Determination of the non-constant component of the ion mobility using the spectrometer of ion mobility increment

Eur. J. Mass Spectrom. 12, 143–151 (2006)
DOI: 10.1255/ejms.805

Determination of the non-constant component of the ion mobility using the spectrometer of ion mobility increment

A.A. Elistratov^a, S.V. Shibkov^a and E.N. Nikolaev^b
^aThe Institute for Cryptosystems, Communication and Informatics, Moscow
^bThe Institute for Energy Problems of Chemical Physics Russian Academy of Science, Moscow

ABSTRACT:

A new method for determination of the non-constant component, α(E), of an ion mobility, k(E), is suggested. The method uses the relationship U_C (U_S ) that can be experimentally obtained with a spectrometer of ion mobility increment with planar drift chamber. (U_C is a compensating voltage, U_S is separating voltage amplitude.) A general equation for α(E) has been derived. We have explored the possibility of determination of α(E) from the experimental data for different types of U_S (t). In two specific cases, analytical solutions have been obtained.

Keywords: determination of ion mobility, theory, FAIMS, differential mobility spectrometry

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