title: Adjusting mobility scales of ion mobility spectrometers using 2,6-DtBP as a reference compound.
abstract: Performance of several time-of-flight (TOF) type ion mobility spectrometers (IMS) was compared in a joint measurement campaign and their mobility scales were adjusted based on the measurements. A standard reference compound 2,6-di-tert butylpyridine (2,6-DtBP) was used to create a single peak ion mobility distribution with a known mobility value. The effective length of the drift tube of each device, considered here as an instrument constant, was determined based on the measurements. Sequentially, two multi-peaked test compounds, DMMP and DIMP, were used to verify the performance of the adjustment procedure in a wider mobility scale. By determining the effective drift tube lengths using 2,6-DtBP, agreement between the devices was achieved. The determination of effective drift tube lengths according to standard reference compound was found to be a good method for instrument inter-comparison. The comparison procedure, its benefits and shortcomings as well as dependency on accuracy of literature value are discussed along with the results.
authors.affiliation: Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P.O. Box 692, FI-33101 Tampere, Finland.
authors.forename: A-K
authors.initials: AK
authors.lastname: Viitanen
authors.forename: T
authors.initials: T
authors.lastname: Mauriala
authors.forename: T
authors.initials: T
authors.lastname: Mattila
authors.forename: A
authors.initials: A
authors.lastname: Adamov
authors.forename: C S
authors.initials: CS
authors.lastname: Pedersen
authors.forename: J M
authors.initials: JM
authors.lastname: Mäkelä
authors.forename: M
authors.initials: M
authors.lastname: Marjamäki
authors.forename: A
authors.initials: A
authors.lastname: Sysoev
authors.forename: J
authors.initials: J
authors.lastname: Keskinen
authors.forename: T
authors.initials: T
authors.lastname: Kotiaho