Microchimica Acta

, 185:179 | Cite as

A star-shaped polythiophene dendrimer coating for solid-phase microextraction of triazole agrochemicals

  • Mir Mahdi Abolghasemi
  • Rahim Habibiyan
  • Mehdi Jaymand
  • Marzieh Piryaei
Original Paper
  • 8 Downloads

Abstract

A nanostructured star-shaped polythiophene dendrimer was prepared and used as a fiber coating for headspace solid phase microextraction of selected triazolic pesticides (tebuconazole, hexaconazole, penconazole, diniconazole, difenoconazole, triticonazole) from water samples. The dendrimer with its large surface area was characterized by thermogravimetric analysis, UV–Vis spectroscopy and field emission scanning electron microscopy. It was placed on a stainless steel wire for use in SPME. The experimental conditions for fiber coating, extraction, stirring rate, ionic strength, pH value, desorption temperature and time were optimized. Following thermal desorption, the pesticides were quantified by GC-MS. Under optimum conditions, the repeatability (RSD) for one fiber (for n = 3) ranges from 4.3 to 5.6%. The detection limits are between 8 and 12 pg mL−1. The method is fast, inexpensive (in terms of equipment), and the fiber has high thermal stability.

Graphical abstract

Schematic presentation of a nanostructured star-shaped polythiophene dendrimer for use in headspace solid phase microextraction of the triazolic pesticides (tebuconazole, hexaconazole, penconazole, diniconazole, difenoconazole, triticonazole). They were then quantified by gas chromatography–mass spectrometry.

Keywords

Conductive polymer Dendrimer Solid phase-microextraction Triazol Fungicide Gas chromatography 

Notes

Compliance with ethical standards

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

Supplementary material

604_2017_2639_MOESM1_ESM.docx (3.2 mb)
ESM 1 (DOCX 3.17 MB)

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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 ScienceUniversity of MaraghehMaraghehIran
  2. 2.Immunology Research CenterTabriz University of Medical SciencesTabrizIran

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