Extraction and preconcentration of organophosphorus pesticides from water samples and fruit juices utilizing hydroxyapatite/Fe3O4 nanocomposite

Chahkandi, Mohammad; Amiri, Amirhassan; Arami, Seyedeh Roghayyeh Saadatdar

doi:10.1016/j.microc.2018.09.018

Cited by 48 publications

(9 citation statements)

References 43 publications

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“…In continuation of our previous researches on the design and application of heterogeneous and reusable solid catalysts in organic synthesis and MCRs, here we report an efficient and green method for the synthesis of 3,4‐disubstituted isoxazole‐5(4H)‐ones catalyzed by HAp nanoparticles (Scheme ).…”

Section: Resultsmentioning

confidence: 94%

Synthesis and characterization of nanocrystalline hydroxyapatite and its catalytic behavior towards synthesis of 3,4‐disubstituted isoxazole‐5(4H)‐ones in water

Maleki

Chahkandi

Tayebee

et al. 2019

Applied Organom Chemis

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In the present work, the nanocrystalline particles of hydroxyapatite (HAp) using an easy alkoxide‐based sol–gel technique including triethyl phosphate [PO (OC2H5)3] and Ca (NO3)2·4H2O as P and Ca precursors have been synthesized. The sample characterization was performed by X‐ray diffraction, Fourier transform‐infrared analysis, scanning electron microscopy, thermal analysis (thermogravimetric analysis/differential thermal analysis), and elemental analysis of energy‐dispersive X‐ray analysis. It is interesting that single phase of HAp was obtained at a low firing temperature of 500°C. Modified Scherrer equation as the Williamson−Hall method was applied for the measurement of crystallite size distributions and micro‐strain of the sample. The determined crystallite size by complementary technique of transmission electron microscopy has good consistency with those obtained from the Scherrer formula. Moreover, we reported the one‐pot synthesis of 3,4‐disubstituted isoxazole‐5(4H)‐ones through the aqueous solution reaction of three components of ethyl acetoacetate, hydroxylamine hydrochloride and various aromatic aldehydes at room temperature. This protocol offers several advantages, including a simple work‐up procedure, very short reaction times (under 25 min), in accordance with the principles of green chemistry, recyclability, excellent yields (87–98%) and environmentally friendly.

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Section: Resultsmentioning

confidence: 94%

Synthesis and characterization of nanocrystalline hydroxyapatite and its catalytic behavior towards synthesis of 3,4‐disubstituted isoxazole‐5(4H)‐ones in water

Maleki

Chahkandi

Tayebee

et al. 2019

Applied Organom Chemis

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“…These tablets can be made in advance and stored in a desiccator until needed without any deterioration, and the analytical operations are very simple and practical for use in the eld. Many approaches have been reported for the assay of OPs, such as magnetic solidphase extraction (MSPE), [36][37][38][39][40] solid-phase extraction (SPE), 35,36,41 and molecularly imprinted polymer solid-phase extraction (MIP-SPE). 42 The ERs (81.4-97.6%) obtained by this proposed method were comparable with other pretreatment methods and better than from solid-phase extraction combined with highperformance liquid chromatography-mass spectrometry (SPE-HPLC-MS) (65-126%) 31 and solid-phase extraction/magnetic solid-phase extraction combined with a high-performance liquid chromatography-diode array detector (SPE/MSPE-HPLC-DAD) (70-95%).…”

Section: Comparison Of the Ile-mspe/hplc-dad Methods With Previous Me...mentioning

confidence: 99%

Ionic-liquid-based effervescence-enhanced magnetic solid-phase extraction for organophosphorus pesticide detection in water samples

Gao

Zhang

et al. 2022

Anal. Methods

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“…Solid phase extraction (SPE) [14][15][16], solid phase microextraction (SPME) [17][18][19], liquid-liquid extraction (LLE) [20,21], dispersive micro-solid phase extraction (d -SPME) [22,23] magnetic solid-phase extraction [24,25], dispersive liquid-liquid microextraction (d -LLE) [26,27] and ultrasonic extraction (UE) [28] techniques have been widely used in sample preparation step prior to chromatographic pesticide detection. However, methods based on more selective sorbents with the suitable recovery and enrichment abilities need to be developed especially in complex sample matrices [29,30].…”

Section: Introductionmentioning

confidence: 99%

Sensitive and selective determination of imidacloprid with magnetic molecularly imprinted polymer by using LC/Q-TOF/MS

İlktaç¹,

Gümüş²

2021

Turk J Chem

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In this paper, magnetic-molecularly imprinted polymer was used for the preconcentration of trace levels of imidacloprid in water and apple samples prior to liquid chromatography-quadrupole-time-of-flight mass spectrometric determination. The selectivity of the magnetic polymer was united with the sensitivity and the high resolving power of the chromatographic system. The developed method showed a linear range from 10.0 to 500.0 µg/L .The quantitative recoveries were obtained for water and apple samples in the range of 92.0 -99.0 %. The relative standard deviations of intra-day and inter-day tests were found to be in the range of 0.8 -1.2 % and 1.2 -1.6 %, respectively. In addition, the same magnetic-molecularly imprinted polymer (MMIP) can be used at least ten cycles for the determination of imidacloprid.The preconcentration factor of the method was found to be 2.5 and the total preconcentration procedure can be completed in 1 hour. Characterization of synthesised particles were executed with various techniques. Due to its suitable limit of detection, dynamic linear range, sensitivity

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Extraction and preconcentration of organophosphorus pesticides from water samples and fruit juices utilizing hydroxyapatite/Fe3O4 nanocomposite

Cited by 48 publications

References 43 publications

Synthesis and characterization of nanocrystalline hydroxyapatite and its catalytic behavior towards synthesis of 3,4‐disubstituted isoxazole‐5(4H)‐ones in water

Synthesis and characterization of nanocrystalline hydroxyapatite and its catalytic behavior towards synthesis of 3,4‐disubstituted isoxazole‐5(4H)‐ones in water

Ionic-liquid-based effervescence-enhanced magnetic solid-phase extraction for organophosphorus pesticide detection in water samples

Sensitive and selective determination of imidacloprid with magnetic molecularly imprinted polymer by using LC/Q-TOF/MS

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