Nanostructured alkyl carboxylic acid-based restricted access solvents: Application to the combined microextraction and cleanup of polycyclic aromatic hydrocarbons in mosses

Caballero-Casero, Noelia; Çabuk, Hasan; Martínez-Sagarra, Gloria; Alcaraz, Juan Antonio Devesa; Rubio, Soledad

doi:10.1016/j.aca.2015.06.060

Cited by 30 publications

(8 citation statements)

References 27 publications

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“…This characteristic is due to the presence of supramolecular aggregates, promoting a solvent with different degrees of polarity [77][78][79]. Supramolecular solvents have already been used in the determination of several classes of compounds such as parabens, pesticides, polycyclic aromatic hydrocarbons and bisphenols [80][81][82][83].…”

Section: Supramolecular Solvent (Supras) As Extraction Phasementioning

confidence: 99%

Alternative Green Extraction Phases Applied to Microextraction Techniques for Organic Compound Determination

et al. 2019

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The use of green extraction phases has gained much attention in different fields of study, including in sample preparation for the determination of organic compounds by chromatography techniques. Green extraction phases are considered as an alternative to conventional phases due to several advantages such as non-toxicity, biodegradability, low cost and ease of preparation. In addition, the use of greener extraction phases reinforces the environmentally-friendly features of microextraction techniques. Thus, this work presents a review about new materials that have been used in extraction phases applied to liquid and sorbent-based microextractions of organic compounds in different matrices.

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Section: Supramolecular Solvent (Supras) As Extraction Phasementioning

confidence: 99%

Alternative Green Extraction Phases Applied to Microextraction Techniques for Organic Compound Determination

et al. 2019

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“…The SUPRAS consisted of aqueous cavities surrounded by the hydroxyl groups with the hydrocarbon chains dissolved in THF. The composition of the SUPRAS and the size of the reverse micelle aperture were controlled by the self-assembly environment of the amphiphilic molecules, especially the ratio of THF to water in the bulk solution [26].…”

Section: Supramolecular Solvent-based Microextractionmentioning

confidence: 99%

Determination of benzo[a]pyrene in edible oils using phase‐transfer‐catalyst‐assisted saponification and supramolecular solvent microextraction coupled to HPLC with fluorescence detection

Wang

Liu

Shi

et al. 2016

J of Separation Science

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For the analysis of edible oils, saponification is well known as a useful method for eliminating oil matrices. The conventional approach is conducted with alcoholic alkali; it consumes a large volume of organic solvents and impedes the retrieval of analytes by microextraction. In this study, a low-organic-solvent-consuming method has been developed for the analysis of benzo[a]pyrene in edible oils by high-performance liquid chromatography with fluorescence detection. Sample treatment involves aqueous alkaline saponification, assisted by a phase-transfer catalyst, and selective in situ extraction of the analyte with a supramolecular solvent. Comparison of the chromatograms of the oil extracts obtained by different microextraction methods showed that the supramolecular solvent has a better clean-up effect for the unsaponifiable matter from oil matrices. The method offered excellent linearity over a range of 0.03- 5.0 ng mL (r > 0.999). Recovery rates varied from 94 to 102% (RSDs <5.0%). The detection limit and quantification limit were 0.06 and 0.19 μg kg , respectively. The proposed method was applied for the analysis of 52 edible oils collected online in China; the analyte contents of 23 tested oil samples exceeded the maximum limit of 2 μg kg for benzo[a]pyrene set by the Commission Regulation of the European Union.

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“…The size of the coacervate droplets and the aqueous cavities in the hexagonal structure are THF dependent providing these solvents restricted access properties. These solvents can therefore extract low molecular weight analytes while excluding macromolecules (e.g., proteins, phospholipids, and polysaccharides) through chemical and physical mechanisms . High extraction efficiency for a wide polarity range of analytes is expected arising from the multiple binding sites and different polarity regions present in the nanostructures .…”

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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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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Nanostructured alkyl carboxylic acid-based restricted access solvents: Application to the combined microextraction and cleanup of polycyclic aromatic hydrocarbons in mosses

Cited by 30 publications

References 27 publications

Alternative Green Extraction Phases Applied to Microextraction Techniques for Organic Compound Determination

Alternative Green Extraction Phases Applied to Microextraction Techniques for Organic Compound Determination

Determination of benzo[a]pyrene in edible oils using phase‐transfer‐catalyst‐assisted saponification and supramolecular solvent microextraction coupled to HPLC with fluorescence detection

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

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