Quantification of Perchlorate Anions in Water
Using a Bambusuril Macrocycle
Julián Vázquez and Vladimir Šindelář
Department of Chemistry and RECETOX, Masaryk University,
Kamenice 5, 625 00, Brno, Czech Republic
Email: sindelar@chemi.muni.cz
Abstract
The presence of perchlorate anion (ClO4
−
) in drinking water is a matter of concern due to its
poisoning effects and its challenging detection.1,2
Bambusuril macrocycles can selectively
bind ClO4
−
over other anionic species and separate it from the matrix prior the analysis.
Bambusurils have already shown potential applications for determination of anions in
solution by NMR spectroscopy.3
Other macrocyclic compounds such us crown ethers,
calixarenes or cryptands have been used as carriers for phase-transfer catalysis, where the
inclusion of macrocyclic receptors increases drastically the reaction rate, as they carry the
ionic reactant from aqueous into organic phase.4,5
Herein, a Bambusuril derivative has been
used for the quantification of ClO4
−
in water based on a phase-transfer extraction and
detected via UV/Vis spectroscopy.
Figure 1. Schematic representation of the phase-transfer extraction process of ClO4
−
due to
its complexation within the receptor in the organic phase.
References
[1] R. Calderón, F. Godoy, M. Escudey, P. Palma, Environmental Monitoring and
Assessment, 2017, 189, 82; [2] M. L. Magnuson, E. T. Urbansky, C. A. Kelty, Anal. Chem.,
2000, 72, 25-29; [3] V. Havel, V. Sindelar, ChemPlusChem, 2015, 80, 1601-1606;[4] C. M.
Starks, J. Am. Chem. Soc., 1971, 93, 195-199; [5] D. Landini, A. Maia and F. Montanari,
Chemical Communications, 1977, 0, 112-113