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Open AccessArticle

Analytical Methodology for Trace Determination of Propoxur and Fenitrothion Pesticide Residues by Decanoic Acid Modified Magnetic Nanoparticles

1
Department of Analytical Chemistry, Faculty of Pharmacy, Cumhuriyet University, 58140 Sivas, Turkey
2
Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, 38039 Kayseri, Turkey
3
ERNAM-Erciyes University Nanotechnology Application and Research Center, 38039 Kayseri, Turkey
4
Department of Chemistry and Biochemistry, International Forensic Research Institute, Florida International University, 11200 SW 8th St, Miami, FL 33199, USA
5
Department of Pharmacy, University of Chieti-Pescara “G. d’Annunzio”, Via dei Vestini 31, 66100 Chieti, Italy
*
Authors to whom correspondence should be addressed.
Academic Editor: Rafael Lucena
Molecules 2019, 24(24), 4621; https://doi.org/10.3390/molecules24244621
Received: 2 November 2019 / Revised: 6 December 2019 / Accepted: 13 December 2019 / Published: 17 December 2019
A sensitive, rapid, reliable, and easily applicable method based on magnetic solid phase extraction (MSPE) combined with HPLC-PDA was developed for monitoring propoxur (PRO) and fenitrothion (FEN) pesticides in environmental water samples. The effect of major experimental variables on the extraction efficiency of both the pesticides was investigated and optimized systematically. For this purpose, a new magnetic material containing decanoic acid on the surface of particles was synthesized and characterized by XRD, FT-IR, SEM, EDX, and TGA analysis in detail. The simultaneous determination of pesticide molecules was carried out by using a Luna Omega C18 column, isocratic elution of acetonitrile (ACN): Water (70:30 v/v) with a flow rate of 1.2 mL min−1. After MSPE, the linear range for pesticide molecules (r2 > 0.9982) was obtained in the range of 5–800 and 10–800 ng mL−1, respectively. The limit of detections (LOD) are 1.43 and 4.71 ng mL−1 for PRO and FEN, respectively while RSDs % are below 3.5%. The applicability of the proposed method in four different environmental samples were also investigated using a standard addition-recovery procedure. Average recoveries at two spiking levels were over the range of 91.3–102.5% with RSD < 5.0% (n = 3). The obtained results show that decanoic acid grafted magnetic particles in MSPE combined with HPLC-PDA is a fast and simple method for the determination of PRO and FEN in environmental water samples. View Full-Text
Keywords: fenitrothion; propoxur; HPLC; magnetic solid phase extraction; environmental water samples fenitrothion; propoxur; HPLC; magnetic solid phase extraction; environmental water samples
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Canlı, A.G.; Sürücü, B.; Ulusoy, H.İ.; Yılmaz, E.; Kabir, A.; Locatelli, M. Analytical Methodology for Trace Determination of Propoxur and Fenitrothion Pesticide Residues by Decanoic Acid Modified Magnetic Nanoparticles. Molecules 2019, 24, 4621.

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