Determination of bisphenol-A, 2,4-dichlorophenol, bisphenol-AF and tetrabromobisphenol-A in liquid foods and their packaging materials by vortex-assisted supramolecular solvent microextraction/high-performance liquid chromatography

Li, Yingtang; Yang, Jiyong; Guo, Yan Hui; Yang, Yaling

doi:10.1039/c3ay40586a

Cited by 47 publications

(17 citation statements)

References 33 publications

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“…90 s of manual shaking time were selected for subsequent experiments. In 2013, Y. T. Li et al (2013) compared the extraction droplets produced in manual-assisted emulsification and ultrasound-assisted extraction. The manual shaking dispersed analytes well in the emulsion, and that the ultrasound assisted procedure over-emulsified the mixture and resulted in incomplete phase separation.…”

Section: Comparison Between Manual Shaking and Ultrasound-assisted Emmentioning

confidence: 99%

Determination of Alkylphenols in Water by Dispersive Liquid–Liquid Microextraction Based on Solid Formation without a Disperser

Sung¹,

Liu

Leong³

et al. 2014

Analytical Letters

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Dispersive liquid-liquid microextraction based on solid formation without a disperser combined with high-performance liquid chromatography has been developed for the determination of 4-tert-butylphenol, 4-n-nonylphenol, and 4-tert-octylphenol. This method is rapid, easy, and uses only 10 lL of a low toxicity organic solvent (1-hexadecanethiol) for the extraction solvent and no disperser solvent. The extraction time and centrifugation time require less than 10 min. The linear range was 1-500 ng mL À1 for 4-tert-butylphenol, 2-1000 ng mL À1 for 4-tert-octylphenol, and 5-500 ng mL À1 for 4-n-nonylphenol with r 2 ! 0.9986. The detection limits were between 0.2 and 1.5 ng mL À1 . The recoveries of lake and river water samples were in the range of 79% to 108%, and the relative standard deviations were 5% to 10%.

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Section: Comparison Between Manual Shaking and Ultrasound-assisted Emmentioning

confidence: 99%

Determination of Alkylphenols in Water by Dispersive Liquid–Liquid Microextraction Based on Solid Formation without a Disperser

Sung¹,

Liu

Leong³

et al. 2014

Analytical Letters

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“…Li et al. demonstrated that a vortex dispersed the solution better compared to manual shaking and ultrasound. They used a supramolecular solvent and compared the size and shape of droplets under an optical microscope.…”

Section: Homogenous Phase Based Microextractionmentioning

confidence: 99%

“…Temporary local increases in temperature or pressure in the sample solution can occur, which could lead in the worst case to decomposition of the thermally labile analyte [125]. Li et al [130] demonstrated that a vortex dispersed the solution better compared to manual shaking and ultrasound. They used a supramolecular solvent and compared the size and shape of droplets under an optical microscope.…”

Section: Assisted Emulsification Microextraction Techniquementioning

confidence: 99%

“…The right combination of acceptor and donor molecules even allows the creation of either hydrophobic or hydrophilic DES . The extraction of the analyte into the coacervate can be accelerated and improved by using manual shaking, a vortex, or ultrasound . Coacervative DLLME using Triton X‐114 was supported by ultrasound , which can also be used for supporting the DLLME when DES is used (decanoic acid and trioctylmethylammonium chloride) .…”

Section: Homogenous Phase Based Microextractionmentioning

confidence: 99%

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Critical evaluation of microextraction pretreatment techniques—Part 2: Membrane‐supported and homogenous phase based techniques

Havlíková

Čabala

Pacáková

et al. 2018

J of Separation Science

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This review follows up on Part 1, which focused on classification and evaluation of single drop and sorbent‐based microextraction techniques. Membrane‐ and homogenous phase‐based microextraction techniques are discussed and classified in Part 2. These techniques are more recent than those in Part 1 and considerable attention has been paid to their development. The new methodologies are more sensitive and, thanks to their miniaturization, they can be classified as “green”, but no exhaustive classification is available. We hope that this review will contribute to better orientation in these methods.

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“…Extraction is an important step in sample preparation to clean up, isolate, and concentrate the analytes of interest in a matrix . Over the past few years, vortex‐assisted liquid–liquid microextraction (VALLME) has been widely used for sample pretreatment of numerous organic compounds . The advantages of this technique include low cost, simplicity, effectiveness, rapidity, low consumption of an organic extraction solvent, and no need for a disperser solvent.…”

Section: Introductionmentioning

confidence: 99%

Vortex‐assisted liquid–liquid microextraction of strontium from water samples using 4′,4″(5″)‐di‐(tert‐butylcyclohexano)‐18‐crown‐6 and tetraphenylborate

Wang

Chang

Shen

et al. 2017

J of Separation Science

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A vortex-assisted liquid-liquid microextraction method was developed for the chromatographic determination of strontium in aqueous samples. In the method, strontium was complexed with 4',4″(5″)-di-(tert-butylcyclohexano)-18-crown-6 in the presence of tetraphenylborate as the counter anion, which increased the hydrophobicity of the ion-association complex, resulting in its improved extraction into 1-octanol. Strontium from the organic phase was stripped with nitric acid back to aqueous solution and determined by ion chromatography. The optimum microextraction conditions were as follows: 2.0 mL aqueous samples with 3 mM tetraphenylborate; 150 μL of 1-octanol as the extractant phase with 10 mM DtBuCH18C6; vortex extraction time for 10 s; centrifugation at 6000 rpm for 4 min; stripping by 0.1 M nitric acid. Under the optimum conditions, the detection limit for strontium was 0.005 mg/L. The calibration curves showed good linearity over the range between 0.01 and 2.5 mg/L. Intra- and interday precisions of the present method were satisfactory with relative standard deviations of 1.7 and 2.1%, respectively.

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Determination of bisphenol-A, 2,4-dichlorophenol, bisphenol-AF and tetrabromobisphenol-A in liquid foods and their packaging materials by vortex-assisted supramolecular solvent microextraction/high-performance liquid chromatography

Cited by 47 publications

References 33 publications

Determination of Alkylphenols in Water by Dispersive Liquid–Liquid Microextraction Based on Solid Formation without a Disperser

Determination of Alkylphenols in Water by Dispersive Liquid–Liquid Microextraction Based on Solid Formation without a Disperser

Critical evaluation of microextraction pretreatment techniques—Part 2: Membrane‐supported and homogenous phase based techniques

Vortex‐assisted liquid–liquid microextraction of strontium from water samples using 4′,4″(5″)‐di‐(tert‐butylcyclohexano)‐18‐crown‐6 and tetraphenylborate

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