Graphene Oxide/Polyamide Nanocomposite as a Novel Stir Bar Coating for Sorptive Extraction of Organophosphorous Pesticides in Fruit Juice and Vegetable Samples

Ayazi, Zahra; Jaafarzadeh, Raana

doi:10.1007/s10337-017-3364-5

Cited by 21 publications

(3 citation statements)

References 32 publications

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“…The main difference between SPME and SBSE is that SBSE uses an extraction phase about 50–250 times larger than SPME, resulting in higher absolute recoveries and higher sample capacity (He, Chen, & Hu, ). SBSE has found applications in environmental analysis (He et al, ), food analysis (Ayazi & Jaafarzadeh, ; Yao et al, ; You, He, Chen, & Hu, ) and bioanalysis (Manandhar, Maslamani, Petrikovics, Rockwood, & Logue, ). General review articles about SBSE are available (He et al, ; Nogueira, ).…”

Section: Classification Of Microextraction Methodsmentioning

confidence: 99%

Microextraction sample preparation techniques in forensic analytical toxicology

Concheiro

2018

Biomedical Chromatography

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Sample preparation is a critical step in forensic analytical toxicology. Different extraction techniques are employed with the goals of removing interferences from the biological samples, such as blood, tissues and hair, reducing matrix effects and concentrating the target analytes, among others. With the objective of developing faster and more ecological procedures, microextraction techniques have been expanding their applications in the recent years. This article reviews various microextraction methods, which include solid-based microextraction, such as solidphase microextraction, microextraction by packed sorbent and stir-bar sorptive extraction, and liquid-based microextraction, such as single drop/hollow fiber-based liquid-phase microextraction and dispersive liquid-liquid microextraction, as well as their applications to forensic toxicology analysis. The development trend in future microextraction sample preparation is discussed.

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Section: Classification Of Microextraction Methodsmentioning

confidence: 99%

Microextraction sample preparation techniques in forensic analytical toxicology

Concheiro

2018

Biomedical Chromatography

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“…However, due to the matrix complexity and the presence of much potential interference in real samples, different extraction and preconcentration methods are needed prior to the instrumental analysis. Up to now, several classical and modern methods, including dispersive liquid–liquid microextraction (DLLME) [8], stir bar sorptive extraction [9], dispersive SPME [10], matrix SPE [10], temperature‐controlled liquid–liquid microextraction [11], and SPME [12], have been developed for the extraction and preconcentration of the OPPs from real samples. Among these techniques, SPE and SPME have remarkable advantages for sample pretreatment due to their simple operation, high enrichment factor (EF), less solvent consumption compared to LLE, safety and compatibility with various detection systems such as HPLC, GC, and CE [13].…”

Section: Introductionmentioning

confidence: 99%

Preparation of magnetic molecularly imprinted polymer based on multiwalled carbon nanotubes for selective dispersive micro‐solid phase extraction of fenitrothion followed by ion mobility spectrometry analysis

Khojasteh

Bazmandegan‐Shamili

2022

J of Separation Science

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A novel molecularly imprinted polymer based on magnetic multiwalled carbon nanotubes was fabricated and applied for selective dispersive micro‐solid phase extraction of fenitrothion prior its determination by ion mobility spectrometry. The composite was synthesized using magnetic multiwalled carbon nanotubes as the support. Methacrylic acid was used as the functional monomer, fenitrothion as the template, ethylene glycol dimethacrylate as the cross‐linker, and 2,2‐azoisobutyronitrile as the initiator. The resultant polymer was characterized by FTIR spectroscopy, X‐ray diffraction, field emission scanning electron microscopy, Brunauer–Emmet–Teller analysis, thermogravimetric analysis, and vibrating sample magnetometer techniques. Experimental factors affecting the extraction efficiency such as pH and amount of sorbent were evaluated. Under optimum experimental conditions, the developed method displayed the linear range of 5–220 μg/L with a detection limit of 1.3 μg/L. The intra‐ and interday relative standard deviations for determination of fenitrothion were 3.6 and 4.7% (n = 6), respectively. Ultimately, the proposed method was used to monitor trace amounts of fenitrothion in fruits, vegetables, and water samples.

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“…With technological advancements, the development of sample pretreatment is geared toward the direction of saving time, labour, and cost and reducing environmental pollution, as well as miniaturisation and automation. The various sample-pretreatment methods presently used to analyse pesticide in food and environmental samples include solid-phase extraction (SPE) (Shamsipur et al 2016;Wang et al 2015), solid-phase microextraction (SPME) (Zhang et al 2017), dispersive liquid-liquid microextraction (Ho et al 2013;Takaya et al 2016), magnetic SPE (Dozein et al 2021), magnetic solvent bar liquid-phase microextraction (Wu et al 2015), molecularly imprinted polymers (Boulanouar et al 2018), stir-bar sorptive extraction (Ayazi and Jaafarzadeh 2017;Grossi et al 2008), and QuEChERs (Li et al 2014). These techniques are consistent with the principles of green chemistry as they use small amounts of sorbents and reduce the consumption of toxic organic solvents (Stocka et al 2011), rendering them cost-effective and environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

An Improved Stir Fabric-Phase Sorptive Extraction Combined with Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry Analysis for the Determination of 48 Pesticide Residues in Vegetable Samples

et al. 2021

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Fabric-phase sorptive extraction (FPSE) coats organic-inorganic hybrid sorbent materials onto flexible and hydrophilic fabrics through sol-gel sorbent-coating technology. Herein, we explored four different coating chemistries, including those of nonpolar sol-gel poly(dimethylsiloxane), medium polar sol-gel poly(tetrahydrofuran), and polar sol-gel poly(ethylene glycol) (PEG)-block-poly(propylene glycol)-PEG, and sol-gel PEG. Results showed that PEG had the best extraction recoveries for the majority of the analytes. Subsequently, strongly polar sol-gels were prepared using PEG as precursor and FPSE medium. FPSE was then combined with a cut solid-phase extraction column and immobilised with magnetic-stirring beads so that FPSE could be automatically stirred magnetically throughout the entire extraction process. The developed method based on ultra-high-performance liquid chromatography-tandem mass spectrometry showed good linearity within the concentration range of 5-200 ng/mL. Under the optimum experimental conditions, limits of detection for 48 pesticides were obtained within the range of 0.014-6.280 ng/mL. Thereafter, the new method was applied to tomato, cucumber, and cabbage samples. Recoveries ranged from 71.4 to 99.8% at three concentration levels. The various parameters of this experimental method were systematically investigated and optimised to improve its sensitivity and prove its feasibility in vegetables. Overall, our results demonstrated that the method was simple, sensitive, efficient, and rapid. Furthermore, FPSE fibre cloth showed great potential for commercial exploitation because of its reusability.

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Graphene Oxide/Polyamide Nanocomposite as a Novel Stir Bar Coating for Sorptive Extraction of Organophosphorous Pesticides in Fruit Juice and Vegetable Samples

Cited by 21 publications

References 32 publications

Microextraction sample preparation techniques in forensic analytical toxicology

Microextraction sample preparation techniques in forensic analytical toxicology

Preparation of magnetic molecularly imprinted polymer based on multiwalled carbon nanotubes for selective dispersive micro‐solid phase extraction of fenitrothion followed by ion mobility spectrometry analysis

An Improved Stir Fabric-Phase Sorptive Extraction Combined with Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry Analysis for the Determination of 48 Pesticide Residues in Vegetable Samples

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