title: Letter: A simple ion source set-up for desorption/ionization on silicon with ion mobility spectrometry and ion mobility spectrometry-mass spectrometry.
abstract: Using a simple ion source set-up, laser desorption/ionization on silicon (DIOS) was demonstrated with the use of a custom-made drift tube ion mobility spectrometer (IMS), mounted on a commercial triple quadrupole mass spectrometer, and with an IMS equipped with a Faraday plate detector. DIOS was tested by mobility measurement of tetrapropylammonium iodide, tetrabutylammonium iodide and tetrapentylammonium iodide, whilst 2,6-di-tert- butylpyridine was used as a standard. The reduced mobilities measured for the test halides are in concordance with previously obtained ion mobility spectrometry-mass spectrometry data.
authors.affiliation: Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, PO Box 55, FI-00014, Helsinki Finland. alexey.adamov@helsinki.fi
authors.forename: Alexey
authors.initials: A
authors.lastname: Adamov
authors.forename: Alexey A
authors.initials: AA
authors.lastname: Sysoev
authors.forename: Kestutis
authors.initials: K
authors.lastname: Grigoras
authors.forename: Jaako
authors.initials: J
authors.lastname: Laakia
authors.forename: Tapio
authors.initials: T
authors.lastname: Kotiaho