Characterization of fresh and aged organic aerosol emissions from meat charbroiling

Kaltsonoudis, Christos; Kostenidou, Evangelia; Louvaris, Evangelos; Psichoudaki, Magda; Tsiligiannis, Epameinondas; Florou, Kalliopi; Liangou, Aikaterini; Pandis, Spyros N.

doi:10.5194/acp-2016-979

Cited by 11 publications

(18 citation statements)

References 11 publications

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“…Figure 7 shows the evolution of O : C ratios and OS c of SOA from heated cooking oils as a O : C ratios and OS c of SOA from heated cooking oils as a function of OH exposure, together with the POA data. The O : C ratios and OS c of POA were in the range of 0.14 to 0.23 and −1.61 to −1.44, respectively, comparable to those of POA from meat charbroiling (Kaltsonoudis et al, 2016). As shown in Fig.…”

Section: Chemical Composition Of Soamentioning

confidence: 51%

“…The mass spectra of cooking SOA also greatly resemble POA and field-derived COA in ambient air, with R 2 ranging from 0.74 to 0.88. Kaltsonoudis et al (2016) also observed that the ambient COA factor in two major Greek cities in spring and summer strongly resembled the aged SOA from meat charbroiling in a smog chamber.…”

Section: Soa Production Ratementioning

confidence: 79%

“…Cooking may be a large source of SOA in urban areas, yet the formation of SOA from cooking remains poorly understood. Kaltsonoudis et al (2016) observed that the oxygen to carbon ratio (O : C) of OA from meat charbroiling increased from 0.09 to 0.30 after a few hours of chemical aging. The aged aerosol mass spectra have similarities with ambient COA factors in two major Greek cities.…”

Section: Introductionmentioning

confidence: 99%

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Formation of secondary organic aerosols from gas-phase emissions of heated cooking oils

Liu

Chan

et al. 2017

Atmos. Chem. Phys.

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Abstract. Cooking emissions can potentially contribute to secondary organic aerosol (SOA) but remain poorly understood. In this study, formation of SOA from gas-phase emissions of five heated vegetable oils (i.e., corn, canola, sunflower, peanut and olive oils) was investigated in a potential aerosol mass (PAM) chamber. Experiments were conducted at 19-20 • C and 65-70 % relative humidity (RH). The characterization instruments included a scanning mobility particle sizer (SMPS) and a high-resolution time-offlight aerosol mass spectrometer (HR-TOF-AMS). The efficiency of SOA production, in ascending order, was peanut oil, olive oil, canola oil, corn oil and sunflower oil. The major SOA precursors from heated cooking oils were related to the content of monounsaturated fat and omega-6 fatty acids in cooking oils. The average production rate of SOA, after aging at an OH exposure of 1.7 × 10 11 molecules cm −3 s, was 1.35±0.30 µg min −1 , 3 orders of magnitude lower compared with emission rates of fine particulate matter (PM 2.5 ) from heated cooking oils in previous studies. The mass spectra of cooking SOA highly resemble field-derived COA (cookingrelated organic aerosol) in ambient air, with R 2 ranging from 0.74 to 0.88. The average carbon oxidation state (OS c ) of SOA was −1.51 to −0.81, falling in the range between ambient hydrocarbon-like organic aerosol (HOA) and semivolatile oxygenated organic aerosol (SV-OOA), indicating that SOA in these experiments was lightly oxidized.

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Section: Chemical Composition Of Soamentioning

confidence: 51%

Section: Soa Production Ratementioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

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Formation of secondary organic aerosols from gas-phase emissions of heated cooking oils

Liu

Chan

et al. 2017

Atmos. Chem. Phys.

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“…Finally, a series of gas monitors was used for the measurement of the mixing ratios of the nitrogen oxides (NO and NO 2 ), ozone (O 3 ), carbon monoxide (CO), and carbon dioxide (CO 2 ) (Teledyne models T201, 400E, 300E, and T360, respectively). Further online instrument descriptions and operating conditions are discussed in Kaltsonoudis et al ( 40 ).…”

Section: Methodsmentioning

confidence: 99%

Rapid dark aging of biomass burning as an overlooked source of oxidized organic aerosol

