ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of ethalfluralin in soy flour samples using MnO₂-deep eutectic solvent based nanofluid for its preconcentration prior to GC-FID measurement

Selim Gürsoy, Miray Bombom, Buse Tuğba Zaman, Fatma Turak, Elif Öztürk Er, Ümmügülsüm Polat Korkunç, and Sezgin Bakırdere

Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Türkiye

E-mail: bsezgin23@yahoo.com

Received: 28 October 2023  Accepted: 6 June 2024

Abstract:

In the present study, a dispersive solid-phase extraction based on colloidal gel is presented for rapid/efficient determination of ethalfluralin with high precision and accuracy. The synthesis of colloidal gel was accomplished by combining manganese dioxide (MnO₂) nanoparticles with the deep eutectic solvent (DES) as the preferred ionic fluid. Using a one-factor-at-a-time approach, variables affecting the extraction efficiency of the developed method were optimized to achieve the highest extraction efficiency and stability for the determination of the target analyte. In line with data obtained, the limit of detection value for the target analyte was determined to be 10.2 µg/kg. In order to demonstrate the accuracy/applicability of the developed method in complex matrices, different soy flour samples were utilized, and extraction procedures were conducted under pre-determined optimal method conditions. Matrix matching calibration strategy was applied to spiked samples, followed by the determination of percent recovery results ranging between 92.1 and 114.2%.

Keywords: Pesticide; Microextraction; Manganese dioxide; Gas chromatography—flame ionization detector (GC FID); Nanofluid; Deep eutectic solvent

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-024-03553-9

Chemical Papers 78 (11) 6545–6552 (2024)