Analysis of flavors and fragrances by HPLC with Fe 3 O 4 @GO magnetic nanocomposite as the adsorbent

Xiao, Rui; Zhang, Xiaoting; Zhang, Xiaona; Niu, Jiahua; Lu, Minghua; Xiu-hua, Liu; Cai, Zongwei

doi:10.1016/j.talanta.2017.01.065

Cited by 89 publications

(32 citation statements)

References 44 publications

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“…Without remanence nor coercivity, this magnetic composite is proved to be superparamagnetic [38]. The saturation magnetization (M s ) of the composite is 12.8 emuÁg 21 lower than that of magnetic materials in the literature, where M s is about to be 16.3 [39], 16.12 [31], and 36 emuÁg 21 [40], respectively. At the same time, this composite shows a good magnetic separation ability as shown in the inserted photo.…”

Section: Formation Of Magnetic Go/chitosan Beadsmentioning

confidence: 99%

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Removal of cobalt ion from aqueous solution using magnetic graphene oxide/chitosan composite

Zhuang

Wang

2018

Env Prog and Sustain Energy

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The magnetic graphene oxide (GO)/chitosan composite was prepared, characterized, and applied for the removal of cobalt ions from aqueous solutions. One‐step coprecipitation method was used to synthesize magnetic GO/chitosan beads, which were characterized by VMS, FTIR, SEM, and EDX. The composites show a good porous structure and magnetic separation ability. The adsorption process is endothermic (ΔH0 = 12.08 kJ mol−1) and pH in the range of 5–9 has a slight effect on Co2+ adsorption. The adsorption kinetic data could be fitted with the pseudo‐second‐order model (R2 = 0.995) best, followed by the intraparticle diffusion (R2 = 0.950) and pseudo‐first‐order (R2 = 0.943) models. In addition, the Langmuir model (R2 = 0.995) was better at fitting the adsorption equilibrium data than that of the Freundlich (R2 = 0.814) and the Temkin (R2 = 0.806) models. The maximum adsorption capacity (qm) was calculated to be 15.24 mg·g−1 based on the weight of chitosan and GO by the Langmuir model. The magnetic GO/chitosan composite beads can be used for the removal of cobalt ions from aqueous solutions. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S32–S41, 2019

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Section: Formation Of Magnetic Go/chitosan Beadsmentioning

confidence: 99%

“…Alkali such as sodium hydroxide is quite common and necessary in the formation of chitosan-based gels, whereas it is also necessary for the formation of Fe 3 O 4 . Compared to chitosan gel, only the extra chemicals, Fe 31 and Fe 21 , are required for the formation of Fe 3 O 4 /chitosan.…”

Section: Introductionmentioning

confidence: 99%

Removal of cobalt ion from aqueous solution using magnetic graphene oxide/chitosan composite

Zhuang

Wang

2018

Env Prog and Sustain Energy

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“…Among them, the combination of intube SPME and HPLC makes a possibility of high-throughput Article Related Abbreviations: DAD, diode array detector; EFs, enrichment factors; FLD, fluorescence detector; MSPE, magnetic solid-phase extraction; PEEK, polyetheretherketone; r, correlation coefficients; UVD, ultraviolet detector. Various materials with porosity, high specific surface area, and good adsorption properties have been fabricated for the efficient coatings of in-tube SPME such as carbon-based materials [17][18][19], metal-organic frameworks [20], nanomaterials [21], ionic liquids [22], and porous organic polymers. The extraction coating plays a critical role in sensitivity, capability, and repeatability.…”

Section: Introductionmentioning

confidence: 99%

“…The extraction coating plays a critical role in sensitivity, capability, and repeatability. Various materials with porosity, high specific surface area, and good adsorption properties have been fabricated for the efficient coatings of in-tube SPME such as carbon-based materials [17][18][19], metal-organic frameworks [20], nanomaterials [21], ionic liquids [22], and porous organic polymers.…”

Section: Introductionmentioning

confidence: 99%

Triazine‐based organic polymers@SiO₂ nanospheres for sensitive solid‐phase microextraction of polycyclic aromatic hydrocarbons

