Literature DB >> 10717652

Matrix effects on selectivities of poly(ethylene glycol)s for alkali metal ion complexation in matrix-assisted laser desorption/ionization.

H Rashidzadeh1, Y Wang, B Guo.   

Abstract

The effect of the matrix on poly(ethylene glycol) (PEG) cationization was investigated using an equimolar mixture of CsCl and LiCl as cationizing agents. It was observed that for both carboxylic acid and non-carboxylic acid matrices used, PEG cationization by a given alkali metal ion depends on the matrix used. For example, cesiated PEG ion intensities were much stronger than those of the corresponding lithiated PEG ions when equimolar concentrations of Cs(+) and Li(+) were present and IAA (indolacrylic acid) was the matrix. However, an opposite result was obtained when the same experimental conditions were utilized, but with HABA (2-(4-hydroxyphenylazo)benzoic acid) in place of IAA as the matrix. Copyright 2000 John Wiley & Sons, Ltd.

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Year:  2000        PMID： 10717652     DOI： 10.1002/(SICI)1097-0231(20000331)14:6<439::AID-RCM887>3.0.CO;2-5

Source DB:  PubMed          Journal:  Rapid Commun Mass Spectrom        ISSN： 0951-4198            Impact factor:   2.419


  7 in total

1.  Application of an integrated matrix-assisted laser desorption/ionization time-of-flight, electrospray ionization mass spectrometry and tandem mass spectrometry approach to characterizing complex polyol mixtures.

Authors:  R Chen; A M Tseng; M Uhing; L Li
Journal:  J Am Soc Mass Spectrom       Date:  2001-01       Impact factor: 3.109

2.  Sodium cation affinities of commonly used MALDI matrices determined by guided ion beam tandem mass spectrometry.

Authors:  S D M Chinthaka; M T Rodgers
Journal:  J Am Soc Mass Spectrom       Date:  2012-04       Impact factor: 3.109

3.  Investigating the effect of mixing ratio on molar mass distributions of synthetic polymers determined by MALDI-TOF mass spectrometry using design of experiments.

Authors:  Heike Brandt; Thomas Ehmann; Matthias Otto
Journal:  J Am Soc Mass Spectrom       Date:  2010-08-03       Impact factor: 3.109

4.  Residue mass plot and abundance plot: detection of isobaric interferences in DE-MALDI-TOF-mass spectra of complex polymer mixtures.

Authors:  T Meyer; M Kunkel; A W Frahm; D Waidelich
Journal:  J Am Soc Mass Spectrom       Date:  2001-08       Impact factor: 3.109

5.  Structural effects on polyether cationization by alkali metal ions in matrix-assisted laser desorption/ionization

Authors: 
Journal:  J Am Soc Mass Spectrom       Date:  2000-07       Impact factor: 3.109

6.  Characterization of poly(ethylene glycol) esters using low energy collision-induced dissociation in electrospray ionization mass spectrometry.

Authors:  Rui Chen; Xinlei Yu; Liang Li
Journal:  J Am Soc Mass Spectrom       Date:  2002-07       Impact factor: 3.109

7.  Atmospheric pressure photoionization mass spectrometry of polyisobutylene derivatives.

Authors:  Sándor Kéki; János Török; Lajos Nagy; Miklós Zsuga
Journal:  J Am Soc Mass Spectrom       Date:  2008-02-23       Impact factor: 3.109
  7 in total

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