Magnetic nanoparticles coated with ionic liquid for the extraction of endocrine disrupting compounds from waters

Casado-Carmona, Francisco Antonio; Alcudia-León, María del Carmen; Lucena, Rafael; Valcárcel, Miguel

doi:10.1016/j.microc.2016.05.011

Cited by 61 publications

(20 citation statements)

References 31 publications

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“…The synthesis and functionalization of MNPs was carried out in four steps. First, Fe 3 O 4 NPs were obtained by a coprecipitation method similar to that previously described [14], and then 24 g of FeCl 3 ·6H 2 O and 9.8 g of FeCl 2 ·4H 2 O were dissolved in 100 mL of Milli-Q water under nitrogen stream. The solution was stirred for 30 min at 80 • C and then 50 mL of 25 wt% ammonia were added dropwise.…”

Section: Synthesis Of Go-functionalized Magnetic Nanoparticlesmentioning

confidence: 99%

“…The combination of MNPs with other nanomaterials as well as micrometric systems has increased the potential of this nanomaterial for microextraction. In this sense, MNPs have been combined with micrometric polymers [12,13] or ionic liquids [14], exploiting the extraction capabilities of the polymeric network or ionic liquid at the same time that the magnetic behavior simplifies the overall procedure. Hybrids of cobalt ferrite MNPs coated with oleic acid [15] as well as MNPs with graphitized carbon black [16] have been employed for the determination of UV filters.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Graphene Oxide Composite for the Microextraction and Determination of Benzophenones in Water Samples

et al. 2020

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Magnetite nanoparticles (Fe3O4) functionalized with graphene oxide (GO) have been synthesized through a silanization process of the magnetic nanoparticles with tetraethyl orthosilicate and (3-aminopropyl)triethoxysilane and further coupling of GO. The synthesized nanomaterials have been characterized by several techniques, such as transmission electron microscopy (TEM), and infrared and Raman spectroscopy, which enabled the evaluation of the different steps of the functionalization process. The hybrid nanomaterial has been employed for the extraction of five benzophenones (benzophenone-1, benzophenone-3, 4-hydroxybenzophenone, benzophenone-6 and benzophenone-8) in aqueous samples by dispersive micro-solid phase extraction, combining the magnetic properties of magnetite nanoparticles with the excellent sorption capacity of graphene oxide via hydrophobic interactions with the analytes. The subsequent separation and quantification of the analytes was performed by liquid chromatography with tandem mass spectrometric detection, achieving limits of detection (LODs) in the range 2.5 to 8.2 μg·L−1, with relative standard deviations ranging from 1.3–9.8% and relative recovering in the range 86 to 105%. Positive swimming pool water samples analysed following the developed method revealed the presence of benzophenones in from 14.3 to 39 μg·L−1.

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Section: Synthesis Of Go-functionalized Magnetic Nanoparticlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic Graphene Oxide Composite for the Microextraction and Determination of Benzophenones in Water Samples

et al. 2020

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“…Fe 3 O 4 /SiO 2 microspheres were prepared using the document [29] with a minor modification. Typically, Fe 3 O 4 microspheres (250 mg) were dispersed in a three-necked beaker with ethanol (40 mL) and ultra-pure water (4 mL) as sonicated for 20 min, then concentrated ammonia aqueous solution (5 mL) and TEOS (2 mL) were added slowly into the above solution, respectively.…”

Section: Preparation Of Fe 3 O 4 /Sio 2 Microspheresmentioning

confidence: 99%

“…However, pure Fe 3 O 4 microspheres are easily oxidized and their magnetic properties can be altered in complex environmental systems [27,28]. To address this issue, silica based on the reliable chemical stability, biocompatibility and versatility is usually coated on the surface of Fe 3 O 4 microspheres to form coreshell magnetic materials [29].…”

Section: Introductionmentioning

confidence: 99%

Cetylpyridinium chloride functionalized silica‐coated magnetite microspheres for the solid‐phase extraction and pre‐concentration of ochratoxin A from environmental water samples with high‐performance liquid chromatographic analysis

