Adjusting mobility scales of ion mobility spectrometers using 2,6-DtBP as a reference compound.
Talanta
; 76(5): 1218-23, 2008 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-18761181
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.
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MEDLINE
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En
Revista:
Talanta
Año:
2008
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Article
País de afiliación:
Finlandia