Journal
TALANTA
Volume 76, Issue 5, Pages 1218-1223Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2008.05.030
Keywords
IMS; time-of-flight; 2.6-DtBP; reference compound; instrument comparison
Categories
Funding
- Finnish Funding Agency for Technology and Innovation (Tekes)
- Environics Ltd.
- Orion Pharma
- Paavo Ristola Consulting Engineers Ltd
- National Bureau of Investigation (Finland)
- HERC project Urban and rural air pollution-response of ecosystem and society (URPO)
- Finnish Defense Forces and industrial Research Fund at Tampere University of Technology
- Academy of Finland [109124]
- Academy of Finland (AKA) [109124, 109124] Funding Source: Academy of Finland (AKA)
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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-DtBR 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. (C) 2008 Elsevier B.V. All rights reserved.
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