One-year study of nitro-organic compounds and their relation to wood burning in PM10 aerosol from a rural site in Belgium

Kahnt, Ariane; Behrouzi, Shabnam; Vermeylen, Reinhilde; Shalamzari, Mohammad Safi; Vercauteren, Jordy; Roekens, Edward; Claeys, Magda; Maenhaut, Willy

doi:10.1016/j.atmosenv.2013.09.041

Cited by 117 publications

(132 citation statements)

References 38 publications

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“…Kitanovski et al, 20 (2012) reported a high correlation between concentrations of nitrocatechols and nitrosalicylic acids (R 2 >0.8) in urban PM. This suggests secondary formation of nitrosalicylic acids as well as biomass burning as the major emission source, similar to the previous reports on nitrocatechols (Iinuma et al, 2010;Kitanovski et al, 2012;Kahnt et al, 2013;Chow et al, 2016;Caumo et al, 2016).…”

Section: Nmah Concentrations and Distribution In Snow 15supporting

confidence: 78%

“…Nitrocatechols and nitrosalicylic acids are mainly secondary oxidation products of substituted phenols (alkylphenols, methoxyphenols, hydroxybenzoic acids) emitted in primary aerosols from biomass (e.g. wood) burning (Iinuma et al, 2007;Iinuma et al, 2010;Kitanovski et al, 2012;Kahnt et al, 2013;Chow et al, 2016). NMAHs are ecotoxic (Pflieger and Kroflič, 2017) while little is known about human toxicity (Huang et al, 1995;Harrison et al, 2005;Kovacic and Somanathan, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Snow scavenging and phase partitioning of nitrated and oxygenated aromatic hydrocarbons in polluted and remote environments in central Europe and the European Arctic

Shahpoury¹,

Kitanovski²,

Lammel³

2018

Preprint

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Nitrated and oxygenated polycyclic aromatic hydrocarbons (N/OPAHs) are emitted in combustion processes and formed in polluted air. Their precipitation cycling has hardly been studied. Fresh snow samples at urban and rural sites in central Europe, as well as surface snow from a remote site in Svalbard were analysed for 17 NPAHs, 9 OPAHs, and 11 nitrated mono-aromatic hydrocarbons (NMAHs), of which most N/OPAHs as well as nitrocatechols, 5 nitrosalicylic acids, and 4-nitroguaiacol are studied for the first time in precipitation. In order to better understand the scavenging mechanisms, the particulate mass fractions (Ө) at 273K were predicted using a multiphase gas-particle partitioning model based on polyparameter linear free energy relationships. ∑NPAH concentrations were 1.2-17.6 and 8.8-19.1 ng L -1 at urban and rural sites, whereas ∑OPAHs were 0.3-1.1 and 0.5-2.4 µg L -1 at these sites, respectively.Acenaphthoquinone and 9,10-anthraquinone were predominant in snow dissolved and particulate phase, respectively. 10 NPAHs were only found in the particulate phase with 9-nitroanthracene being predominant followed by 2-nitrofluoranthene. Among NMAHs, 4-nitrophenol showed the highest abundance in both phases. The levels found for nitrophenols were in the same range or lower than those reported in the 1980s and 1990s. The lowest levels of ∑OPAHs and ∑NMAHs were found at the remote site (9.2 and 390.5 ng L -1 , respectively). N/OPAHs preferentially partitioned in snow particulate phase in accordance with predicted Ө, whereas NMAHs were predominant in the 15 dissolved phase, regardless of Ө. It is concluded that the phase distribution of non-polar N/OPAHs in snow is determined by their gas-particle partitioning prior to snow scavenging, whereas that for polar particulate phase substances, i.e. NMAHs, is determined by an interplay between gas-particle partitioning in the aerosol, particle mass size distribution, and dissolution during in-or below-cloud scavenging.Atmos. Chem. Phys. Discuss., https://doi

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Section: Nmah Concentrations and Distribution In Snow 15supporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Snow scavenging and phase partitioning of nitrated and oxygenated aromatic hydrocarbons in polluted and remote environments in central Europe and the European Arctic

Shahpoury¹,

Kitanovski²,

Lammel³

2018

Preprint

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“…There was a significant but not strong correlation between pNOSs and levoglucosan in our study (R 2 > 0.27, p < 0.01), implying that BB events might enhance the pNOSs levels. 53 All these explained the higher levels of pNOSs observed in fall.…”

Section: Environmental Science and Technologymentioning

confidence: 92%

Organosulfates from Pinene and Isoprene over the Pearl River Delta, South China: Seasonal Variation and Implication in Formation Mechanisms

Ding

Wang

et al. 2014

Environ. Sci. Technol.

