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Anal Bioanal Chem

Title:		Peak assignment in multi-capillary column-ion mobility spectrometry using comparative studies with gas chromatography-mass spectrometry for VOC analysis
Author(s):		Junger M; Bodeker B; Baumbach JI;
Address:		"Department of Metabolomics, ISAS - Institute for Analytical Sciences, Bunsen-Kirchhoff-Str. 11, 44139, Dortmund, Germany. melanie.juenger@isas.de"
Journal Title:		Anal Bioanal Chem
Year:		2010
Volume:		20091018
Issue:		1
Page Number:		471 - 482
DOI:		10.1007/s00216-009-3168-z
ISSN/ISBN:		1618-2650 (Electronic) 1618-2642 (Linking)
Abstract:		"Over the past years, ion mobility spectrometry (IMS) as a well established method within the fields of military and security has gained more and more interest for biological and medical applications. This highly sensitive and rapid separation technique was crucially enhanced by a multi-capillary column (MCC), pre-separation for complex samples. In order to unambiguously identify compounds in a complex sample, like breath, by IMS, a reference database is mandatory. To obtain a first set of reference data, 16 selected volatile organic substances were examined by MCC-IMS and comparatively analyzed by the standard technique for breath research, thermal desorption-gas chromatography-mass spectrometry. Experimentally determined MCC and GC retention times of these 16 compounds were aligned and their relation was expressed in a mathematical function. Using this function, a prognosis of the GC retention time can be given very precisely according to a recorded MCC retention time and vice versa. Thus, unknown MCC-IMS peaks from biological samples can be assigned-after alignment via the estimated GC retention time-to analytes identified by GC/MS from equivalent accomplished data. One example of applying the peak assignment strategy to a real breath sample is shown in detail"
Keywords:		Breath Tests *Gas Chromatography-Mass Spectrometry/instrumentation/methods Ions Volatile Organic Compounds/*chemistry;
Notes:		"MedlineJunger, Melanie Bodeker, Bertram Baumbach, Jorg Ingo eng Comparative Study Research Support, Non-U.S. Gov't Germany 2009/10/20 Anal Bioanal Chem. 2010 Jan; 396(1):471-82. doi: 10.1007/s00216-009-3168-z. Epub 2009 Oct 18"