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Gas-phase concentration of bovine serum albumin. (a) Preion/ion reaction electrospray ionization mass spectrum of bovine serum albumin. (b) Postion/ion reaction spectrum after 30 ms of ion/ion proton-transfer reactions with a perfluorocarbon anion (no ion parking). (c) Postion/ion reaction spectrum with acceleration of the [M+34H]34+ ion to effect ion parking. Adapted with permission from Reference 105. Copyright 2003, Elsevier Science.