Sun

et al. 2019

J of Separation Science

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Triazine-based organic polymers@SiO 2 nanospheres were prepared and applied as an extraction coating onto stainless steel wires and the wires were filled into polyetheretherketone tube for in-tube solid-phase microextraction. Taking polycyclic aromatic hydrocarbons as targets, main factors affecting extraction performance of the tube were investigated through coupling to high performance liquid chromatography. Under the optimum conditions, an online analytical method for polycyclic aromatic hydrocarbons was established with large linear ranges (0.010-20 µg/L), low limits of detection (0.003-0.010 µg/L), high enrichment factors (533-2954), and good repeatability (relative standard deviations <1.7% for intraday test, <5.0% for interday test). The analysis method was successfully applied to the detection of trace targets in real water samples and the relative recoveries ranged from 82.9 to 119.9%, which demonstrated the applicability of extraction tube in sample preparation. K E Y W O R D Shigh performance liquid chromatography, online analysis, polycyclic aromatic hydrocarbon, solid-phase microextraction, triazine-based organic polymers 622

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“…Among these pretreatment methods, the magnetic solid phase extraction (MSPE) has earned increasing attention for sample preparation. As a new generation of materials in pretreatment of samples, magnetic adsorbents can be easily collected by applying an external magnetic field to replace processes such as centrifugation in traditional dispersive SPE [10]. In MSPE, magnetic Fe 3 O 4 nanoparticles are the most commonly used because of their good biocompatibility, superparamagnetic property, low toxicity, and facile preparation [11].…”

Section: Introductionmentioning

confidence: 99%

Magnetic solid‐phase extraction of benzoylurea insecticides in tea samples with Fe₃O₄‐hyperbranched polyester magnetic composite as sorbent

Liu

Marriott

et al. 2019

J of Separation Science

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In this work, a method for the analysis of benzoylurea insecticides, including hexaflumuron, flufenoxuron, lufenuron and chlorfluazuron, in tea samples by highperformance liquid chromatography with Fe 3 O 4 -hyperbranched polyester nanocomposite as the adsorbent for magnetic solid-phase extraction was developed. The magnetic nanocomposite was prepared and characterized by infrared spectroscopy, vibrating sample magnetometry, and scanning electron microscopy. The as-prepared nanocomposite was used as a sorbent for the extraction and preconcentration of pesticide residues in tea samples. The extraction and desorption conditions, including mass ratios of raw materials, amount of sorbent, pH value, extraction time, and desorption time, were investigated. Under the final conditions chosen for the analysis, good linearity was obtained for all the tested compounds, with R 2 values of at least 0.9979. The limits of detection were determined in the range of 0.15-0.3 μg/L. The recovery obtained from the analysis of tea samples with various spiked concentrations was between 90.7 and 98.4%, with relative standard deviations (n = 4) lower than 4.1%. Furthermore, the present approach was successfully applied to the quantitative determination of residues of benzoylurea insecticides in real samples. K E Y W O R D Sbenzoylurea insecticides, high-performance liquid chromatography, hyperbranched polyester, magnetic solid-phase extraction, tea samples 1610

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Analysis of flavors and fragrances by HPLC with Fe 3 O 4 @GO magnetic nanocomposite as the adsorbent

Cited by 89 publications

References 44 publications

Removal of cobalt ion from aqueous solution using magnetic graphene oxide/chitosan composite

Removal of cobalt ion from aqueous solution using magnetic graphene oxide/chitosan composite

Triazine‐based organic polymers@SiO₂ nanospheres for sensitive solid‐phase microextraction of polycyclic aromatic hydrocarbons

Magnetic solid‐phase extraction of benzoylurea insecticides in tea samples with Fe₃O₄‐hyperbranched polyester magnetic composite as sorbent

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Analysis of flavors and fragrances by HPLC with Fe 3 O 4 @GO magnetic nanocomposite as the adsorbent

Cited by 89 publications

References 44 publications

Removal of cobalt ion from aqueous solution using magnetic graphene oxide/chitosan composite

Removal of cobalt ion from aqueous solution using magnetic graphene oxide/chitosan composite

Triazine‐based organic polymers@SiO2 nanospheres for sensitive solid‐phase microextraction of polycyclic aromatic hydrocarbons

Magnetic solid‐phase extraction of benzoylurea insecticides in tea samples with Fe3O4‐hyperbranched polyester magnetic composite as sorbent

Contact Info

Product

Resources

About

Triazine‐based organic polymers@SiO₂ nanospheres for sensitive solid‐phase microextraction of polycyclic aromatic hydrocarbons

Magnetic solid‐phase extraction of benzoylurea insecticides in tea samples with Fe₃O₄‐hyperbranched polyester magnetic composite as sorbent