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J Am Soc Mass Spectrom

Title:		High resolution PTR-TOF: quantification and formula confirmation of VOC in real time
Author(s):		Graus M; Muller M; Hansel A;
Address:		"University of Innsbruck, Institute of Ion Physics and Applied Physics, Innsbruck, Austria"
Journal Title:		J Am Soc Mass Spectrom
Year:		2010
Volume:		20100210
Issue:		6
Page Number:		1037 - 1044
DOI:		10.1016/j.jasms.2010.02.006
ISSN/ISBN:		1879-1123 (Electronic) 1044-0305 (Linking)
Abstract:		"We present the unprecedented capability to identify and quantify volatile organic compounds (VOCs) by means of proton transfer reaction time-of-flight (PTR-TOF) mass spectrometry on-line with high time resolution. A mass resolving power of 4000-5000 and a mass accuracy of 2.5 ppm allow for the unambiguous sum-formula identification of hydrocarbons (HCs) and oxygenated VOCs (OVOCs). Test masses measured over an 11-wk period are very precise (SD < 3.4 ppm) and the mass resolving power shows good stability (SD < 5%). Based on a 1 min time resolution, we demonstrate a detection limit in the low pptv range featuring a dynamic range of six orders of magnitude. Sub-ppbv VOC concentrations are analyzed within a second; sub-pptv detection limits are achieved within a few tens of minutes. We present a thorough characterization of our recently developed PTR-TOF system and address application fields for the new instrument"
Keywords:
Notes:		"PubMed-not-MEDLINEGraus, Martin Muller, Markus Hansel, Armin eng 2010/03/26 J Am Soc Mass Spectrom. 2010 Jun; 21(6):1037-44. doi: 10.1016/j.jasms.2010.02.006. Epub 2010 Feb 10"