Huang

Suo

et al. 2017

J of Separation Science

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A new method based on cetylpyridinium chloride coated ferroferric oxide/silica magnetic microspheres as an efficient solid-phase adsorbent was developed for the extraction and enrichment of ochratoxin A. The determination of ochratoxin A was obtained by high-performance liquid chromatography with fluorescence detection. In the presence of cetylpyridinium chloride, the adsorption capacity of ferroferric oxide/silica microspheres was 5.95 mg/g for ochratoxin A. The experimental parameters were optimized, including the amounts of ferroferric oxide/silica microspheres (20 mg) and cetylpyridinium chloride (0.18 mL, 0.5 mg/mL), pH value of media (9), ultrasonic time (5 min), elution solvent and volume [2(1 + 1) mL (washed twice, 1 mL each time) 1% acetic acid acetonitrile]. Under optimal experiment conditions, ochratoxin A had good linearity in the range of 2.5-250.0 ng/L in water samples with correlation coefficient of the calibration curve 0.9995. The limit of detection for ochratoxin A was 0.83 ng/L, and the recoveries were 89.8-96.8% with the relative standard deviation of 1.5-3.5% in environmental water samples. Furthermore, ferroferric oxide/silica microspheres show excellent reusability during extraction procedures for no less than six times.

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“…PBs have been determined in environmental water samples by LC‐UV and UHPLC coupled with UV [7,9–12], in addition to GC‐FID [7]. However, the most commonly used techniques are LC–MS/MS [7,13–16] and GC–MS or GC–MS/MS [17–20]. These compounds have been extracted from water samples by using SPE or micro‐SPE, SPME, dispersive liquid‐liquid microextraction, magnetic SPE, dispersive magnetic SPE, stir bar sorptive extraction, molecular imprinted polymers, and dispersive miniaturized SPE, among other microextraction techniques [7,10,12–18,21–24].…”

Section: Introductionmentioning

confidence: 99%

Determination of personal care products in water using UHPLC–MS after solid phase extraction with mesoporous silica‐based MCM‐41 functionalized with cyanopropyl groups

Kharbouche

García

Lozano

et al. 2020

J of Separation Science

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A silica-based MCM-41 mesoporous material functionalized with cyanopropyl groups has been synthesized by cocondensation, characterized and applied to preconcentrate six parabens and three UV filters in river and swimming-pool waters. The analytes were quantified by ultra-high performance liquid chromatography-tandem mass spectrometry, according to the Directive 96/23/EC. Even though matrix effect was negligible, quantification in river water samples with the standard addition approach improved the recoveries obtained using solvent-based and even with matrixmatched calibration. The method quantification limits in river water samples were 0.05 ng/mL for 2,4-dihydroxybenzophenone and 0.01 ng/mL for the rest. Recoveries, evaluated for a concentration level of 0.5 ng/L, were in the range 93.5-107.6% for parabens and in the range 64.2-85.8% for UV filters, with relative standard deviations intraday ≤10.2 and 10.8%, respectively. This parameter, evaluated for a concentration level of 0.1 ng/L, ranged between 98.3 and 110.4% for parabens and between 61.9 and 89.9% for UV filters, with relative standard deviation intraday ≤15.3 and 15.5%, respectively. The two UV filters with lower recoveries were the most affected by the addition of sodium chloride. River and swimming pool waters were analyzed and all the personal care products were found in the swimming pool water, whereas only methylparaben was detected in the river water. K E Y W O R D Sfunctionalized MCM-

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Magnetic nanoparticles coated with ionic liquid for the extraction of endocrine disrupting compounds from waters

Cited by 61 publications

References 31 publications

Magnetic Graphene Oxide Composite for the Microextraction and Determination of Benzophenones in Water Samples

Magnetic Graphene Oxide Composite for the Microextraction and Determination of Benzophenones in Water Samples

Cetylpyridinium chloride functionalized silica‐coated magnetite microspheres for the solid‐phase extraction and pre‐concentration of ochratoxin A from environmental water samples with high‐performance liquid chromatographic analysis

Determination of personal care products in water using UHPLC–MS after solid phase extraction with mesoporous silica‐based MCM‐41 functionalized with cyanopropyl groups

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