Role of the reaction of stabilized Criegee intermediates with peroxy radicals in particle formation and growth in air

Zhao, Yue; Wingen, L. M.; Perraud, Véronique; Greaves, John; Finlayson-Pitts, Barbara J.

doi:10.1039/c5cp01171j

Cited by 88 publications

(91 citation statements)

References 100 publications

(225 reference statements)

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“…Several mechanisms for oligomer product formation in SOA arising from VOC oxidation have been proposed: i) self-and cross-reactions of the peroxy radicals (RO 2 ) (Zhang et al, 2016), ii) reaction of ozonolysis products in the condensed-phase, such as aldol condensation, esterification, hemiacetal and peroxyhemiacetal formation (Ziemann, 2003;Tolocka et al, 2004;Kristensen et al, 2014;Docherty et al, 2005;Muller et al, 2009;Yasmeen et al, 2010;Hall and Johnston, 2012;Witkowski and Gierczak, 2012;DePalma et al, 2013;Lim and Turpin, 2015), iii) dimer cluster formation from carboxylic acids 15 (Hoffmann et al, 1998;Tobias and Ziemann, 2000;Claeys et al, 2009;Camredon et al, 2010;DePalma et al, 2013), iv) reactions of Criegee intermediates (CIs) with VOCs oxidation products (Bonn et al, 2002;Lee and Kamens, 2005;Tolocka et al, 2006;Heaton et al, 2007;Witkowski and Gierczak, 2012;Kristensen et al, 2016;Wang et al, 2016), and vi) reactions of RO 2 radicals with Cis (Sadezky et al, 2008;Zhao et al, 2015). Among them, the reactions of CIs with protic substances (water, alcohols, acids and hydroperoxides) can form ROOH.…”

Section: (A)mentioning

confidence: 99%

Identification of Organic Hydroperoxides and Peroxy Acids Using Atmospheric Pressure Chemical Ionization – Tandem Mass Spectrometry (APCI-MS/MS): Application to Secondary Organic Aerosol

Zhou¹,

Rivera-Rios²,

Keutsch³

et al. 2018

Preprint

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Abstract.Molecules with hydroperoxide functional groups are of extreme importance to both the atmospheric and biological 10 chemistry fields. In this work, an analytical method is presented for the identification of organic hydroperoxides and peroxy and peracetic acid), as well as the ROOH formed from the reactions of H 2 O 2 with aldehydes (i.e. acetaldehyde, hexanal, glyoxal and methylglyoxal). This new ROOH detection method was applied to methanol extracts of secondary organic aerosol (SOA) material generated from ozonolysis of α-pinene, indicating a number of ROOH molecules in the SOA material. While the full scan mass spectrum of SOA demonstrates the presence of monomers (m/z=80-250), dimers (m/z=250-450) and trimers (m/z=450-600), the neutral loss scan shows that the ROOH products all have masses less than 20 300 Da, indicating that ROOH molecules may not contribute significantly to the SOA oligomeric content. We anticipate this method could also be applied to biological systems with considerable value.

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Section: (A)mentioning

confidence: 99%

Identification of Organic Hydroperoxides and Peroxy Acids Using Atmospheric Pressure Chemical Ionization – Tandem Mass Spectrometry (APCI-MS/MS): Application to Secondary Organic Aerosol

Zhou¹,

Rivera-Rios²,

Keutsch³

et al. 2018

Preprint

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“…In a third study of SOA from α-pinene ozonolysis, Kidd et al (2014) showed that particles in the 250-500 nm range contained a greater fraction of oligomers, while particles greater than 500 nm contained a greater fraction of monomers. Molecular composition measurements by Zhao et al (2015) of size-selected particles produced by trans-3-hexene ozonolysis showed that particles smaller than 100 nm contained a greater fraction of high-MW oligomers than particles larger than 100 nm. With the exception of Kidd et al, which focused on much larger particle sizes than the rest, the above experiments are consistent with the concept that higher-MW, lower-volatility species formed in the gas phase are more strongly represented in smaller-diameter particles, as would be expected from a condensation-driven process.…”

Section: Introductionmentioning

confidence: 99%

Particle size dependence of biogenic secondary organic aerosol molecular composition

Johnston

2017

Atmos. Chem. Phys.

