The Molecular Identification of Organic Compounds in the Atmosphere: State of the Art and Challenges

Nozière, Barbara; Kalberer, Markus; Claeys, Magda; Allan, J. D.; D’Anna, Barbara; Decesari, Stefano; Finessi, E.; Glasius, Marianne; Grgić, Irena; Hamilton, Jacqueline F.; Hoffmann, Thorsten; Iinuma, Yoshiteru; Jaoui, Mohammed; Kahnt, Ariane; Kampf, Christopher J.; Kourtchev, Ivan; Maenhaut, Willy; Marsden, Nicholas; Saarikoski, Sanna; Schnelle-Kreis, Jürgen; Surratt, Jason D.; Szidat, Sönke; Szmigielski, Rafał; Wisthaler, Armin

doi:10.1021/cr5003485

Cited by 462 publications

(462 citation statements)

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“…This calls for improved analysis methods for the molecular characterisation of the organic aerosol. As indicated in recent review papers [29,48], important challenges remain in the analysis of aerosols for organic compounds. In recent years, extremely low volatile compounds (ELVOCs) [49], which are currently referred to as highly oxygenated molecules (HOMs) [50], have been observed in biogenic organic aerosols from both the field and chamber experiments, and one may wonder to what extent they contribute to the PM 2.5 OC.…”

Section: Discussionmentioning

confidence: 99%

“…Whereas it was very hot and dry during the entire 2003 campaign, the 2006 campaign was characterised by two distinct periods, with the first half of the campaign (24 May-11 June) unusually cold and the second half (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29) warm. The average temperatures and associated standard deviations during the cold period were 16.9 ± 2.6 • C and 11.3 ± 2.4 • C during the daytime and night-time samplings, respectively, and during the warm period 27.4 ± 3.1 • C and 18.5 ± 3.5 • C, respectively.…”

Section: Concentrations Time Series and Correlationsmentioning

confidence: 99%

“…Tables 2 and 3 present median concentrations (and interquartile ranges) for the particulate compounds in the daytime and night-time PM 2.5 samples of the cold and warm periods. The 15 organic acids, measured by LC/MS, are all believed to predominantly originate from the oxidation of α-pinene and other monoterpenes [29], whereas the five isomeric α-pinene-related pinanediol mono-nitrate OSs can be formed by photooxidation in the presence of NO x as well as by NO 3 radical-initiated oxidation, which is a specific night-time oxidation process [30]. For EC, which is a primary aerosol component that originates from the incomplete combustion of fossil fuels and biomass [31], there is little difference between daytime and night-time and between the cold and warm periods.…”

Section: Concentrations Time Series and Correlationsmentioning

confidence: 99%

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Contribution from Selected Organic Species to PM2.5 Aerosol during a Summer Field Campaign at K-Puszta, Hungary

et al. 2017

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A summer field campaign was conducted at the forested background site of K-puszta in Hungary. The main aim was to assess the contribution of terpene-derived particulate organic compounds to the PM 2.5 organic carbon (OC) and of the secondary organic carbon (SOC) from α-pinene to the OC. The study lasted from 24 May to 29 June 2006; the first half the weather was cold, while the second half was warm. Separate daytime and night-time PM 2.5 samples were collected with a high-volume sampler and the samples were analysed by several analytical techniques, including ion chromatography (IC) and liquid chromatography-mass spectrometry (LC/MS). The latter technique was used for measuring the terpene-derived species. Ancillary high time resolution measurements of volatile organic compounds (VOCs) were made with proton-transfer reaction-mass spectrometry. The temporal and diurnal variability of the particulate compounds and VOCs and interrelationships were examined. It was found that the monoterpenes and a number of terpene-derived particulate compounds, such as cis-pinic and cis-caric acid, exhibited a strong day/night difference during the warm period, with about 10 times higher levels during the night-time. During the warm period, the IC compounds and LC/MS compounds accounted, on average, for 3.1% and 2.0%, respectively, of the OC, whereas the contribution of SOC from α-pinene to the OC was estimated at a minimum of 7.1%.

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Section: Discussionmentioning

confidence: 99%

Section: Concentrations Time Series and Correlationsmentioning

confidence: 99%

Section: Concentrations Time Series and Correlationsmentioning

confidence: 99%

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Contribution from Selected Organic Species to PM2.5 Aerosol during a Summer Field Campaign at K-Puszta, Hungary

et al. 2017

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“…Likewise, there exist a number of well‐studied complex mixtures, including natural organic matter (NOM), i.e. dissolved organic matter,5, 10, 11 soil organic matter,12 and organic aerosols,13, 14, 15 petroleum,16, 17 or beverages such as wine18 or Scotch whisky 19, 20. Amongst the most complex of these, a component of NOM and the closest sample to a universal standard, is Suwannee River Fulvic Acid (SRFA) produced by the International Humic Substance Society 21.…”

Section: Figurementioning

confidence: 99%

Interactive van Krevelen diagrams – Advanced visualisation of mass spectrometry data of complex mixtures

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“…Characterizing the identity and abundance of many of these species in the atmosphere is essential for understanding their atmospheric processes and subsequent environmental and climate impacts. As a result, there is a critical interest in the development and application of the state-of-art analytical instruments for the analysis of atmospheric composition (Noziere et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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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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The Molecular Identification of Organic Compounds in the Atmosphere: State of the Art and Challenges

Abstract: SSCI-VIDE+ATARI:CARE+BNO:BDAInternational audienc

Cited by 462 publications

References 819 publications

Contribution from Selected Organic Species to PM2.5 Aerosol during a Summer Field Campaign at K-Puszta, Hungary

Contribution from Selected Organic Species to PM2.5 Aerosol during a Summer Field Campaign at K-Puszta, Hungary

Interactive van Krevelen diagrams – Advanced visualisation of mass spectrometry data of complex mixtures

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

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