Microchimica Acta

, 185:176 | Cite as

A hybrid material composed of a polyoxometalate of type BeW12O40 and an ionic liquid immobilized onto magnetic nanoparticles as a sorbent for the extraction of organophosphorus pesticides prior to their determination by gas chromatography

  • Amirhassan Amiri
  • Hamid Reza Saadati-Moshtaghin
  • Farokhzad Mohammadi Zonoz
Original Paper
  • 6 Downloads

Abstract

The authors describe a method for the extraction of organophosphorus pesticides (OPPs) by using a magnetically separable sorbent consisting of a polyoxometalate of type BeW12O40 supported on imidazole functionalized silica-coated cobalt ferrite. The sorbent was characterized by X-ray powder diffraction, field-emission scanning electron micrographs, vibrating sample magnetometry and FT-IR. The effects of the amount of adsorbent, pH value, salt concentration, extraction time, desorption solvent nature and volume and desorption time were investigated. Under optimal conditions, the method resulted in the following figures of merit: (a) the linear parts of the calibration plots typically extend from 0.08 to 300 μg mL−1 of OPPs; (b) detection limits are between 0.02 to 0.06 ng mL−1; and (c), extraction recoveries from spiked samples vary from 70.0 to 89.2%, with relative standard deviations between 5.4 and 7.6%. The nanocomposites can be reused up to 10 times. Compared to other methods for pretreatment and preconcentration of OPPs, the new method is more rapid, sensitive, accurate and eco-friendly. The method was successfully applied to the determination of the OPP residues in water samples and fruit juices.

Graphical Abstract

Schmatic presenation of the synthesis of core-shell magnetic nanoparticles (MNPs) of the type BeW12O40-ILSCCFNPs, and their application as sorbent for magnetic solid-phase extraction (MSPE) of organophosphorus pesticides.

Keywords

Polyoxometalate Ionic liquid Diazinon Phosalone Fenthion Fenitrothion Profenofos Magnetic nanoparticles Keggin structure GC-FID 

Notes

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Supplementary material

604_2018_2713_MOESM1_ESM.docx (2.1 mb)
ESM 1 (DOCX 2165 kb)

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of SciencesHakim Sabzevari UniversitySabzevarIran

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