Magnetic solid-phase extraction of organophosphorus pesticides from apple juice and environmental water samples using magnetic graphene oxide coated with poly(2-aminoterephthalic acid-co-aniline) nanocomposite as a sorbent.
Maryam NasiriHossein AhmadzadehAmirhassan AmiriPublished in: Journal of separation science (2022)
An effective magnetic solid-phase extraction method was proposed using magnetic graphene oxide coated with poly(2-aminoterephthalic acid-co-aniline) as a sorbent for preconcentration and extraction of organophosphorus pesticides from environmental water and apple juice samples, and determined using the gas chromatography-mass spectrometry analysis. To approve the successful synthesis of the magnetic nanocomposite, the prepared sorbent was characterized by field emission scanning electron microscopy, X-ray diffraction, vibrating sample magnetometer, and Fourier transforms infrared techniques. The main parameters affecting the extraction efficiency were considered and studied to afford an optimized procedure. Systematic method validation verified its suitable recoveries (89.4-107.3%), and precision (relative standard deviations < 6.8%). The method showed a wide linear dynamic range (0.04-700 ng/mL) with low limits of detection (0.01-0.06 ng/mL) and quantification (0.04-0.21 ng/mL). This method presented good potential and great sensitivity for the pesticides determination.
Keyphrases
- solid phase extraction
- molecularly imprinted
- gas chromatography mass spectrometry
- gas chromatography
- electron microscopy
- high performance liquid chromatography
- liquid chromatography tandem mass spectrometry
- tandem mass spectrometry
- simultaneous determination
- liquid chromatography
- ultra high performance liquid chromatography
- risk assessment
- human health
- high resolution
- mass spectrometry
- high resolution mass spectrometry
- computed tomography
- minimally invasive
- climate change
- ms ms
- contrast enhanced
- reduced graphene oxide