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Electrospray droplet impact/secondary ion mass spectrometry (EDI/SIMS) using NaF and AgF as cationization matrices
Author(s) -
Takaishi R.,
Hiraoka K.,
Wada H.,
Morita S.,
Nakashima T.,
ami H.
Publication year - 2015
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5782
Subject(s) - chemistry , reagent , mass spectrometry , electrospray , matrix (chemical analysis) , secondary ion mass spectrometry , ion , polystyrene , electrospray ionization , polyethylene glycol , nuclear chemistry , analytical chemistry (journal) , organic chemistry , chromatography , polymer
In our previous paper, it was suggested that metal fluorides may be useful as cationization matrices in Electrospray droplet impact/SIMS. In this work, NaF and AgF were used as the cationization matrices for cyclodextrin (CD), polyethylene glycol (PEG), polystyrene (PS), garlic juice, and sliced raw rice. EDI mass spectra were measured without and with the use of matrices. Enhancement of ion abundances of [M + Na] + for CD and PEG with NaF matrix and that of [M + Ag] + for PS with AgF matrix were observed. However, the addition of matrices was not effective for the cationization of garlic juice and sliced raw rice samples. This may be due to the Coulombic repulsion of the reagent ions of Na + or Ag + with the preformed K + adducts of oligosaccharides already present in the samples. Copyright © 2015 John Wiley & Sons, Ltd.