Determination of trace bisphenol A in environmental water by high-performance liquid chromatography using magnetic reduced graphene oxide based solid-phase extraction coupled with dispersive liquid–liquid microextraction

Li, Danping; Ma, Xinbin; Wang, Rui; Yu, Yumian

doi:10.1007/s00216-016-0087-7

Cited by 66 publications

(20 citation statements)

References 34 publications

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“…Magnetic nanoparticles (MNPs), because of their attractive properties, have been applied for different applications such as separation (Bagheri, Khanipour, & Asgari, ; Chen, Ma, Huang, Peng, & Li, ; Li et al, ; Li, Ma, Wang, & Yu, ; Mehdinia, Roohi, & Jabbari, ), catalysis (Laska, Frost, Plucinski, & Price, ), bioscience (Cregg, Murphy, & Mardinoglu, ) and environmental remediation (Campos, Ferreira, Marinho, Tourinho, & Depeyrot, ). The MNPs possess significant advantages, including small size, high surface‐to‐volume ratio, high magnetic susceptibility and effective ability to bind.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of magnetic nanoparticle‐based molecularly imprinted polymer as a selective sorbent for efficient extraction of ezetimibe from biological samples

Peyrovi

Hadjmohammadi

Saeidi³

2018

Biomedical Chromatography

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In the present study, a novel and efficient adsorbent constructed of molecularly imprinted polymer on the surface of modified magnetic nanoparticles with oleic acid (MNPs) was applied for the selective extraction of ezetimibe. The magnetic molecularly imprinted polymer (MMIP) was polymerized at the surface of modified MNPs using methacrylic acid as functional monomer, ezetimibe as template and ethylene glycol dimethacrylate as cross-linker. The resulting MMIP showed high adsorption capacity, good selectivity and fast kinetic binding for the template molecule. It was characterized by Fourier transform infrared analysis, scanning electron microscopy and transmission electron microscopy methods. The maximum adsorption capacity of MMIP was obtained as 137.1 mg g −1 and it took about 20 min to achieve the equilibrium state. The adsorption model of the adsorbent was fitted with the Freundlich and Langmuir isotherm equations. The assay exhibited a linear range of 0.003-20.000 mg L −1 for ezetimibe with a correlation coefficient of 0.995. The relative standard deviations for the recoveries were <5.2. The method was also examined for the analysis of ezetimibe in the biological samples.

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Section: Introductionmentioning

confidence: 99%

Synthesis of magnetic nanoparticle‐based molecularly imprinted polymer as a selective sorbent for efficient extraction of ezetimibe from biological samples

Peyrovi

Hadjmohammadi

Saeidi³

2018

Biomedical Chromatography

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“…The MSPE technique was coupled with dispersive liquid-liquid microextraction (DLLME) in order to utilize the benefits of both sample preparation techniques. The magnetic sorbent was separated conveniently and rapidly from the sample matrix and it was found to be reusable for at least 12 repeated cycles [69].…”

Section: Nanocomposites Of Reduced Go With Fe 3 O 4 Nanoparticlesmentioning

confidence: 99%

Magnetic Solid-Phase Extraction of Organic Compounds Based on Graphene Oxide Nanocomposites

et al. 2020

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Graphene oxide (GO) is a chemical compound with a form similar to graphene that consists of one-atom-thick two-dimensional layers of sp2-bonded carbon. Graphene oxide exhibits high hydrophilicity and dispersibility. Thus, it is difficult to be separated from aqueous solutions. Therefore, functionalization with magnetic nanoparticles is performed in order to prepare a magnetic GO nanocomposite that combines the sufficient adsorption capacity of graphene oxide and the convenience of magnetic separation. Moreover, the magnetic material can be further functionalized with different groups to prevent aggregation and extends its potential application. Until today, a plethora of magnetic GO hybrid materials have been synthesized and successfully employed for the magnetic solid-phase extraction of organic compounds from environmental, agricultural, biological, and food samples. The developed GO nanocomposites exhibit satisfactory stability in aqueous solutions, as well as sufficient surface area. Thus, they are considered as an alternative to conventional sorbents by enriching the analytical toolbox for the analysis of trace organic compounds.

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“…[29][30][31][32][33] After target compound adsorption, the magnetic sorbent can be easily isolated from matrix solutions by applying an external magnetic field, without the need for centrifugation or filtration. [34][35][36][37] A MMIP was synthesized by suspension polymerization for selective recognition of dibenzothiophene in gasoline samples. 38 MMIP beads were prepared by suspension polymerization, and were used for the adsorption of 2,4,6-trichlorophenol from an aqueous solution in a fixed-bed column.…”

Section: Introductionmentioning

confidence: 99%

Preparation of magnetic molecularly imprinted polymers for the rapid detection of diethylstilbestrol in milk samples

Huang

Zhao

2019

J Sci Food Agric

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BACKGROUND: Diethylstilbestrol (DES) residues are harmful to human health because of their potential carcinogenic properties. Therefore, it is important to develop a fast and efficient pretreatment method to prevent their harmful effects on human health and the environment. RESULTS: In this paper, two types of magnetic molecularly imprinted polymers (MMIPs) of DES were prepared by bulk polymerization and the sol-gel method, respectively. The synthetic materials were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. Adsorption capacities of the bulk and sol-gel MMIPs were investigated. A rapid detection method was developed using the two types of MMIPs as sorbents, coupled to high-performance liquid chromatography, for the determination of DES residues in milk samples. Under optimized conditions, the limit of detection (S/N = 3) of both methods for DES was 2.0 g L −1 ; and the linear response range to DES was 0.1-500 mg L −1 . The milk samples were analyzed according to this method with good recoveries of 88.3-97.6 and 90.5-103.5% for the two types of MMIPs, respectively. CONCLUSIONS: The method described had high sensitivity and high selectivity, and could prove to be a new method for the rapid determination of DES residues in milk samples.where C 0 (μg mL −1 ) is the initial concentration of DES in acetonitrile solution, C (μg mL −1 ) is the equilibrium concentration of DES in acetonitrile solution, V (mL) is the volume of solution and W is the mass of MMIPs/MNIPs (g).J Sci Food Agric 2019; 99: 4452-4459Adsorption kinetics experiments Figure 6 shows the adsorption isotherms of MMIPs and MNIPs for DES prepared by bulk polymerization and the sol-gel method. The adsorption capacity of bulk and sol-gel MMIPs for DES increased J Sci Food Agric 2019; 99: 4452-4459

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Determination of trace bisphenol A in environmental water by high-performance liquid chromatography using magnetic reduced graphene oxide based solid-phase extraction coupled with dispersive liquid–liquid microextraction

Cited by 66 publications

References 34 publications

Synthesis of magnetic nanoparticle‐based molecularly imprinted polymer as a selective sorbent for efficient extraction of ezetimibe from biological samples

Synthesis of magnetic nanoparticle‐based molecularly imprinted polymer as a selective sorbent for efficient extraction of ezetimibe from biological samples

Magnetic Solid-Phase Extraction of Organic Compounds Based on Graphene Oxide Nanocomposites

Preparation of magnetic molecularly imprinted polymers for the rapid detection of diethylstilbestrol in milk samples

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