modeling of the first-generation gas-phase chemistry suggests that differences in observed aerosol yields for different NO2 concentrations are consistent with NO3 formation and subsequent competition between O3 and NO3 to oxidize each monoterpene. α-Pinene was the only monoterpene studied that showed a systematic decrease in both aerosol number concentration and mass concentration with increasing [NO2]. β-Pinene and Δ3-carene produced fewer particles at higher [NO2], but both retained moderate mass yields. Limonene exhibited both higher number concentrations and greater mass concentrations at higher [NO2]. SOA from each experiment was collected and analyzed by HPLC-ESI-MS, enabling comparisons between product distributions for each system. In general, the systems influenced by NO3 oxidation contained more high molecular weight products (MW > 400 amu), suggesting the importance of oligomerization mechanisms in NO3-initiated SOA formation. α-Pinene, which showed anomalously low aerosol mass yields in the presence of NO2, showed no increase in these oligomer peaks, suggesting that lack of oligomer formation is a likely cause of α-pinene's near 0 % yields with NO3. Through direct comparisons of mixed-oxidant systems, this work suggests that NO3 is likely to dominate nighttime oxidation pathways in most regions with both biogenic and anthropogenic influences. Therefore, accurately constraining SOA yields from NO3 oxidation, which vary substantially with the volatile organic compound precursor, is essential in predicting nighttime aerosol production.

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Section: Introductionmentioning

confidence: 99%

A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO2

et al. 2015

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Spatial Simulation of Secondary Organic Aerosol Formation From the Reaction of BVOCs and Nitrogen Oxides in Guangdong, China

Zheng

Wang

2019

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium

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Secondary organic aerosol (SOA) yields from NO3 radical + isoprene based on nighttime aircraft power plant plume transects

et al. 2018

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Abstract. Nighttime reaction of nitrate radicals (NO 3 ) with biogenic volatile organic compounds (BVOC) has been proposed as a potentially important but also highly uncertain source of secondary organic aerosol (SOA). The southeastern United States has both high BVOC and nitrogen oxide (NO x ) emissions, resulting in a large model-predicted NO 3 -BVOC source of SOA. Coal-fired power plants in this region constitute substantial NO x emissions point sources into a nighttime atmosphere characterized by high regionally widespread concentrations of isoprene. In this paper, we exploit nighttime aircraft observations of these power plant plumes, in which NO 3 radicals rapidly remove isoprene, to obtain field-based estimates of the secondary organic aerosol yield from NO 3 + isoprene. Observed in-plume increases in nitrate aerosol are consistent with organic nitrate aerosol production from NO 3 + isoprene, and these are used to determine molar SOA yields, for which the average over nine plumes is 9 % (±5 %). Corresponding mass yields depend on the assumed molecular formula for isoprene-NO 3 -SOA, but the average over nine plumes is 27 % (±14 %), on average larger than those previously measured in chamber studies (12 %-14 % mass yield as OA / VOC after oxidation of both double bonds). Yields are larger for longer plume ages. This suggests that ambient aging processes lead more effectively to condensable material than typical chamber conditions allow. We discuss potential mechanistic explanations for this difference, including longer ambient peroxy radical lifetimes and heterogeneous reactions of NO 3 -isoprene gas phase products. More in-depth studies are needed to better understand the aerosol yield and oxidation mechanism of NO 3 radical + isoprene, a coupled anthropogenic-biogenic source of SOA that may be regionally significant.

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Downwind particulate matters: Regulatory implications of secondary aerosol formation from the interaction of nitrogen oxides and tree emissions

Cited by 3 publications

References 41 publications

A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO<sub>2</sub>

A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO<sub>2</sub>

Spatial Simulation of Secondary Organic Aerosol Formation From the Reaction of BVOCs and Nitrogen Oxides in Guangdong, China

Secondary organic aerosol (SOA) yields from NO<sub>3</sub> radical + isoprene based on nighttime aircraft power plant plume transects

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Downwind particulate matters: Regulatory implications of secondary aerosol formation from the interaction of nitrogen oxides and tree emissions

Cited by 3 publications

References 41 publications

A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO&lt;sub&gt;2&lt;/sub&gt;

A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO&lt;sub&gt;2&lt;/sub&gt;

Spatial Simulation of Secondary Organic Aerosol Formation From the Reaction of BVOCs and Nitrogen Oxides in Guangdong, China

Secondary organic aerosol (SOA) yields from NO&lt;sub&gt;3&lt;/sub&gt; radical + isoprene based on nighttime aircraft power plant plume transects

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A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO<sub>2</sub>

A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO<sub>2</sub>

Secondary organic aerosol (SOA) yields from NO<sub>3</sub> radical + isoprene based on nighttime aircraft power plant plume transects