To reduce the influence of ion transfer discrimination of the FT-ICR analysis, a strategy is proposed in this paper to obtain the full mass spectrum by stitching together the individual broadband mass segments, which are acquired under different time-of-flights and other fixed ion transfer operational parameters. The time-of-flight effect of ion transfer optics on mass distribution is investigated. TOF is found as the main factor which caused time-of-flight effect. The broadband mass spectrum stitching of crude oil using negative-ion ESI FT-ICR MS is presented. The mass range of stitched mass spectrum is extended to as high as m/z 1300. The O2 class species have 1-22 DBE and 10-100 carbon atoms among which peaks of 1-4 DBE and 15-60 carbon atoms are abundant.

Broadband mass spectrum stitching of crude oil obtained by ultrahigh resolution mass spectrometry

244th National Meeting (2012)

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