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A Study of Cation Attachment to Polystyrene by Means of Matrix‐assisted Laser Desorption/Ionization and Electrospray Ionization‐Mass Spectrometry
Author(s) -
Deery Michael J.,
Jennings Keith R.,
Jasieczek Christina B.,
Haddleton David M.,
Jackson Anthony T.,
Yates Hilary T.,
Scrivens James H.
Publication year - 1997
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19970115)11:1<57::aid-rcm772>3.0.co;2-g
Subject(s) - chemistry , electrospray ionization , mass spectrometry , adduct , mass spectrum , analytical chemistry (journal) , polystyrene , matrix assisted laser desorption/ionization , electrospray , ionization , sample preparation in mass spectrometry , desorption , ion , polymer , chromatography , organic chemistry , adsorption
A range of metal cations has been shown, by means of matrix assisted laser desorption/ionization (MALDI) and electrospray ionization (ESI) mass spectrometry, to form adduct complexes with polystyrene. Both MALDI and ESI mass spectra contain adduct ion peaks corresponding to [PS + Cat] + , where PS represents a polystyrene molecule and Cat a cationic species. In addition, salt cluster complexes assigned as [PS + M(MX) n ] + , where MX represents the metal salt, M the metal cation and n = 1 or 2, are observed in ESI spectra. The most favourable interaction between cation and polymer, for MALDI experiments involving dithranol as the matrix, occurs when either silver or copper ions are the dopant cations, whereas the addition of potassium salts leads to the most intense and reproducible ESI spectra. It has been established that there are several problems associated with the analysis of synthetic polymers in an ESI‐quadruple instrument which are not found in the corresponding MALDI‐TOF experiments. © 1997 John Wiley & Sons, Ltd.