128

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Biogenic organosulfates (OSs) are important markers of secondary organic aerosol (SOA) formation involving cross reactions of biogenic precursors (terpenoids) with anthropogenic pollutants. Until now, there has been rare information about biogenic OSs in the air of highly polluted areas. In this study, fine particle (PM 2.5 ) samples were separately collected in daytime and nighttime from summer to fall 2010 at a site in the central Pearl River Delta (PRD), South China. Pinene-derived nitrooxyorganosulfates (pNOSs) and isoprene-derived OSs (iOSs) were quantified using a liquid chromatograph (LC) coupled with a tandem mass spectrometer (MS/MS) operated in negative electrospray ionization (ESI) mode. The pNOSs with MW 295 exhibited higher levels in fall (151 ± 86.9 ng m −3 ) than summer (52.4 ± 34.0 ng m −3 ), probably owing to the elevated levels of NOx and sulfate in fall when air masses mainly passed through city clusters in the PRD and biomass burning was enhanced. In contrast to observations elsewhere where higher levels occurred at nighttime, pNOS levels in the PRD were higher during the daytime in both seasons, indicating that pNOS formation was likely driven by photochemistry over the PRD. This conclusion is supported by several lines of evidence: the specific pNOS which could be formed through both daytime photochemistry and nighttime NO 3 chemistry exhibited no day− night variation in abundance relative to other pNOS isomers; the production of the hydroxynitrate that is the key precursor for this specific pNOS was found to be significant through photochemistry but negligible through NO 3 chemistry based on the mechanisms in the Master Chemical Mechanism (MCM). For iOSs, 2-methyltetrol sulfate ester which could be formed from isoprene-derived epoxydiols (IEPOX) under low-NOx conditions showed low concentrations (below the detection limit to 2.09 ng m −3 ), largely due to the depression of IEPOX formation by the high NOx levels over the PRD. ■ INTRODUCTIONBiogenic volatile organic compounds (BVOCs) including isoprene and monoterpenes 1 contribute significantly to the global secondary organic aerosol (SOA) budget. 2 Recent studies have shown that the conversion of BVOCs to SOA can be significantly promoted in the presence of high anthropogenic emissions. 3−6 As notable SOA products of BVOCs reacting with anthropogenic pollutants under acidic conditions, organosulfates (OSs) have been detected in both laboratory-generated SOA 7−10 and ambient aerosols. 11−18 Moreover, OSs could contribute a significant fraction of fine particles, accounting for up to 30% of organic matter (OM) 9,19−23 and up to 10% of total sulfate. 24,25 The formation mechanisms of OSs are still unclear. Previous chamber studies have demonstrated that both OH-photooxidation and NO 3 dark reactions can form pinene-derived nitrooxy-organosulfates (pNOSs) on acidic particles. 9 The pNOSs were only detected in nighttime samples in northeastern Bavaria, Germany, suggesting a role for nighttime NO 3 chemistry in pNOS formation. 15 How...

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“…Nitro-aromatic compounds have been observed at sites impacted by biomass burning before (Iinuma et al, 2010, Claeys et al, 2012, Kitanovski et al, 2012, Mohr et al, 2013, Kahnt et al, 2013, Kitanovski et al, 2014, Frka et al, 2016, Gaston et al, 2016 at concentration levels typically two orders of magnitude lower than that of levoglucosan (4-NC/LG ≈ Atmos. Chem.…”

Section: Secondary Compounds 15mentioning

confidence: 99%

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

Bertrand¹,

Stefenelli²,

Jen³

et al. 2018

Preprint

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Abstract. A Thermal Desorption Aerosol Gas Chromatograph coupled to a High Resolution -Time of Flight -AerosolMass Spectrometer (TAG-AMS) was connected to an atmospheric chamber for the molecular characterization of the evolution organic aerosol (OA) emitted by woodstoves appliances for residential heating. Two logwood stoves (old and modern) and one pellet stove were operated under typical conditions. Emissions were aged during a time equivalent to 5 hours of atmospheric aging. 5 to 7 samples were collected and analyzed with TAG-AMS during each experiment. We detect 5 and quantify over 70 compounds, including levoglucosan and nitrocatechols. We calculate the emission emissions factor (EF) of these tracers in the primary emissions and highlight the influence of the combustion efficiency on these emissions.Smoldering combustion contribute to higher EF and a more complex composition. We also demonstrate the effect of the

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One-year study of nitro-organic compounds and their relation to wood burning in PM10 aerosol from a rural site in Belgium

Cited by 117 publications

References 38 publications

Snow scavenging and phase partitioning of nitrated and oxygenated aromatic hydrocarbons in polluted and remote environments in central Europe and the European Arctic

Snow scavenging and phase partitioning of nitrated and oxygenated aromatic hydrocarbons in polluted and remote environments in central Europe and the European Arctic

Organosulfates from Pinene and Isoprene over the Pearl River Delta, South China: Seasonal Variation and Implication in Formation Mechanisms

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

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