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Overtone mobility spectrometry: part 3. On the origin of peaks.

ABSTRACT: The origin of non-integer overtone peaks in overtone mobility spectrometry (OMS) spectra is investigated by ion trajectory simulations. Simulations indicate that these OMS features arise from higher-order overtone series. An empirically-derived formula is presented as a means of describing the positions of peaks. The new equation makes it possible to determine collision cross sections from any OMS peak. Additionally, it is extended as a means of predicting the resolving power for any peak in an OMS distribution.

SUBMITTER: Valentine SJ

PROVIDER: S-EPMC3253535 | biostudies-literature | 2011 May

REPOSITORIES: biostudies-literature

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Overtone mobility spectrometry: part 3. On the origin of peaks.

Valentine Stephen J SJ Kurulugama Ruwan T RT Clemmer David E DE

Journal of the American Society for Mass Spectrometry 20110304 5

The origin of non-integer overtone peaks in overtone mobility spectrometry (OMS) spectra is investigated by ion trajectory simulations. Simulations indicate that these OMS features arise from higher-order overtone series. An empirically-derived formula is presented as a means of describing the positions of peaks. The new equation makes it possible to determine collision cross sections from any OMS peak. Additionally, it is extended as a means of predicting the resolving power for any peak in an ...[more]

PMID: 21472515

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