Journal ArticleDOI
On-line monitoring of volatile organic compounds at pptv levels by means of proton-transfer-reaction mass spectrometry (PTR-MS) medical applications, food control and environmental research
TLDR
In this paper, a proton transfer reaction mass spectrometer (PTR-MS) was developed which allows for on-line measurements of trace components with concentrations as low as a few pptv.About:
This article is published in International Journal of Mass Spectrometry and Ion Processes.The article was published on 1998-02-01. It has received 1542 citations till now. The article focuses on the topics: Proton-transfer-reaction mass spectrometry & Breath gas analysis.read more
Citations
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Journal ArticleDOI
Compilation of Henry's law constants (version 4.0) for water as solvent
TL;DR: According to Henry's law, the equilibrium ratio between the abundances in the gas phase and in the aqueous phase is constant for a dilute solution as discussed by the authors, and a compilation of 17 350 values of Henry's Law constants for 4632 species, collected from 689 references is available at http://wwwhenrys-law.org
Journal ArticleDOI
A large source of low-volatility secondary organic aerosol
Mikael Ehn,Joel A. Thornton,Einhard Kleist,Mikko Sipilä,Heikki Junninen,Iida Pullinen,Monika Springer,Florian Rubach,Ralf Tillmann,Ben H. Lee,Felipe D. Lopez-Hilfiker,S. Andres,Ismail-Hakki Acir,Matti P. Rissanen,Tuija Jokinen,Siegfried Schobesberger,Juha Kangasluoma,Jenni Kontkanen,Tuomo Nieminen,Theo Kurtén,Lasse B. Nielsen,Solvejg Jørgensen,Henrik G. Kjaergaard,Manjula R. Canagaratna,Miikka Dal Maso,Torsten Berndt,Tuukka Petäjä,Andreas Wahner,Veli-Matti Kerminen,Markku Kulmala,Douglas R. Worsnop,Juergen Wildt,Thomas F. Mentel +32 more
TL;DR: It is found that a direct pathway leads from several biogenic VOCs, such as monoterpenes, to the formation of large amounts of extremely low-volatility vapours, helping to explain the discrepancy between the observed atmospheric burden of secondary organic aerosol and that reported by many model studies.
Journal ArticleDOI
Measurements of volatile organic compounds in the earth's atmosphere using proton-transfer-reaction mass spectrometry.
TL;DR: The theory of operation is described and the response of the instrument to be described for different operating conditions is described, including the results obtained in fresh and aged forest-fire and urban plumes.
Journal ArticleDOI
Formation of Urban Fine Particulate Matter
Renyi Zhang,Gehui Wang,Song Guo,Misti L. Zamora,Qi Ying,Yun Lin,Weigang Wang,Min Hu,Yuan Wang +8 more
TL;DR: Air pollutants consist of a complex combination of gases and particulate matter, which is emitted directly into the atmosphere or formed in the atmosphere through gas-to-particle conversion (secondary) (Figure 1).
Journal ArticleDOI
The Indian Ocean Experiment: Widespread Air Pollution from South and Southeast Asia
Jos Lelieveld,Paul J. Crutzen,Veerabhadran Ramanathan,Meinrat O. Andreae,Carl A. M. Brenninkmeijer,Teresa Campos,Glen R. Cass,Russell R. Dickerson,Horst Fischer,J. A. de Gouw,Armin Hansel,Anne Jefferson,Dieter Kley,A. T. J. de Laat,Shiv Lal,Mark Lawrence,Jürgen M. Lobert,Olga L. Mayol-Bracero,Abhijit Mitra,T. Novakov,Samuel J. Oltmans,Kimberly A. Prather,Thomas Reiner,Henning Rodhe,H. A. Scheeren,D. Sikka,Jonathan Williams +26 more
TL;DR: It is shown that agricultural burning and especially biofuel use enhance carbon monoxide concentrations and Fossil fuel combustion and biomass burning cause a high aerosol loading, which gives rise to extensive air quality degradation.
References
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Parametrization of the ion–polar molecule collision rate constant by trajectory calculations
Timothy Su,Walter J. Chesnavich +1 more
TL;DR: In this paper, a recently reported calculation by chesnavich, Su and Bowers on classical trajectory study of thermal energy ion-polar molecule capture collisions is further extended.
Journal ArticleDOI
Nonalcoholic steatohepatitis: An expanded clinical entity
TL;DR: Nonalcoholic steatohepatitis can be a severe, progressive liver disease leading to the development of cirrhosis and should no longer be considered a disease predominantly seen in obese women with diabetes.
Related Papers (5)
Proton-transfer-reaction mass spectrometry (PTR–MS): on-line monitoring of volatile organic compounds at pptv levels
Werner Lindinger,Alfons Jordan +1 more