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Abstract. Formation of secondary organic aerosol (SOA) is initiated by the oxidation of volatile organic compounds (VOCs) in the gas phase whose products subsequently partition to the particle phase. Non-volatile molecules have a negligible evaporation rate and grow particles at their condensation rate. Semi-volatile molecules have a significant evaporation rate and grow particles at a much slower rate than their condensation rate. Particle phase chemistry may enhance particle growth if it transforms partitioned semi-volatile molecules into non-volatile products. In principle, changes in molecular composition as a function of particle size allow non-volatile molecules that have condensed from the gas phase (a surface-limited process) to be distinguished from those produced by particle phase reaction (a volume-limited process). In this work, SOA was produced by β-pinene ozonolysis in a flow tube reactor. Aerosol exiting the reactor was size-selected with a differential mobility analyzer, and individual particle sizes between 35 and 110 nm in diameter were characterized by on-and offline mass spectrometry. Both the average oxygen-to-carbon (O / C) ratio and carbon oxidation state (OSc) were found to decrease with increasing particle size, while the relative signal intensity of oligomers increased with increasing particle size. These results are consistent with oligomer formation primarily in the particle phase (accretion reactions, which become more favored as the volume-to-surface-area ratio of the particle increases). Analysis of a series of polydisperse SOA samples showed similar dependencies: as the mass loading increased (and average volume-to-surface-area ratio increased), the average O / C ratio and OSc decreased, while the relative intensity of oligomer ions increased. The results illustrate the potential impact that particle phase chemistry can have on biogenic SOA formation and the particle size range where this chemistry becomes important.

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“…As such, certain reagent ions such as metal cations (e.g., Li + , Na + , and K + ) and NH + 4 , which are commonly used for detection of atmospheric organic compounds in offline techniques like electrospray ionization (ESI)-MS (Nizkorodov et al, 2011;Laskin et al, 2012;Witkowski and Gierczak, 2013), have remained largely unavailable for CIMS (Fujii et al, 2001). Compared to I − , NO − 3 , and acetate, which are generally more sensitive to more oxygenated organic compounds than to less oxygenated ones (Aljawhary et al, 2013;Lee et al, 2014;Hyttinen et al, 2015;Iyer et al, 2016;Berndt et al, 2016), these metal cations are expected to be able to sensitively detect both less oxygenated (e.g., compounds containing only carbonyl groups) and highly oxygenated multi-functional organic species (Gao et al, 2010;Nguyen et al, 2010;Nizkorodov et al, 2011;Laskin et al, 2012;Witkowski and Gierczak, 2013;Zhao et al, 2015Zhao et al, , 2016Tu et al, 2016;Zhang et al, 2017), and to form more strongly bound ion adducts. In addition, at present most CIMS techniques use a radioactive ion source such as 210 Po to produce the reagent ions, although more recently some utilize X-ray radiation, electrical discharge (Hirokawa et al, 2009;Yuan et al, 2016), or electron impact (Inomata and Hirokawa, 2017).…”

Section: Introductionmentioning

confidence: 99%

An electrospray chemical ionization source for real-time measurement of atmospheric organic and inorganic vapors

et al. 2017

Self Cite

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Abstract. We present an electrospray ion source coupled to an orthogonal continuous-flow atmospheric pressure chemical ionization region. The source can generate intense and stable currents of several specific reagent ions using a range of salt solutions prepared in methanol, thereby providing both an alternative to more common radioactive ion sources and allowing for the generation of reagent ions that are not available in current chemical ionization mass spectrometry (CIMS) techniques, such as alkaline cations. We couple the orthogonal electrospray chemical ionization (ESCI) source to a high-resolution time-of-flight mass spectrometer (HRToF-MS), and assess instrument performance through calibrations using nitric acid (HNO 3 ), formic acid (HCOOH), and isoprene epoxydiol (trans-β-IEPOX) gas standards, and through measurements of oxidized organic compounds formed from ozonolysis of α-pinene in a continuous-flow reaction chamber. When using iodide as the reagent ion, the HR-ToF-ESCIMS prototype has a sensitivity of 11, 2.4, and 10 cps pptv −1 per million counts per second (cps) of reagent ions and a detection limit (3σ , 5 s averaging) of 4.9, 12.5, and 1.4 pptv to HNO 3 , HCOOH, and IEPOX, respectively. These values are comparable to those obtained using an iodide-adduct HR-ToF-CIMS with a radioactive ion source and low-pressure ion-molecule reaction region. Applications to the α-pinene ozonolysis system demonstrates that HRToF-ESCIMS can generate multiple reagent ions (e.g., I − , NO − 3 , acetate, Li + , Na + , K + , and NH + 4 ) having different selectivity to provide a comprehensive molecular description of a complex organic system.

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Role of the reaction of stabilized Criegee intermediates with peroxy radicals in particle formation and growth in air

Abstract: We investigate the particle formation mechanism from ozonolysis, and find that it is highly dependent on the structure of the alkene.

Cited by 88 publications

References 100 publications

Identification of Organic Hydroperoxides and Peroxy Acids Using Atmospheric Pressure Chemical Ionization – Tandem Mass Spectrometry (APCI-MS/MS): Application to Secondary Organic Aerosol

Identification of Organic Hydroperoxides and Peroxy Acids Using Atmospheric Pressure Chemical Ionization – Tandem Mass Spectrometry (APCI-MS/MS): Application to Secondary Organic Aerosol

Particle size dependence of biogenic secondary organic aerosol molecular composition

An electrospray chemical ionization source for real-time measurement of atmospheric organic and inorganic vapors

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