Solid-phase microextraction using octadecyl-bonded silica immobilized on the surface of a rotating disk: Determination of hexachlorobenzene in water

Cañas, Alejandro; Richter, Pablo

doi:10.1016/j.aca.2012.07.019

Cited by 34 publications

(10 citation statements)

References 13 publications

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“…Regarding this variable, an extraction time of 30 min was sufficient to reach the partition equilibrium for sample volumes of 20 mL. Compared with the extraction of more polar analytes [13][14][15][16][17][18] , the equilibrium time for PAHs is reached faster, because these analytes have an enhanced affinity with PDMS, facilitating their extraction. This equilibrium time was also significantly lower than in previous studies using SBSE 3,4 because the surface area to phase volume ratio and the stagnant layer surface are improved under the RDSE configuration.…”

Section: Influence Of Extraction Timementioning

confidence: 99%

“…In this case, some representative PAHs were selected having low, medium and high molecular weight. The study was performed up to 3000 rpm, taking into account that the disk can be stirred at higher velocities without damaging the phase [13][14][15][16][17][18] . It can be observed that by increasing the rotational velocity the extraction efficiency of PAHs increased to reach a constant value at approximately 1250 rpm.…”

Section: Influence Of the Rotational Velocity Of The Disk On Analyte mentioning

confidence: 99%

“…In the case of the device used in SBSE, the friction of the phase with the bottom of the vessel containing the sample decreases its durability 13 . Also the RDSE can reduce solvent usage in sample preparation steps and the disk configuration is very easy to make in the laboratory [13][14][15][16][17][18] . The aim of this study was to develop a method for PAHs determination from aqueous matrices.…”

Section: Introductionmentioning

confidence: 99%

“…In our laboratory we have recently developed the technology of rotating disk sorptive extraction (RDSE), an alternative microextraction technique similar to SPME and SBSE 13 . The rotating disk extractor has the advantage of providing a greater volume of polydimethylsiloxane (PDMS) than in SPME, while also having a larger PDMS surface area than that provided by the device used in SBSE [13][14][15][16][17][18] . On the other hand, the disk can be rotated at high velocity without risk of damaging the PDMS phase, because it is only in contact with the solution, which facilitates more efficient analyte mass transfer and faster extraction 19 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Extraction of Polycyclic Aromatic Hydrocarbons From Water Samples Into a Rotating-Disk Microextractor and the Subsequent Determination by Gas Chromatography-Mass Spectrometry

Corrotea

Sánchez

Rubio

et al. 2014

J. Chil. Chem. Soc.

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The rotating disk sorptive extraction (RDSE) technique was applied in this study to the extraction of 16 polycyclic aromatic hydrocarbons (PAHs) in real water samples. The sorptive and desorptive behavior of the analytes were studied by using a rotating disk coated with polydimethylsiloxane (PDMS) on one of its surfaces. The optimal conditions for extractions of all analytes were: rotational velocity of the disk: 1250 rpm; sample volume: 20 mL; matrix modifier: 20 % MeOH and extraction time: 30 min. A desorption time of 10 min at 1250 rpm was used for the analytes using 5 mL of methanol. PAHs were measured in the extract by gas chromatography coupled to mass spectrometry (GC-MS). Under these conditions, recoveries ranging from 84 to 100 % were obtained in drinking water enriched with the analytes, and the precision, expressed as relative standard deviation, was between 2 and 20%. The detection limit of the method was between 8 and 115 ng L -1 depending on the analyte. The method was applied to the analysis of water samples obtained from a lagoon in Curauma, Chile, obtaining quantitative recoveries.

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Section: Influence Of Extraction Timementioning

confidence: 99%

Section: Influence Of the Rotational Velocity Of The Disk On Analyte mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Extraction of Polycyclic Aromatic Hydrocarbons From Water Samples Into a Rotating-Disk Microextractor and the Subsequent Determination by Gas Chromatography-Mass Spectrometry

Corrotea

Sánchez

Rubio

et al. 2014

J. Chil. Chem. Soc.

Self Cite

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“…The development of new phases in RSDE will increase the versatility of the technique, opening the door to the extraction of analytes of intermediate or high polarity. The first approach is this context involved the use of conventional C18 solid phase extraction (SPE) disks for the extraction of hexachlorobenzene from water [62]. These SPE disks, which are membranes with embedded particles, are linked to the device using silicone as a binder.…”

Section: Stir Disk Extractionsmentioning

confidence: 99%

Recent Advances in Extraction and Stirring Integrated Techniques

Cárdenas

Lucena

2017

Separations

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Abstract:The extraction yield of a microextraction technique depends on thermodynamic and kinetics factors. Both of these factors have been the focus of intensive research in the last few years. The extraction yield can be increased by synthesizing and using novel materials with favorable distribution constants (one of the thermodynamic factors) for target analytes. The extraction yield can also be increased by improving kinetic factors, for example, by developing new extraction modes. Microextraction techniques are usually non-exhaustive processes that work under the kinetic range. In such conditions, the improvement of the extraction kinetics necessarily improves the performance. Since the extraction yield and efficiency is related to how fast the analytes diffuse in samples, it is crucial to stir the sample during extraction. The stirring can be done with an external element or can be integrated with the extraction element in the same device. This article reviews the main recent advances in the so-called extraction/stirring integrated techniques with emphasis on their potential and promising approaches rather than in their applications.

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Sample Preparation Strategies for Analytical Determinations

Torrijos¹,

Mariño²,

Montes³

et al. 2019

Encyclopedia of Analytical Chemistry

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Sample preparation techniques have experienced an explosive development during the past decades. Procedural approaches that use minimal sample amounts reducing to the limit and sometimes eliminating completely the use of toxic and/or environmentally unfriendly solvents and reagents have emerged as standard in the analytical laboratory. At the same time, significant improvements in sensitivity and selectivity have appeared. This article revised the principal developments of sample preparation methods for analytical determinations as produced recently. The approach is systematic, classifying the procedures into two broad groups: methods based on equilibrium and exhaustive methods. In each case, the principal methods are revisited with a brief description about the principles and chemistry involved and some significant examples. A large number of bibliographic references allow a deeper study on each case, when necessary.

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Solid-phase microextraction using octadecyl-bonded silica immobilized on the surface of a rotating disk: Determination of hexachlorobenzene in water

Cited by 34 publications

References 13 publications

Extraction of Polycyclic Aromatic Hydrocarbons From Water Samples Into a Rotating-Disk Microextractor and the Subsequent Determination by Gas Chromatography-Mass Spectrometry

Extraction of Polycyclic Aromatic Hydrocarbons From Water Samples Into a Rotating-Disk Microextractor and the Subsequent Determination by Gas Chromatography-Mass Spectrometry

Recent Advances in Extraction and Stirring Integrated Techniques

Sample Preparation Strategies for Analytical Determinations

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