A high throughput approach to rotating-disk sorptive extraction (RDSE) using laminar cork for the simultaneous determination of multiclass organic micro-pollutants in aqueous sample by GC-MS

Vieira, Camila M.S.; Mafra, Gabriela; Brognoli, Rafael; Richter, Pablo; Rosero-Moreano, Milton; Carasek, Eduardo

doi:10.1016/j.talanta.2019.120459

Cited by 25 publications

(9 citation statements)

References 28 publications

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“…The rotation speed of the disk was kept at the maximum speed reached by the magnetic stirrer, because under this condition the boundary layer formed on the surface of the sorption phase decreases and the mass transfer of analyte is faster 21,12,13,21 . Ultimately, the rotational speed of the disk was kept constant at 2200 rpm.…”

Section: Optimization Of Variablesmentioning

confidence: 99%

“…In this work, in order to achieve efficient extraction and using the minimum amount of solvent in the preconcentration stage, a new methodology will be proposed based on rotating disk sorptive extraction (RDSE). RDSE has been widely used for the determination of different pollutants 12,13 . The format of the device that includes a cavity in the disk provides high versatility for methodologies based on this method.…”

Section: Introductionmentioning

confidence: 99%

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First- Derivative Spectrofluorimetric Determination of Enrofloxacin and Ciprofloxacin in Cow Milk Using Rotating Sorptive Extraction

Pino

Richter

et al. 2021

J. Chil. Chem. Soc.

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A derivative spectrofluorimetric method for simultaneous determination of enrofloxacin (EFX) and ciprofloxacin (CFX) in cow milk was developed. The sample preparation was based on rotating disk sorptive extraction (RDSE) using Oasis HLB® as extraction phase and followed by desorption of the analytes with methanol. The final extracts were evaluated by derivative spectrofluorimetry. An analyte-free cow milk was used as blank sample which was spiked with a known amount of analytes for the study of variables. The sample was treated with trichloroacetic acid in order to precipitate proteins. Furthermore, the extraction was carried out in the presence of Mc Ilvaine-EDTA 0.3M buffer to avoid any type of interference from the calcium ion. The variables involved in the RDSE process were pH and extraction time. Spectral variables were also optimized and analytical signals were evaluated at 417nm and 438nm for EFX and CFX, respectively. The limit of detection (LOD) and limit of quantification (LOQ) were 2.98-9.04 µg • L-1 and 2.56-7.75 µg • L-1 , for EFX and CFX respectively. The precision levels, expressed as relative standard deviation, for EFX and CFX were 3.2% and 3.0%, respectively. The recoveries were between 98.8% to 100.5%. Commercial milks were analyzed and both antibiotics shown concentrations below to LOD in the batches analyzed. Finally, the proposed method offers advantages in terms of simplicity, efficiency and cost. Besides being friendly with the environment.

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Section: Optimization Of Variablesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

First- Derivative Spectrofluorimetric Determination of Enrofloxacin and Ciprofloxacin in Cow Milk Using Rotating Sorptive Extraction

Pino

Richter

et al. 2021

J. Chil. Chem. Soc.

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“…Regarding the recent publications, raw cork-based approaches have been highlighted in microextraction methodologies whereas they exhibit some unique analytical features that allow for "green", sustainable, and efficient procedures that are relevant to the current environmental concerns [30][31][32][33][34][35][36][37][38]. Table 1 points out the analytical features of the recent applications using raw cork-based methodologies for the extraction of different analytes from various matrices.…”

Section: Introductionmentioning

confidence: 99%

“…Cork exhibits significant hydrophobicity and a number of aromatic rings that can undergo effective π-π interactions with the analytes and substantially enhance the preconcentration ability of the extraction procedures. The last cork-based applications have been focused on improving the mass transfer using laminar cork for rotating disk sorptive extraction (RDSE) methodologies, demonstrating an interesting new configuration for high-throughput procedures [37,38].…”

Section: Introductionmentioning

confidence: 99%

“…The advances in cork-based techniques have led to remarkable improvements with regard to environmentally friendly aspects, in particular because cork harnessed as biosorbent is originated from cork stoppers that would be discarded and are reused for the development of several analytical methodologies. Moreover, the strategy of combining this cheap and natural biosorbent with high-throughput strategies [33,38] that are able to perform fast and efficient extractions are promising trends that should be further investigated.…”

Section: Introductionmentioning

confidence: 99%

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Returning to Nature for the Design of Sorptive Phases in Solid-Phase Microextraction

et al. 2019

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Green analytical chemistry principles aim to minimize the negative impact of analytical procedures in the environment, which can be considered both at close (to ensure the safety of the analysts) and global (to conserve our natural resources) levels. These principles suggest, among other guidelines, the reduction/minimization of the sample treatment and the use of renewable sources when possible. The first aspect is largely fulfilled by microextraction, which is considered to be among the greenest sample treatment techniques. The second consideration is attainable if natural products are used as raw materials for the preparation of new extraction phases. This strategy is in line with the change in our production system, which is being gradually moved from a linear model (take-make-dispose) to a circular one (including reusing and recycling as key terms). This article reviews the potential of natural products as sorbents in extraction and microextraction techniques from the synergic perspectives of two research groups working on the topic. The article covers the use of unmodified natural materials and the modified ones (although the latter has a less green character) to draw a general picture of the usefulness of the materials.Separations 2020, 7, 2 2 of 22 principle identifies one of the trends of current research in analytical sciences, it is difficult to be applied when complex samples containing the analytes at very low concentrations are processed. In such scenarios, the simplification of the sample treatment and the reduction of the sources applied (reagents, energy) can be a more practical objective, at least currently. Microextraction techniques fulfill the latter criteria [8], and they are considered among the greenest sample treatment techniques [9].Microextraction techniques have evolved in the last decade following some key trends. Among them, the development of new extraction phases can be highlighted, considering the context of this review article. In this evolution, the tenth (use of renewable resources) and eleventh (replace or remove toxic reagents) principles of GAC are especially relevant [7]. In the liquid microextraction context, environmentally friendly solvents [10,11] such as CyreneTM [12] and deep eutectic solvents [13] are clear examples of this progress.The paradigm of our production system, which up to now has been based on a linear "take-make-dispose" model, is progressively changed to a circular model [14] where reusing, repairing, refurbishing, and recycling appear as key terms. The use of surpluses of natural products as raw materials for the preparation of new sorbents is an interesting contribution of analytical chemistry for changing the production model. This review article, which combines the vision of two research groups working in the topic, tries to draw the general picture of the potential of natural products for the synthesis of new sorptive phases in solid phase extraction and solid phase microextraction. The article will cover strategies with different green characterist...

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Analytical Methods for Environmental Contaminants of Emerging Concern

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A high throughput approach to rotating-disk sorptive extraction (RDSE) using laminar cork for the simultaneous determination of multiclass organic micro-pollutants in aqueous sample by GC-MS

Cited by 25 publications

References 28 publications

First- Derivative Spectrofluorimetric Determination of Enrofloxacin and Ciprofloxacin in Cow Milk Using Rotating Sorptive Extraction

First- Derivative Spectrofluorimetric Determination of Enrofloxacin and Ciprofloxacin in Cow Milk Using Rotating Sorptive Extraction

Returning to Nature for the Design of Sorptive Phases in Solid-Phase Microextraction

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