A fully automated effervescence assisted dispersive liquid–liquid microextraction based on a stepwise injection system. Determination of antipyrine in saliva samples

Medinskaia, Kseniia; Vakh, Christina; Aseeva, Darina; Andruch, Vasiľ; Москвин, Л. Н.; Bulatov, Andrey

doi:10.1016/j.aca.2015.11.017

Cited by 35 publications

(10 citation statements)

References 32 publications

(31 reference statements)

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“…Thus, they produce a high-amplitude signal (Figure A–F), while no trapping is used. Interestingly, effervescence is also utilized to enhance dispersive liquid–liquid microextraction, in which case, organic solvent is dispersed in the whole aqueous sample . Fizzy extraction does not use immiscible organic solvent as an extracting phase.…”

Section: Resultsmentioning

confidence: 99%

Fizzy Extraction of Volatile and Semivolatile Compounds into the Gas Phase

Chang

Urban

2016

Anal. Chem.

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Extraction of volatile and semivolatile compounds from liquid matrixes with high yields, and transferring the extracts to detectors in real time, is challenging. Common extraction procedures involve heating the samples to release the analytes to the gas phase and, in some cases, trapping the gas-phase analytes into sorbents or containers. Here, we propose a new method for fast extraction of volatile and semivolatile compounds from liquid matrixes. This method involves dissolution of a carrier gas in the liquid sample by applying a moderate overpressure (∼150 kPa) and stirring the sample. An abrupt decompression of the extraction chamber leads to effervescence. In this step, many bubbles are instantly formed in the sample matrix. The dissolved carrier gas as well as dissolved volatiles are liberated into the headspace of the extraction chamber within a short period of time (few seconds). The gaseous effluent of the extraction chamber is immediately transferred to the online detector; in this case, an atmospheric pressure chemical ionization interface of a triple quadrupole mass spectrometer. The fast release of the gas-phase extract gives rise to a high signal recorded by the detector; several times higher than the signal recorded during direct infusion of headspace vapors without fizzy extraction. This feature provides the means to detect and quantify analytes present in solutions in a short period of time. Here we show that fizzy extraction is suitable for analysis of volatile/semivolatile compounds present in various samples, including those containing complex matrixes.

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Section: Resultsmentioning

confidence: 99%

Fizzy Extraction of Volatile and Semivolatile Compounds into the Gas Phase

Chang

Urban

2016

Anal. Chem.

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“…The extracts are finally analyzed by UV-vis spectroscopy. The same year, they proposed the first approach for the complete automation of the technique using the determination of antipyrine in saliva samples as the model analytical problem [58]. For this purpose, a stepwise injection analysis system was designed containing a mixing chamber as the core element.…”

Section: Alternative Workflows For Ea-dllmementioning

confidence: 99%

Effervescence-Assisted Microextraction—One Decade of Developments

2020

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Dispersive microextraction techniques are key in the analytical sample treatment context as they combine a favored thermodynamics and kinetics isolation of the target analytes from the sample matrix. The dispersion of the extractant in the form of tiny particles or drops, depending on the technique, into the sample enlarges the contact surface area between phases, thus enhancing the mass transference. This dispersion can be achieved by applying external energy sources, the use of chemicals, or the combination of both strategies. Effervescence-assisted microextraction emerged in 2011 as a new alternative in this context. The technique uses in situ-generated carbon dioxide as the disperser, and it has been successfully applied in the solid-phase and liquid-phase microextraction fields. This minireview explains the main fundamentals of the technique, its potential and the main developments reported.

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“…Very recently, effervescence as a novel dispersion technique, which operates on the basis of in-situ generation of CO 2 , has been successfully developed and applied for the dispersion of extractant without disperser solvent or additional energy (Lasarte-Aragonés et al 2014). Following the pioneering research of LasarteAragonés et al (2014), this novel disperser-solventfree microextraction methodology termed as effervescence assisted dispersive liquid-liquid microextraction (EA-DLLME) has demonstrated excellent extraction yields for trace analysis (Jiang et al 2014;Medinskaia et al 2016;Yang et al 2016).…”

Section: Introductionmentioning

confidence: 98%

Magnetic effervescent tablet-assisted ionic liquid dispersive liquid–liquid microextraction of selenium for speciation in foods and beverages

Wang

Cao

et al. 2016

Food Additives & Contaminants: Part A

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A novel, simple and rapid method based on magnetic effervescent tablet-assisted ionic liquid dispersive liquid-liquid microextraction (MEA-IL-DLLME) followed by graphite furnace atomic absorption spectrometry (GFAAS) determination was established for the speciation of selenium in various food and beverage samples. In the procedure, a special magnetic effervescent tablet containing CO2 sources (sodium carbonate and sodium dihydrogenphosphate), ionic liquids and Fe3O4 magnetic nanoparticles (MNPs) was used to combine extractant dispersion and magnetic recovery procedures into a single step. The parameters influencing the microextraction efficiency, such as pH of the sample solution, volume of ionic liquid, amount of MNPs, concentration of the chelating agent, salt effect and matrix effect were investigated and optimised. Under the optimised conditions, the limits of detection (LODs) for Se(IV) were 0.021 μg l(-)(1) and the linear dynamic range was 0.05-5.0 μg l(-)(1). The relative standard deviation for seven replicate measurements of 1.0 μg l(-)(1) of Se(IV) was 2.9%. The accuracy of the developed method was evaluated by analysis of the standard reference materials (GBW10016 tea, GBW10017 milk powder, GBW10043 Liaoning rice, GBW10046 Henan wheat, GBW10048 celery). The proposed method was successfully applied to food and beverage samples including black tea, milk powder, mushroom, soybean, bamboo shoots, energy drink, bottled water, carbonated drink and mineral water for the speciation of Se(IV) and Se(VI) with satisfactory relative recoveries (92.0-108.1%).

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A fully automated effervescence assisted dispersive liquid–liquid microextraction based on a stepwise injection system. Determination of antipyrine in saliva samples

Cited by 35 publications

References 32 publications

Fizzy Extraction of Volatile and Semivolatile Compounds into the Gas Phase

Fizzy Extraction of Volatile and Semivolatile Compounds into the Gas Phase

Effervescence-Assisted Microextraction—One Decade of Developments

Magnetic effervescent tablet-assisted ionic liquid dispersive liquid–liquid microextraction of selenium for speciation in foods and beverages

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