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 ºC) 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 - 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.
Authors
- Maciej Tankiewicz,
- Calum Morrison,
- prof. dr hab. inż. Marek Biziuk link open in new tab
Additional information
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2013
