Matrix assisted laser desorption/ionization (MALDI) has been used extensively to generate ions for the analysis of polymers in many mass spectromters including the Fourier transform mass spectrometer, and a variety of techniques exist for getting these ions into the trapped ion cell.


O'Connor, P.B, Heeren, R.M.A, Duursma, M.C, van Rooij, G.J, van der Hage, E.R.E, & Boon, J.J. (1996). Analysis of polymers using FTMS. In Proceedings of the 44th ASMS Conference on Mass Spectrometry and Allied Topics, May 12-16, 1996, Portland, Oregon. ASMS.