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Title (Primary) Time-of-flight ion mobility spectrometry and differential mobility spectrometry: a comparative study of their efficiency in the analysis of halogenated compounds
Author Borsdorf, H.; Nazarov, E.G.; Miller, R.A.
Journal Talanta
Year 2007
Department ANA; MET
Volume 71
Issue 4
Page From 1804
Page To 1812
Language englisch
Keywords ion mobility spectrometry; differential mobility spectrometry; isomeric compounds
Abstract The ion mobilities of halogenated aromatics which are of interest in environmental chemistry and process monitoring were characterized with field-deployable ion mobility spectrometers and differential mobility spectrometers. The dependence of mobility of gas-phase ions formed by atmospheric-pressure photoionization (APPI) on the electric field was determined for a number of structural isomers. The structure of the product ions formed was identified by investigations using the coupling of ion mobility spectrometry with mass spectrometry (APPI-IMS-MS) and APPI-MS. In contrast to conventional time-of-flight ion mobility spectrometry (IMS) with constant linear voltage gradients in drift tubes, differential mobility spectrometry (DMS) employs the field dependence of ion mobility. Depending on the position of substituents, differences in field dependence were established for the isomeric compounds in contrast to conventional IMS in which comparable reduced mobility values were detected for the isomers investigated. These findings permit the differentiation between most of the investigated isomeric aromatics with a different constitution using DMS.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=1669
Borsdorf, H., Nazarov, E.G., Miller, R.A. (2007):
Time-of-flight ion mobility spectrometry and differential mobility spectrometry: a comparative study of their efficiency in the analysis of halogenated compounds
Talanta 71 (4), 1804 - 1812