In-situ sorbent formation for the extraction of pesticides from honey.
J Sep Sci
; 45(14): 2652-2662, 2022 Jul.
Article
en En
| MEDLINE
| ID: mdl-35596522
ABSTRACT
An organic polymer was re-precipitated in solution to use as an adsorbent in dispersive solid-phase extraction of some pesticides from honey samples prior to their determination by high-performance liquid chromatography-tandem mass spectrometry. In this approach, different deep eutectic solvents were prepared using lysine and their ability in elution of the analytes from the adsorbent surface was tested. A diluted honey solution was transferred into a glass test tube and then a solution of polystyrene dissolved in dimethylformamide was injected into the solution. By doing this, polystyrene is re-precipitated in the solution and dispersed in whole parts of it as many tiny particles. Then the mixture was centrifuged and the adsorbed analytes on the particles were eluted using a proper hydrophilic deep eutectic solvent. The central composite design approach was used for the optimization of effective parameters. The limits of detection and quantification were in the ranges of 0.06-0.20 and 0.22-0.69 ng/g, respectively. The calibration curves obtained by matrix-matched standard solutions were linear in the range of 0.69-500 ng/g with a coefficient of determinations ≥0.9962. The method provided high extraction recoveries (70-99%) and enrichment factors (140-198), and an acceptable precision (relative standard deviations ≤7.1%).
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Plaguicidas
/
Microextracción en Fase Líquida
/
Miel
Idioma:
En
Revista:
J Sep Sci
Año:
2022
Tipo del documento:
Article
País de afiliación:
Irán