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Volume 14 (2000), Issue 3, Pages 127-139

Electrospray-mass spectrometric studies of selectivity of alkali metal cations extraction by calix[4]arene crowns

F. Allain,1 H. Virelizier,1 C. Moulin,1 C. K. Jankowski,1,4 J. F. Dozol,2 and J. C. Tabet3

1DCC/DPE/SPCP/LASO, CEA Saclay, BP2, 91191 Gif/Yvette, France
2DCC/DESD/SEP, CEA Cadarache, 13108 Saint Paul Lez Durance Cedex, France
3Université de P. et M. Curie, Paris VI, Laboratoire de Chimie Structurale Organique et Biologique UMR 7613, 75252 Paris, France
4Département de chimie et biochimie, Université de Moncton, NB, E1A 3E9, Canada

Received 7 November 1999; Accepted 15 February 2000

Copyright © 2000 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Electrospray Ionization Mass Spectrometry (ESI/MS) has quickly become a versatile method of qualitative analysis of a wide variety of host–guest complexes formed in solution. However, considerable controversy exists on how ESI spectra quantitatively reflect and compare to the results obtained on these complexes. The extraction of alkali cations from acidic aqueous solutions by nine various calix[4]arenes-crown-6 diluted in NPOE, was studied by using ESI/MS. The stoichiometry of cesium complex and Cs+/Na+ selectivity were evaluated.