Journal ArticleDOI
Molecular characterization of biomass burning aerosols using high-resolution mass spectrometry.
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The results indicate that a significant number of high-MW organic compounds in BBA samples are highly oxidized polar species that can be efficiently detected using ESI/MS but are difficult to observe using conventional gas-chromatography/mass spectrometry analysis of aerosol samples.Abstract:
Chemical characterization of atmospheric aerosols presents a serious analytical challenge because of the complexity of particulate matter analyte composed of a large number of compounds with a wide range of molecular structures, physico-chemical properties, and reactivity. In this study the chemical composition of the organic constituents of biomass burning aerosol (BBA) samples is characterized by high-resolution electrospray ionization mass spectrometry (ESI/MS). Accurate mass measurement combined with Kendrick analysis allows assignment of the elemental composition for hundreds of compounds in the range of m/z values of 50−1000. ESI/MS spectra of different BBA samples contain a variety of distinct, sample specific, characteristic peaks that can be used as unique markers for different types of biofuels. Our results indicate that a significant number of high-MW organic compounds in BBA samples are highly oxidized polar species that can be efficiently detected using ESI/MS but are difficult to observe usi...read more
Citations
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Journal ArticleDOI
A high-resolution mass spectrometer to measure atmospheric ion composition
Heikki Junninen,Mikael Ehn,Tuukka Petäjä,Laura Luosujärvi,Tapio Kotiaho,Risto Kostiainen,U. Rohner,Marc Gonin,K. Fuhrer,Markku Kulmala,D. R. Worsnop +10 more
TL;DR: In this paper, an Atmospheric Pressure Interface Time-of-Flight Mass Spectrometer (APi-TOF, Tofwerk AG) was used to detect the composition of ambient ions in the mass/charge range up to 2000 Th.
Journal ArticleDOI
The molecular identification of organic compounds in the atmosphere : state of the art and challenges
Barbara Nozière,Markus Kalberer,Magda Claeys,James Allan,Barbara D'Anna,Stefano Decesari,E. Finessi,Marianne Glasius,Irena Grgić,Jacqueline F. Hamilton,Thorsten Hoffmann,Yoshiteru Iinuma,Mohammed Jaoui,Ariane Kahnt,Christopher J. Kampf,Ivan Kourtchev,Willy Maenhaut,Willy Maenhaut,Nicholas Marsden,Sanna Saarikoski,Jürgen Schnelle-Kreis,Jason D. Surratt,Sönke Szidat,Rafal Szmigielski,Armin Wisthaler +24 more
TL;DR: Atmosphere: State of the Art and Challenges Barbara Nozier̀e,*,† Markus Kalberer,*,‡ Magda Claeys,* James Allan, Barbara D’Anna,† Stefano Decesari, Emanuela Finessi, Marianne Glasius, Irena Grgic,́ Jacqueline F.
Journal ArticleDOI
Health effects of residential wood smoke particles: the importance of combustion conditions and physicochemical particle properties
Anette Kocbach Bølling,Joakim Pagels,Karl Espen Yttri,Lars Barregard,Gerd Sallsten,Per E. Schwarze,Christoffer Boman +6 more
TL;DR: Overall, the reviewed literature regarding the physicochemical properties of wood smoke particles provides a relatively clear picture of how these properties vary with the combustion conditions, whereas particle emissions from specific classes of combustion appliances are less well characterised.
Journal ArticleDOI
Mass spectrometry of atmospheric aerosols--recent developments and applications. Part II: On-line mass spectrometry techniques.
TL;DR: Real-time mass spectrometry has been shown recently to provide the ability to probe the chemical composition of ambient individual particles <30 nm in diameter to further the understanding of how particles are formed through nucleation in the atmosphere.
Journal ArticleDOI
Using elemental ratios to predict the density of organic material composed of carbon, hydrogen, and oxygen.
TL;DR: A governing equation was developed to predict the density ρ(org) of organic material composed of carbon, oxygen, and hydrogen using the elemental ratios O:C and H:C as input parameters and has an accuracy of 12% for more than 90% of the 31 atmospherically relevant compounds used in the training set.
References
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