Development of a magnetic dispersive solid phase extraction method by employing folic acid magnetic nanoparticles as an effective, green, and reliable sorbent followed by dispersive liquid-liquid microextraction for the extraction and preconcentration of seven pesticides from fruit juices

Farajzadeh, Mir Ali; Niazi, Shokoufeh; Dabbagh, Masoumeh Sattari

doi:10.1007/s00604-021-04970-3

Cited by 5 publications

(1 citation statement)

References 37 publications

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“…After screening the literature, a very few analytical methods have been reported for the analysis of clodinafop in environmental samples. For example, liquid chromatography (LC), supercritical fluid chromatography, liquid–liquid microextraction (LLME) coupled with gas chromatography–mass spectrometry (GC–MS), , ultraperformance liquid chromatography–electrospray ionization–mass spectrometry (UPLC-ESI-MS, and magnetic dispersive solid-phase extraction coupled with LLME–GC–MS have been recognized as gold standard analytical strategies for the quantification of various herbicides including clodinafop in vegetables and environmental samples. These analytical strategies have illustrated that clodinafop was efficiently detected with high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Perovskite Quantum Dots for Fluorescence Turn-Off Detection of the Clodinafop Pesticide in Food Samples via Liquid–Liquid Microextraction

Vajubhai

Chetti

Kailasa

2022

ACS Appl. Nano Mater.

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Herein, red fluorescent CsPbI 3 perovskite quantum dots (PQDs) are successfully synthesized by a one-step reaction via a microwave irradiation method. The as-fabricated CsPbI 3 PQDs displayed a strong emission intensity at 686 nm when applied with a λ Ex of 350 nm. The as-synthesized CsPbI 3 PQDs were dispersed in hexane, and the quantum yield of CsPbI 3 PQDs was 27%. The CsPbI 3 PQDs were successfully integrated with liquid−liquid microextraction for the analysis of the clodinafop pesticide by fluorescence spectrometry. The emission peak of CsPbI 3 PQDs at 686 nm was quenched (∼94%) by the clodinafop pesticide using hexane as a solvent, resulting in a dramatic change in fluorescence from red to nonfluorescence. The sensing mechanism was demonstrated by studying various techniques including fluorescence lifetime, high-resolution transmission electron microscopy, Fourier transform infrared spectroscopy, and density functional theory. The developed probe exhibited a good linearity over the concentration of clodinafop in the range of 0.1−5 μM with a limit of detection of 34.70 nM. The CsPbI 3 PQDs could be used as a sensor for the quantification of clodinafop in vegetable, fruit, and grain samples. The developed method displayed good recoveries from 97 to 100% with lower relative standard deviations for the analysis of clodinafop in spiked samples, signifying that CsPbI 3 PQDs could be used as a promising sensor for the detection of clodinafop in food samples.

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