Determination of the biogenic secondary organic aerosol fraction in the boreal forest by NMR spectroscopy

Finessi, E.; Decesari, Stefano; Paglione, Marco; Giulianelli, L.; Carbone, Claudio; Gilardoni, Stefania; Fuzzi, S.; Saarikoski, Sanna; Raatikainen, Tomi; Hillamo, Risto; Allan, J. D.; Mentel, Thomas F.; Tiitta, Petri; Laaksonen, A.; Petäj̈ä, Tuukka; Kulmala, Markku; Worsnop, Douglas R.; Facchini, M. C.

doi:10.5194/acp-12-941-2012

Cited by 59 publications

(57 citation statements)

References 78 publications

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“…6 along with f 91 values from previously published laboratory and field studies. Recent intercomparison of Aerodyne aerosol chemical speciation monitors (ACMS) highlighted a significant variability of mass fraction of specific m/z to total organic between instruments (Fröhlich et al, 2015), and hence the comparisons of f 91 values between studies are only semiquantitative. Nevertheless, Chen et al (2015) reported that the f 91 value of α-pinene SOA generated in smog chamber experiments at low NO x conditions is much lower than β-caryophyllene SOA generated in the same study.…”

Section: Comparison To Previous Laboratory Studiesmentioning

confidence: 99%

Substantial secondary organic aerosol formation in a coniferous forest: observations of both day- and nighttime chemistry

et al. 2016

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Abstract. Substantial biogenic secondary organic aerosol (BSOA) formation was investigated in a coniferous forest mountain region in Whistler, British Columbia. A largely biogenic aerosol growth episode was observed, providing a unique opportunity to investigate BSOA formation chemistry in a forested environment with limited influence from anthropogenic emissions. Positive matrix factorization of aerosol mass spectrometry (AMS) measurement identified two types of BSOA (BSOA-1 and BSOA-2), which were primarily generated by gas-phase oxidation of monoterpenes and perhaps sesquiterpenes. The temporal variations of BSOA-1 and BSOA-2 can be explained by gas-particle partitioning in response to ambient temperature and the relative importance of different oxidation mechanisms between day and night. While BSOA-1 arises from gas-phase ozonolysis and nitrate radical chemistry at night, BSOA-2 is likely less volatile than BSOA-1 and consists of products formed via gas-phase oxidation by OH radical and ozone during the day. Organic nitrates produced through nitrate radical chemistry can account for 22-33 % of BSOA-1 mass at night. The mass spectra of BSOA-1 and BSOA-2 have higher values of the mass fraction of m/z 91 (f 91 ) compared to the background organic aerosol. Using f 91 to evaluate BSOA formation pathways in this unpolluted, forested region, heterogeneous oxidation of BSOA-1 is a minor production pathway of BSOA-2.

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Section: Comparison To Previous Laboratory Studiesmentioning

confidence: 99%

Substantial secondary organic aerosol formation in a coniferous forest: observations of both day- and nighttime chemistry

et al. 2016

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“…This technique was originally developed for water-soluble OM and is therefore unsuitable for targeting sources producing organic compounds with a low O / C ratio (as for fossil fuel POA). Recently, factor analysis techniques have been implemented for spectral deconvolution of NMR data sets (Finessi et al, 2012;Paglione et al, 2014), providing an additional tool for organic source apportionment, particularly useful for the determination of the biomass burning and biogenic SOA contributions. Analogously to FTIR, also the NMR-based source apportionment approaches require postanalysis interpretation.…”

Section: Other Ensemble-based Receptor Techniquesmentioning

confidence: 99%

Particulate matter, air quality and climate: lessons learned and future needs

et al. 2015

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Abstract. The literature on atmospheric particulate matter (PM), or atmospheric aerosol, has increased enormously over the last 2 decades and amounts now to some 1500-2000 papers per year in the refereed literature. This is in part due to the enormous advances in measurement technologies, which have allowed for an increasingly accurate understanding of the chemical composition and of the physical properties of atmospheric particles and of their processes in the atmosphere. The growing scientific interest in atmospheric aerosol particles is due to their high importance for environmental policy. In fact, particulate matter constitutes one of the most challenging problems both for air quality and for climate change policies. In this context, this paper reviews the most recent results within the atmospheric aerosol sciences and the policy needs, which have driven much of the increase in monitoring and mechanistic research over the last 2 decades.The synthesis reveals many new processes and developments in the science underpinning climate-aerosol interactions and effects of PM on human health and the environment. However, while airborne particulate matter is responsible for globally important influences on premature human mortality, we still do not know the relative importance of the different chemical components of PM for these effects. Likewise, the magnitude of the overall effects of PM on climate remains highly uncertain. Despite the uncertainty there are many things that could be done to mitigate local and global problems of atmospheric PM. Recent analyses have shown that reducing black carbon (BC) emissions, using known control measures, would reduce global warming and delay the time when anthropogenic effects on global temperature would exceed 2 • C. Likewise, cost-effective control measures on ammonia, an important agricultural precursor gas for secondary inorganic aerosols (SIA), would reduce regional eutrophication and PM concentrations in large areas of Europe, China and the USA. Thus, there is much that could be done to reduce the effects of atmospheric PM on the climate and the health of the environment and the human population.A prioritized list of actions to mitigate the full range of effects of PM is currently undeliverable due to shortcomings in the knowledge of aerosol science; among the shortcomings, the roles of PM in global climate and the relative roles of Published by Copernicus Publications on behalf of the European Geosciences Union. 8218S. Fuzzi et al.: Particulate matter, air quality and climate different PM precursor sources and their response to climate and land use change over the remaining decades of this century are prominent. In any case, the evidence from this paper strongly advocates for an integrated approach to air quality and climate policies.

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“…13C NMR spectroscopy is a more suitable tool than 1H NMR for investigating the distribution of C functional groups in aerosols, for it can demonstrate carbon skeletons of rings and chains directly. A number of recent studies have employed NMR methods to analyze aerosols and their specific compounds, such as biogenic secondary organic aerosol [4], wood burning aerosols [5] [6], and HUmic Like Substances (HULIS) [7].…”

Section: Introductionmentioning

confidence: 99%

Applications of Infrared Spectroscopy in Analysis of Organic Aerosols

Cao¹,

Yan²,

Zou³

et al. 2018

SAR

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This paper reviews the studies of using FTIR to investigate the components of aerosols produced in smog chamber experiments and collected in atmosphere. The fact that aerosols are mixture of small amount of countless individual compounds makes the analysis of aerosol constituents very challenging. Although a number of advanced instruments have been applied to the chemical characterization of aerosol components, the majority of aerosol components, particularly the organics, remain unknown. Being supplemental to the traditional quantitative instruments, FTIR has been recently used either individually or combining with other analytical instruments to characterize the components of aerosol particles. This paper aims to show how FTIR is applied to analysis of organic aerosols in current literature and to summarize the FTIR characteristic peak frequencies that are widely seen in the FTIR measurement of organic aerosols. It will be greatly helpful to researchers whose studies are focused on the analysis of aerosol components.

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Determination of the biogenic secondary organic aerosol fraction in the boreal forest by NMR spectroscopy

Cited by 59 publications

References 78 publications

Substantial secondary organic aerosol formation in a coniferous forest: observations of both day- and nighttime chemistry

Substantial secondary organic aerosol formation in a coniferous forest: observations of both day- and nighttime chemistry

Particulate matter, air quality and climate: lessons learned and future needs

Applications of Infrared Spectroscopy in Analysis of Organic Aerosols

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