Multi-residue method for the determination of 16 recently used pesticides from various chemical groups in aqueous samples by using DI-SPME coupled with GC-MS

MacIej Tankiewicz*, Calum Morrison, Marek Biziuk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)

Abstract

A simple and solvent-free multi-residue method has been optimized to determine 16 currently used pesticides from different chemical groups in aqueous samples. The extraction of analytes was carried out with direct immersion solid-phase microextraction (DI-SPME) and for the identification and quantitative determination gas chromatography coupled with mass spectrometry (GC-MS) was applied. Two commonly used adsorbent coatings have been applied and compared: 100 μm of polydimethylsiloxane (PDMS) and 85 μm of polyacrylate (PA). The method development parameters of DI-SPME, analyte desorption and GC-MS analysis have been outlined along with the final experimental conditions. When the optimum extraction conditions were applied (extraction time 60 min, 10% (w/v) NaCl solution, 45 °C) the limits of detection (LODs) were in the range of 0.015-0.13 μg L-1 and the relative standard deviations (RSDs) were between 1.9 and 9.6%. The developed analytical method was successfully applied to the analysis of natural water samples from the following sources: river, sea, canal and rain.

Original languageEnglish
Number of pages10
JournalTalanta
Volume107
Early online date7 Jan 2013
DOIs
Publication statusPublished - 30 Mar 2013
Externally publishedYes

Keywords

  • Multi-residue method
  • Direct-immersion solid-phase microextraction (DI-SPME)
  • GC–MS
  • Pesticides
  • Water samples

ASJC Scopus subject areas

  • Analytical Chemistry

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