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

Allain, Fabrice; Virelizier, H.; Moulin, Christophe; Jankowski, Christopher K.; Dozol, Jean‐François; Tabet, J. C.

doi:10.1155/2000/687809

Cited by 27 publications

(27 citation statements)

References 36 publications

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“…These latter fractions, after spiking with NaCl, were analyzed separately using a Nermag R10-10 ESI-MS quadrupole instrument (see below , and semi-quantitative evaluation of extraction efficiency and limits of detection followed those described previously. 5 The calibration was done using both the MC-6 and BC-6 compounds as well as the closely related di-O-n-hexyl-MC-6. 5,7 The selectivity was expressed as a ratio of the ESI-MS intensity of a given metal complex calix [4] quadrupole mass spectrometer with a working m/z range 10-2000 was equipped with an Analytica of Branford ESI source and an HPS-30 version 3.7 data system (Quad Service, France).…”

Section: Cartridge Preconcentration Proceduresmentioning

confidence: 99%

“…5 The calibration was done using both the MC-6 and BC-6 compounds as well as the closely related di-O-n-hexyl-MC-6. 5,7 The selectivity was expressed as a ratio of the ESI-MS intensity of a given metal complex calix [4] quadrupole mass spectrometer with a working m/z range 10-2000 was equipped with an Analytica of Branford ESI source and an HPS-30 version 3.7 data system (Quad Service, France). The sample was introduced through a syringe pump (Harvard Apparatus 11, Cambridge, MA, USA), and a rate of 3 mL/min was first used in this series of experiments.…”

Section: Cartridge Preconcentration Proceduresmentioning

confidence: 99%

“…(ii) A triple-quadrupole Quattro II instrument (Micromass, Manchester, UK) was also used in this series of analyses using conditions similar to those previously described. 5 The sample was injected at 10 mL/min and source temperature maintained at 808C in this series of experiments. The positive ion mode was used, and the potential of the capillary was maintained at 3.35 kV.…”

Section: Cartridge Preconcentration Proceduresmentioning

confidence: 99%

“…As in a previous paper 5 we studied two crown extractants, namely, one with just one crown (monocrown: diisopropyl 18-crown-6, denoted as MC-6), and one with two crowns (biscrown: bis 18-crown-6, denoted as BC-6), both in the form of calix [4]arenes (Fig. 1).…”

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confidence: 99%

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Preliminary study of the stability of calix[4]arene crown compounds under radiolysis

Jankowski

Allain

Dozol

et al. 2003

Rapid Comm Mass Spectrometry

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The extraction of (135)Cs from high activity waste arising from reprocessing of spent fuel can be achieved by using calix[4]arene crown compounds. The radiolytic degradation of calix[4]arene crowns as well as their solvent, o-nitrophenyloctyl ether (NPOE), was studied using electrospray ionization mass spectrometry (ESI-MS) (that formed Cs(+) or Na(+) adducts) in nitric acid, as well as by chemical ionization tandem mass spectrometry (MS/MS) experiments. The structures of major degradation products were identified with MS and specifically labelled nitric acid. Although NPOE and calix[4]arene crowns alone are relatively stable, under simulated conditions resembling the real industrial processes involving radiolysis in the presence of nitric acid, several products resulting from nitration and oxidation were observed.

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Section: Cartridge Preconcentration Proceduresmentioning

confidence: 99%

Section: Cartridge Preconcentration Proceduresmentioning

confidence: 99%

Section: Cartridge Preconcentration Proceduresmentioning

confidence: 99%

mentioning

confidence: 99%

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Preliminary study of the stability of calix[4]arene crown compounds under radiolysis

Jankowski

Allain

Dozol

et al. 2003

Rapid Comm Mass Spectrometry

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“…The performance of this system was first studied on simulated waste and confirmed on real high-activity liquid waste, in tests employing liquid-liquid extraction 10,11 and/ or supported liquid membranes. 12 Hence, these compounds were extensively studied in several experimental 13 and molecular modelling investigations. 14,15 Extensive experiments in the nuclear industry with solvent systems indicate that the degradation of solvent due to exposure to radiolysis, and to a lesser extent hydrolysis, can significantly degrade its performance.…”

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confidence: 99%

High‐performance liquid chromatography with electrospray ionisation mass spectrometry and diode array detection in the identification and quantification of the degradation products of calix[4]arene crown‐6 under radiolysis

Lamouroux

Aychet

Lelièvre

et al. 2004

Rapid Comm Mass Spectrometry

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The extraction of 135Cs from high-activity liquid waste, arising from reprocessing of spent nuclear fuel, can be achieved by using calix[4]arene crown-6 compounds. The radiolytic degradation of di(n-octyloxy)calix[4]arene crown-6 (octMC6), in aliphatic or aromatic solvent in contact with 3 M nitric acid, was studied by high-performance liquid chromatography directly coupled to electrospray ionisation mass spectrometry (LC/ESI-MS). More than 50 distinct degradation products were observed, and about 30 of these were identified. These compounds can be assigned to three categories, namely, products of reactions involving radical cleavage or addition, of oxidation reactions, or of aromatic substitution reactions. The major product, corresponding to substitution by an NO2 group, was quantified by external standard calibration using a purified synthetic sample. Despite the observation of all these degradation compounds, octMC6 appears to be remarkably stable under these drastic conditions, combining hydrolysis (HNO(3) 3 M) and an extreme exposure to radiolysis (10(6) Gy). Less than 35% degradation of octMC6 was observed in aromatic solvent under these conditions.

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Mass Spectrometry and Gas‐Phase Ion Chemistry of Phenols

Kuck

2009

Patai's Chemistry of Functional Groups

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Introduction Gaseous Radical Cations Derived from Phenols: Thermochemistry of Some Typical Species and Reactions Unimolecular Fragmentation Reactions of Phenol Radical Cations The Effect of the Hydroxyl Group on the Reversible Intramolecular Hydrogen Transfer in Ionized Phenols Ortho Effects in Substituted Phenols Secondary Fragmentation Reactions of Phenol Radical Cations Miscellaneous Fragmentations of Phenol Radical Cations Chemical Ionization Mass Spectrometry of Phenols Ionized Phenol and Cyclohexa‐1,3‐Dien‐5‐One ( ortho ‐Isophenol) Generated by Fragmentation of Precursor Ions Ion/Molecule Reactions of Phenols in the Gas Phase Gaseous Phenol Anions Miscellaneous Analytical Examples Mass Spectrometry of Calixarenes Phenolic Compounds as Maldi Matrices Acknowledgements

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

Cited by 27 publications

References 36 publications

Preliminary study of the stability of calix[4]arene crown compounds under radiolysis

Preliminary study of the stability of calix[4]arene crown compounds under radiolysis

High‐performance liquid chromatography with electrospray ionisation mass spectrometry and diode array detection in the identification and quantification of the degradation products of calix[4]arene crown‐6 under radiolysis

Mass Spectrometry and Gas‐Phase Ion Chemistry of Phenols

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