Kodros

Papanastasiou

Paglione

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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Oxidized organic aerosol (OOA) is a major component of ambient particulate matter, substantially impacting climate, human health, and ecosystems. OOA is readily produced in the presence of sunlight, and requires days of photooxidation to reach the levels observed in the atmosphere. High concentrations of OOA are thus expected in the summer; however, our current mechanistic understanding fails to explain elevated OOA during wintertime periods of low photochemical activity that coincide with periods of intense biomass burning. As a result, atmospheric models underpredict OOA concentrations by a factor of 3 to 5. Here we show that fresh emissions from biomass burning exposed to NO2 and O3 (precursors to the NO3 radical) rapidly form OOA in the laboratory over a few hours and without any sunlight. The extent of oxidation is sensitive to relative humidity. The resulting OOA chemical composition is consistent with the observed OOA in field studies in major urban areas. Additionally, this dark chemical processing leads to significant enhancements in secondary nitrate aerosol, of which 50 to 60% is estimated to be organic. Simulations that include this understanding of dark chemical processing show that over 70% of organic aerosol from biomass burning is substantially influenced by dark oxidation. This rapid and extensive dark oxidation elevates the importance of nocturnal chemistry and biomass burning as a global source of OOA.

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“…The angle θ is a more sensitive metric for AMS mass spectra comparison that are often quite similar to each other. After the publication of Kostenidou et al (2009) the angle theta has been used in many other publications (e.g., Kaltsonoudis et al, 2017ACP, Florou et al, 2017ACP, Paciga et al, 2016, for AMS mass spectra comparisons. We have already stated in the Table 2 caption the reference of Kostenidou et al (2009) and that: "The angle θ provides a better comparison for small differences in the mass spectra (when R2 is less than 0.97)."…”

Section: Interactive Commentmentioning

confidence: 99%

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Kostenidou¹

2021

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The manuscript acp-2020-842 by Kostenidou et al. presents a relatively comprehensive analysis of emissions from Euro 5 diesel and GDI vehicles. The work is well done, thoroughly discussed, and presents useful data. However, the manuscript is possibly more suited to a journal focused on emissions and air quality, as it represents incremental progress. However, ACP has published similar work before. This decision is C1 ACPD Interactive commentPrinter-friendly version Discussion paper ultimately the Editor's. However, considering the thorough analysis and useful data, I would recommend publication in ACP after the following revisions. Major comments1.The manuscript is not a technical note in my opinion. The analysis and literature discussion are thorough. There are no new technical advances. The label does not seem appropriate.The authors fully agree with the reviewer, this is a research article, and indeed we sent it to ACP as a research paper. The categorization as "technical note" has been suggested by an Executive Editor of ACP, we could not do much about it.2. The abstract, manuscript, and figures do not emphasize enough that the diesel engines used DPFs while the gasoline engines did not. Of course, particulate emissions were lower after the DPFs. comment Printer-friendly version Discussion paper ionization in the AMS, and that the AMS results agreed well both with photoelectric aerosol sensor (PAS) measurements and also GC-MS offline filter samples for several PAHs and few methyl-PAHs. The results of the intercomparison gave an uncertainty of +35% and −38%. More recently Hartikainen et al. (2020) applied Herring et al. (2015 method to PAHs in fresh and aged residential wood combustion emissions. It is true that for alkyl-and nitro-PAHs more fragmentation is expected.The authors consider that Herring et al. ( 2015) is a quite reliable method for PAHs identification and estimation with the advantage of being an online technique, issue remains for nitro-PAHs and some alkyl-PAHs. The authors will be careful and will rather use the term estimate and identification instead of quantification. A recent work from Yang et al. (2018) measured PAHs and functionalized PAHs both in the gas phase and particle phase emitted from GDI cars. The authors used Teflon filters for particle bound PAHs and used GC/MS. For NO2-PAHs they used CI negative mode GC-MS. Their results are discussed in the EFs PAHs and are, in general, in good agreement to what found in our work. Surprisingly low NO2-PAHs were found by Yang et al. (2018) for GDI vehicles (1% of the total PAHs).

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Characterization of fresh and aged organic aerosol emissions from meat charbroiling

Cited by 11 publications

References 11 publications

Formation of secondary organic aerosols from gas-phase emissions of heated cooking oils

Formation of secondary organic aerosols from gas-phase emissions of heated cooking oils

Rapid dark aging of biomass burning as an overlooked source of oxidized organic aerosol

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