Electrospun nanostructured polystyrene as a new coating material for solid-phase microextraction: Application to separation of multipesticides from honey samples

Zali, Sara; Jalali, Fahimeh; Es-haghi, Ali; Shamsipur, Mojtaba

doi:10.1016/j.jchromb.2015.07.061

Cited by 32 publications

(14 citation statements)

References 48 publications

(53 reference statements)

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“…The figures of merit of the developed MSPME combined with HPLC method were compared with recently published literature for the extraction and determination of diazinon and malathion (Table ) by chromatographic method. As it is observed, the proposed method exhibits higher preconcentration factors compared to the other extraction methods so that its detection limit is even lower than separation methods combined with more sensitive and expensive instrument such as GC–MS or HPLC–MS/MS . The precision and the linear dynamic range of the method is also comparable to the previously reported methods.…”

Section: Resultssupporting

confidence: 58%

“…However, due to the very low concentration of OPPs in environmental samples as well as the matrices interferences, their direct determination by chromatographic methods, such as HPLC and GC, is not possible and a separation/preconcentration step is often necessary. Several pretreatment methods including cloud point extraction [5], dispersive liquid–liquid microextraction , headspace solid‐phase microextraction , SPE , and SPME have been reported for the separation, enrichment, and sample cleanup of the OPPs residue in various matrices. SPE and SPME are the most extensively used sample pretreatment method with the advantages of short extraction time, safety, low consumption of organic solvent, simplicity, and possibility of achieving high enrichment factor .…”

Section: Introductionmentioning

confidence: 99%

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Preparation of magnetic mesoporous silica composite for the solid‐phase microextraction of diazinon and malathion before their determination by high‐performance liquid chromatography

Bazmandegan‐Shamili

Shabani

Dadfarnia

et al. 2017

J of Separation Science

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A novel magnetic mesoporous silica material was synthesized and used as the sorbent for the magnetic solid-phase microextraction of diazinon and malathion before their quantification by high-performance liquid chromatography with UV detection. The sorbent was synthesized by a surfactant-templated one-pot sol-gel procedure using SiO -coated Fe O as the magnetic support, cetyltrimethylammonium bromide as the template and tetraethyl orthosilicate as the silicon source. The characteristics of the prepared sorbent were investigated using Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction. The sorbent exhibited a high maximum adsorption capacity of 19.2 and 9.4 mg/g for diazinon and malathion, respectively. The parameters affecting the microextraction were optimized by the MultiSimplex method. Under the optimized conditions, the calibration graphs were linear in the concentration ranges of 0.3-50.0 and 0.5-50 μg/L with the limits of detection of 0.09 and 0.14 μg/L for diazinon and malathion, respectively. The relative standard deviations (n = 5) at a concentration level of 10.0 μg/L of analytes were less than 2.5 and 4% for intra and interday, respectively. The developed method was successfully used for the determination of diazinon and malathion in apple, tomato, cucumber, tap water, and well water samples.

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Section: Resultssupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Preparation of magnetic mesoporous silica composite for the solid‐phase microextraction of diazinon and malathion before their determination by high‐performance liquid chromatography

Bazmandegan‐Shamili

Shabani

Dadfarnia

et al. 2017

J of Separation Science

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“…Considering these various advantages and disadvantages, methods for analyzing residual pesticides in honey have been continuously developed. However, in many countries and public organizations, SPE is the mainly employed authorized method for the analysis of residual pesticide in honey …”

Section: Introductionmentioning

confidence: 99%

“…However, in many countries and public organizations, SPE is the mainly employed authorized method for the analysis of residual pesticide in honey. [11][12][13][14][15][16] The QuEChERS method has good concentration and purification effects and showed a LOQ of 5 μg/kg using the multiple reaction monitoring (MRM) mode of GC/MS. 9 In addition, the extraction time is short (within 20 min) and the extraction process is simple and convenient.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Analysis of Residual Famphur in Several Species of Honey Using Gas Chromatography/Mass Spectrometry

Lee

Myung

2019

Bulletin Korean Chem Soc

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Famphur is one of the pesticides used in bee‐farming and is a highly hazardous pesticide, as classified by the World Health Organization (WHO). In this study, a method analyzing the residual famphur in four kinds (acasia, wild, chestnut, and manuka) of honey was established, using gas chromatography–mass spectrometry (GC/MS) after effective sample preparation with solid‐phase extraction (SPE). Optimization of SPE parameters for sample pretreatment was performed by varying the pH of sample and the volume and type of the extraction solvent. Gas chromatographic separation was carried out using a DB‐35 MS column (30 m length × 0.20 mm i.d. × 0.33 μm film thickness). Based on the established sample preparation technique and GC/MS parameters, the limits of detection (LOD) and quantitation (LOQ) in fortified sample were 2 ng/g and 5 ng/g, respectively. The precision and accuracy within the calibration curves were 1.0–27.7 RSD % and 63.7–118.4%, respectively. The square of the correlation coefficients (r2) obtained from the concentration range (5–50 ng/g) of calibration curves for quantitative assay was 0.9883 to 0.9958. The established method was applied to the analysis of famphur in domestic and imported honey samples.

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“…[3][4][5][6] Triazole fungicides as the ourishing new generation of pesticides are widely applied to grain crops, vegetables, and fruits. The residue can not only stay in the edible parts of crops, but also be transferred to other agricultural products through food chain transmission.…”

Section: Introductionmentioning

confidence: 99%

Magnetic dispersive solid-phase extraction based on a novel adsorbent for the detection of triazole pesticide residues in honey by HPLC-MS/MS

et al. 2016

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A novel Fe 3 O 4 @MDN magnetic nanomaterial was successfully developed as a magnetic dispersive solidphase extraction adsorbent for the determination of triazole pesticide residuals in honey samples by high performance liquid chromatography coupled with triple quadrupole mass spectrometry (HPLC-MS/MS). The macromolecular structure named MDN was coated on the surface of a copolymer synthesized with silyl reagents methacrylic acid-3-(trimethoxysilyl) propyl ester (MPS) and tetraethyl orthosilicate (TEOS) based on ferriferrous oxide (Fe 3 O 4 ), whose characteristics were confirmed by a scanning electron microscope (SEM). The proposed magnetic dispersive solid-phase extraction (MDSPE) method provided a rapid, environmentally friendly and magnetic stuff recyclable approach for the triazole pesticide analysis. By means of optimal conditions, the recoveries of 15 triazoles (spiked at 20 mg kg À1 ) ranged from 90.5 to 105.9%. The method showed good linearity, sensitivity in the range of mg per kilogram and repeatability (relative standard deviation below 6.8%, n ¼ 5). The proposed method was confirmed to be a simple, rapid and efficient method for the analysis of triazole pesticide residuals in honey samples.

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Electrospun nanostructured polystyrene as a new coating material for solid-phase microextraction: Application to separation of multipesticides from honey samples

Cited by 32 publications

References 48 publications

Preparation of magnetic mesoporous silica composite for the solid‐phase microextraction of diazinon and malathion before their determination by high‐performance liquid chromatography

Preparation of magnetic mesoporous silica composite for the solid‐phase microextraction of diazinon and malathion before their determination by high‐performance liquid chromatography

An Efficient Analysis of Residual Famphur in Several Species of Honey Using Gas Chromatography/Mass Spectrometry

Magnetic dispersive solid-phase extraction based on a novel adsorbent for the detection of triazole pesticide residues in honey by HPLC-MS/MS

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