Magnetically assisted matrix solid phase dispersion for extraction of parabens from breast milks

Fotouhi, Mina; Seidi, Shahram; Shanehsaz, Maryam; Naseri, Mahmood

doi:10.1016/j.chroma.2017.05.009

Cited by 58 publications

(28 citation statements)

References 35 publications

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“…The content of THF in the bulk solution influences SUPRASs composition and structure and, consequently, it could affect extraction efficiency [25]. SUPRASs were prepared from a constant concentration of 1-decanol (2.4%, v/v) and varying percentages of THF (10,15,20, and 25%, v/v). Here, the total volume of the bulk solution, which the extraction device was able to take up, was considered to be 5 mL.…”

Section: Selection Of Supras-me Conditionsmentioning

confidence: 99%

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Miniaturized matrix solid‐phase dispersion coupled with supramolecular solvent‐based microextraction for the determination of paraben preservatives in cream samples

Yıldız

Çabuk

2018

J of Separation Science

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An analytical method is presented for the determination of paraben preservatives in semisolid cream samples by matrix solid-phase dispersion combined with supramolecular solvent-based microextraction. Due to the oily and sticky nature of the sample matrix, parabens were first extracted from the samples by matrix solid-phase dispersion using silica as sorbent material with a clean-up performed with tetrahydrofuran in the elution step. The eluate (500 μL), 1-decanol (120 μL), and water (4.4 mL) were then mixed in a polyethylene pipette to form supramolecular solvent. Finally, the analytes in the supramolecular solvent were separated and determined by liquid chromatography with ultraviolet detection. Under optimal extraction conditions, the extraction recoveries of the studied compounds were obtained in the range of 63-83%. The limits of detection for the analytes were between 0.03 and 0.04 μg/g. The precision of the method varied between 4.0-6.7 (intraday) and 6.2-7.9% (interday). Finally, the optimized procedure was applied to the determination of the target preservatives in a variety of cream samples (diaper rash, skin allergy, face and hand moisturizing) with satisfactory recoveries (86-102%).

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Section: Selection Of Supras-me Conditionsmentioning

confidence: 99%

“…A variety of analytical methods for determining parabens in both solid and liquid samples have been reported to date by LC [4][5][6][7][8][9][10], GC [11][12][13][14][15], and CE [16,17]. LC techniques are more commonly used for parabens since GC methods usually require a prior derivatization of the compounds [5].…”

Section: Introductionmentioning

confidence: 99%

Miniaturized matrix solid‐phase dispersion coupled with supramolecular solvent‐based microextraction for the determination of paraben preservatives in cream samples

Yıldız

Çabuk

2018

J of Separation Science

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“…A study from Turkey 30 detected parabens in milk samples in a concentration range from 300 to 6000 ng mL -1 . In Iran, 36,40 parabens levels were determined in a range from 0.792 to 1.180 ng mL -1 and 51.2 to 3270.3 ng mL -1 , respectively. Fisher et al 41 determined parabens levels in milk samples in a range from 0.0023 to 16.325 ng mL -1 .…”

Section: Concentration Of Parabens In Breast Milk Samples From Voluntmentioning

confidence: 99%

Determination of Parabens in Breast Milk Samples by Dispersive Liquid-Liquid Microextraction (DLLME) and Ultra-High-Performance Liquid Chromatography Tandem Mass Spectrometry

Grecco¹,

Souza²,

Acquaro³

et al. 2018

J. Braz. Chem. Soc.

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A reliable method was developed and validated based on dispersive liquid-liquid microextraction (DLLME) and ultra-high-performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) to determine simultaneously methylparaben (MePB), ethylparaben (EtPB), propylparaben (PrPB), and butylparaben (BuPB) in breast milk samples. A central composite design 2 4 with four independent variables and five levels of variance was used to optimize the DLLME conditions. The DLLME/UHPLC-MS/MS method was linear from 5 (lower limit of quantification, LLOQ) to 100 ng mL -1 (upper limit of quantification, ULOQ). The inter-assay and intra-assay precision values presented coefficients of variation (CVs) lower than 15%, and the relative standard error of the inter-and intra-assay accuracy values was lower than 10.4%. The DLLME/UHPLC-MS/MS method was successfully applied to determine parabens in human milk samples obtained from sixteen volunteer lactating mothers.

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“…Fotouhi et al [55] applied magnetically assisted matrix solid-phase dispersion (MA-MSPD) to extract and determine by LC-UV and LC-MS/MS residues of parabens in breast milk. A new material was prepared reacting Fe ions and GO in aqueous media with subsequent copolymerization of indolethiophene on GO (Fe 3 O 4 -GO) to bring up magnetic characteristic to the sorbent phase, termed magnetic graphene oxide bounded with indole-thiophene polymer.…”

Section: Other Applicationsmentioning

confidence: 99%

The role of graphene‐based sorbents in modern sample preparation techniques

Toffoli

Maciel

Fumes

et al. 2017

J of Separation Science

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The application of graphene-based sorbents in sample preparation techniques has increased significantly since 2011. These materials have good physicochemical properties to be used as sorbent and have shown excellent results in different sample preparation techniques. Graphene and its precursor graphene oxide have been considered to be good candidates to improve the extraction and concentration of different classes of target compounds (e.g., parabens, polycyclic aromatic hydrocarbon, pyrethroids, triazines, and so on) present in complex matrices. Its applications have been employed during the analysis of different matrices (e.g., environmental, biological and food). In this review, we highlight the most important characteristics of graphene-based material, their properties, synthesis routes, and the most important applications in both off-line and on-line sample preparation techniques. The discussion of the offline approaches includes methods derived from conventional solid-phase extraction focusing on the miniaturized magnetic and dispersive modes. The modes of microextraction techniques called stir bar sorptive extraction, solid phase microextraction, and microextraction by packed sorbent are discussed. The on-line approaches focus on the use of graphene-based material mainly in on-line solid phase extraction, its variation called in-tube solid-phase microextraction, and on-line microdialysis systems.

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Magnetically assisted matrix solid phase dispersion for extraction of parabens from breast milks

Cited by 58 publications

References 35 publications

Miniaturized matrix solid‐phase dispersion coupled with supramolecular solvent‐based microextraction for the determination of paraben preservatives in cream samples

Miniaturized matrix solid‐phase dispersion coupled with supramolecular solvent‐based microextraction for the determination of paraben preservatives in cream samples

Determination of Parabens in Breast Milk Samples by Dispersive Liquid-Liquid Microextraction (DLLME) and Ultra-High-Performance Liquid Chromatography Tandem Mass Spectrometry

The role of graphene‐based sorbents in modern sample preparation techniques

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