Observations of gas- and aerosol-phase organic nitrates at BEACHON-RoMBAS 2011

Fry, Juliane L.; Draper, Danielle C.; Zarzana, Kyle J.; Campuzano‐Jost, Pedro; Day, Douglas A.; Jimenez, José L.; Brown, Steven S.; Cohen, R. C.; Kaser, L.; Hansel, Armin; Cappellin, Luca; Karl, T.; Hodzic, Alma; Turnipseed, Andrew A.; Cantrell, C. A.; Lefer, B. L.; Grossberg, N.

doi:10.5194/acp-13-8585-2013

Cited by 193 publications

(246 citation statements)

References 84 publications

Supporting

Mentioning

226

Contrasting

Order By: Relevance

“…Phys. (Farmer et al, 2010) pRONO 2 (Fry et al, 2013) conservative approach DL=0.1µg m -3 (Bruns et al, 2010) pRONO 2 lower limit pRONO 2 upper limit Figure 9. Vertical profiles of (a) calculated lower and upper limits of organic nitrate mass concentration (approach Sect.…”

Section: Particulate Organic Nitratementioning

confidence: 99%

“…Polluted urban regions are often dominated by inorganic nitrates (Farmer et al, 2010). However, in rural forested areas a dominance of particulate organic nitrates formed from oxidation of monoterpenes was reported (Fry et al, 2013). A recent 25 study from the Amazon showed with measurements at ground level that up to 87 % of the total nitrate can be attributed to organic nitrate .…”

mentioning

confidence: 99%

“…For our instrument its value lies between 1.49 and 1.56 with a mean and standard deviation value of 1.52 ± 0.03 and is derived from calibration measurements during the campaign. For organic nitrates the literature presents a range of ratios of NO + to NO + 2 that are higher than the ratio for inorganic nitrates and lie between 5 and 12.5 (e.g., Farmer et al, 2010;Fry et al, 2009Fry et al, , 201120 Rollins et al, 2009;Bruns et al, 2010;Boyd et al, 2015).…”

mentioning

confidence: 99%

“…Many studies reported on the difficulties to measure organic 10 nitrates quantitatively, but suggested also a possibility to estimate the amount or at least the presence of organic nitrates based on the measured ion ratios of NO + to NO + 2 using aerosol mass spectrometry (e.g., Bruns et al, 2010;Farmer et al, 2010;Rollins et al, 2010;Fry et al, 2013;Ayres et al, 2015;Kiendler-Scharr et al, 2016;Ng et al, 2017;Schneider et al, 2017).…”

mentioning

confidence: 99%

“…-The fourth estimation method is described by Fry et al (2013) and links the ratios determined for inorganic and organic nitrate. The ratios of NO + to NO + 2 calculated for inorganic and organic nitrate are instrument specific, but a proportional 25 co-variation is observed.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Aircraft-based observations of isoprene epoxydiol-derived secondary organic aerosol (IEPOX-SOA) in the tropical upper troposphere over the Amazon region

Schulz¹,

Schneider²,

Holanda³

et al. 2018

Preprint

View full text Add to dashboard Cite

Abstract. During the ACRIDICON-CHUVA field project (September -October 2014; based in Manaus, Brazil) aircraftbased in-situ measurements of aerosol chemical composition were conducted in the tropical troposphere over the Amazon using the High Altitude and Long Range Research Aircraft (HALO), covering altitudes from the boundary layer height up to 14.4 km. The submicron non-refractory aerosol was characterized by flash-vaporization/electron impact-ionization aerosol particle mass spectrometry. The results show that significant secondary organic aerosol (SOA) formation by isoprene oxidation 5 products occurs in the upper troposphere, leading to increased organic aerosol mass concentrations above 10 km altitude.The median organic mass concentrations in the upper troposphere above 10 km range between 1.0 and 2.1 µg m −3 (referring to standard temperature and pressure; STP) with interquartile ranges of 0.6 to 3.0 µg m −3 (STP), representing 70 % of the total submicron non-refractory aerosol particle mass. The presence of isoprene epoxydiol-derived isoprene secondary organic aerosol (IEPOX-SOA) was confirmed by marker peaks in the mass spectra. We estimate the contribution of IEPOX-SOA to the 10 total organic aerosol in the upper troposphere to be about 20 %. After isoprene emission from vegetation, oxidation processes 1 Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2018-232 Manuscript under review for journal Atmos. Chem. Phys. Discussion started: 9 April 2018 c Author(s) 2018. CC BY 4.0 License. occur at low altitudes and/or during transport to higher altitudes, which may lead to the formation of IEPOX (one oxidation product of isoprene). Reactive uptake or condensation of IEPOX on pre-existing particles leads to IEPOX-SOA formation and subsequently increasing organic mass in the upper troposphere. This organic mass increase was accompanied by an increase of the nitrate mass concentrations, most likely due to NO x production by lightning. We further found that the ammonium contained in the aerosol particles is not sufficient to neutralize the particulate sulfate and nitrate. Analysis of the ion ratio of 5 NO + to NO + 2 indicated that nitrate in the upper troposphere exists mainly in the form of organic nitrate. IEPOX-SOA and organic nitrates are coincident with each other, indicating that IEPOX-SOA forms in the upper troposphere either on acidic nitrate particles forming organic nitrates derived from IEPOX or on already neutralized organic nitrate aerosol particles.

