Surface modified-magnetic nanoparticles by molecular imprinting for the dispersive solid-phase extraction of triazines from environmental waters

Journal of Separation Science
Esther TurielAntonio Martín-Esteban

Abstract

Magnetic nanoparticles have been surface modified by molecular imprinting and evaluated as selective sorbents for the extraction of triazines from environmental waters. The use of propazine as template allowed us to synthesize a selective material able to simultaneously recognize and selective extract not only the template but also several other herbicides of the same family. A magnetic molecularly imprinted-based dispersive solid-phase extraction procedure was developed and fully optimized. Magnetic molecularly imprinted polymer particles can be easily collected and separated from liquid solvents and samples with the help of an external magnetic field, avoiding in that way any centrifugation or filtration steps, which represents a remarkable advantage over traditional procedures. Under optimum conditions, selective extraction of several triazines (cyanazine, simazine, atrazine, propazine, and terbutylazine) from environmental water samples was performed prior to final determination by high-performance liquid chromatography with diode-array detection. Recoveries for the studied triazines were within the range of 75.2-94.1%, with relative standard deviations lower than 11.3% (n = 3). The limits of detection were within 0.16-0.51...Continue Reading

References

Dec 5, 2003·Journal of the American Chemical Society·Beate DirionBörje Sellergren
Mar 24, 2015·Journal of Agricultural and Food Chemistry·Shan Shan MiaoHong Yang
Nov 20, 2016·Journal of Molecular Recognition : JMR·María José Patiño-RoperoAntonio Martín-Esteban
May 6, 2017·Journal of Separation Science·Miguel García-FernándezAntonio Martín-Esteban
Nov 8, 2019·Analytical Chemistry·Valérie PichonAudrey Combès

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