show abstract

Section: Particulate Organic Nitratementioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Aircraft-based observations of isoprene epoxydiol-derived secondary organic aerosol (IEPOX-SOA) in the tropical upper troposphere over the Amazon region

Schulz¹,

Schneider²,

Holanda³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

Estimating the contribution of organic acids to northern hemispheric continental organic aerosol

Yatavelli

Mohr

Stark

et al. 2015

Geophysical Research Letters

View full text Add to dashboard Cite

Using chemical ionization mass spectrometry to detect particle‐phase acids and aerosol mass spectrometry (AMS) measurements from Colorado, USA, and two studies in Hyytiälä, Finland, we quantify the fraction of organic aerosol (OA) mass that is composed of molecules with acid functional groups (facid). Molecules containing one or more carboxylic acid functionality contributed approximately 29% (45–51%) of the OA mass in Colorado (Finland). Organic acid mass concentration correlates well with AMS m/z 44 (primarily CO2+), a commonly used marker for highly oxidized aerosol. Using the average empirical relationship between AMS m/z 44 and organic acids in these three studies, together with m/z 44 data from 29 continental northern hemispheric (NH) AMS data sets, we estimate that molecules containing carboxylic acid functionality constitute on average 28% (range 10–50%) of NH continental OA mass with typically higher values at rural/remote sites and during summer and lower values at urban sites and during winter.

show abstract

Influences of upwind emission sources and atmospheric processing on aerosol chemistry and properties at a rural location in the Northeastern U.S.

Zhou

Collier

et al. 2016

JGR Atmospheres

View full text Add to dashboard Cite

Continuous real-time measurements of atmospheric aerosol with an Aerodyne high-resolution time-of-flight aerosol mass spectrometer coupled with a fast temperature-stepping thermodenuder were carried out in summer 2011 at Brookhaven National Laboratory (BNL, 40.871°N, 72.89°W) during the Department of Energy Aerosol Life Cycle Intensive Operational Period campaign. BNL was frequently downwind of emissions from the New York metropolitan area and was exposed to various combinations of anthropogenic, biogenic, and marine emissions based on air mass history. The average concentration of submicrometer aerosol (PM1) during this study was 12.6 μg m À3 with 64% of the mass being organic. Organic aerosol (OA) at BNL was found to be overwhelmingly secondary, consisting of (1) a fresher, semivolatile oxygenated organic aerosol (SV-OOA; oxygen-to-carbon ratio (O/C) = 0.54; 63% of OA mass) that was strongly influenced by transported urban plumes; (2) a regional, more aged, low-volatility OOA (LV-OOA; O/C = 0.97; 29% of OA mass) influenced by aqueous-phase processing; and (3) a nitrogen-enriched OA (NOA; nitrogen-to-carbon ratio (N/C) = 0.185; 8% of OA mass) likely composed of amine salts formed from acid-base reactions in industrial emissions. Urban emissions from the New York metropolitan areas to the W and SW in particular led to elevated PM 1 mass concentration and altered aerosol composition at BNL. Transported urban plumes and local biogenic emissions likely interacted to enhance secondary organic aerosol production, primarily represented by SV-OOA. These results suggest an important role that urban anthropogenic emissions play in affecting ambient PM concentration, composition, and physical-chemical properties at rural areas in the Northeast U.S. URBAN INFLUENCE ON RURAL AEROSOL 6049

show abstract

Observations of gas- and aerosol-phase organic nitrates at BEACHON-RoMBAS 2011

Cited by 193 publications

References 84 publications

Aircraft-based observations of isoprene epoxydiol-derived secondary organic aerosol (IEPOX-SOA) in the tropical upper troposphere over the Amazon region

Aircraft-based observations of isoprene epoxydiol-derived secondary organic aerosol (IEPOX-SOA) in the tropical upper troposphere over the Amazon region

Estimating the contribution of organic acids to northern hemispheric continental organic aerosol

Influences of upwind emission sources and atmospheric processing on aerosol chemistry and properties at a rural location in the Northeastern U.S.

Contact Info

Product

Resources

About