Capillary liquid chromatographic analysis of fat-soluble vitamins and β-carotene in combination with in-tube solid-phase microextraction

Xu, Hai; Li, Jia

doi:10.1016/j.jchromb.2008.11.011

Cited by 14 publications

(3 citation statements)

References 19 publications

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“…The so-called in-tube solid-phase ion-pair microextraction (SPIPME) method was applied to evaluate the concentration of flavins in E. coli cell extracts. A similar extractive phase was subsequently used for the extraction of fat-soluble vitamins and β-carotene in extracts obtained from corns [34].…”

Section: Octadecyl and Octyl Silica Monolithsmentioning

confidence: 99%

Innovations in Extractive Phases for In-Tube Solid-Phase Microextraction Coupled to Miniaturized Liquid Chromatography: A Critical Review

et al. 2020

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Over the past years, a great effort has been devoted to the development of new sorbents that can be used to pack or to coat extractive capillaries for in-tube solid-phase microextraction (IT-SPME). Many of those efforts have been focused on the preparation of capillaries for miniaturized liquid chromatography (LC) due to the reduced availability of capillary columns with appropriate dimensions for this kind of system. Moreover, many of the extractive capillaries that have been used for IT-SPME so far are segments of open columns from the gas chromatography (GC) field, but the phase nature and dimensions are very limited. In particular, polar compounds barely interact with stationary GC phases. Capillary GC columns may also be unsuitable when highly selective extractions are needed. In this work, we provide an overview of the extractive capillaries that have been specifically developed for capillary LC (capLC) and nano LC (nanoLC) to enhance the overall performance of the IT-SPME, the chromatographic separation, and the detection. Different monolithic polymers, such as silica C18 and C8 polymers, molecularly imprinted polymers (MIPs), polymers functionalized with antibodies, and polymers reinforced with different types of carbon nanotubes, metal, and metal oxide nanoparticles (including magnetic nanoparticles), and restricted access materials (RAMs) will be presented and critically discussed.

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Section: Octadecyl and Octyl Silica Monolithsmentioning

confidence: 99%

Innovations in Extractive Phases for In-Tube Solid-Phase Microextraction Coupled to Miniaturized Liquid Chromatography: A Critical Review

et al. 2020

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“…SPE using molecularly imprinted nanoparticles for extraction of both hydrophilic and hydrophobic analytes is an example of developed green extraction methods . LPME , SPME and dispersive liquid–liquid microextraction (DLLME) have been applied for the extraction of FSVs from various sample matrix. Ultrasound‐assisted emulsification microextraction with applying both low‐ and heavy‐density organic solvents is one of the alternative dispersion techniques in which the need of disperser solvent was eliminated through using the ultrasonic radiation .…”

Section: Introductionmentioning

confidence: 99%

Flotation/ultrasound‐assisted microextraction followed by HPLC for determination of fat‐soluble vitamins in multivitamin pharmaceutical preparations

Shahdousti

Aghamohammadi

2018

J of Separation Science

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Dissolved carbon dioxide flotation-emulsification microextraction technique coupled with high-performance liquid chromatography was developed for separation and determination of fat-soluble vitamins (A, D , E, and K ) in multivitamin pharmaceutical preparations. Dissolved carbon dioxide flotation was used to break up the emulsion of extraction solvent in water and to collect the extraction solvent on the surface of aqueous sample in narrowed capillary part of extraction cell. Carbon dioxide bubbles were generated in situ through the addition of 300 μL of concentrated hydrochloric acid into the alkaline sample solution at pH = 11.5 (1% w/v sodium carbonate), which was sonicated to intensify the carbon dioxide bubble generation. Several factors affecting the extraction process were optimized. Under the optimal conditions, the limits of detection were 0.11, 0.47, 0.20 and 0.35 μg/L for A, E, D , and K vitamins in water samples, respectively. The inter-day and intra-day precision of the proposed method were evaluated in terms of the relative standard deviation and were <10.5%.

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“…Nevertheless, it is costly and hard to be applied widely in the routine determination. As a simple and versatile method, SPE has also been reported for the extraction of fat-soluble vitamins [15][16][17][18]. Comparing with traditional LLE method, SPE does not require sophisticated equipment and provides high preconcentration efficiency.…”

Section: Introductionmentioning

confidence: 99%

Development of magnetic octadecylsilane particles as solid‐phase extraction adsorbent for the determination of fat‐soluble vitamins in fruit juice‐milk beverage by capillary liquid chromatography

Liu

et al. 2010

J of Separation Science

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A sensitive, fast and simple method based on magnetic octadecylsilane particles was developed for the extraction of three fat-soluble vitamins followed by capillary LC (CLC) analysis with UV detection. Magnetic octadecylsilane particles were prepared based on three-step reactions including co-precipitation, sol-gel polymerization and alkylation. The characterization of the prepared product was studied by scanning electron microscope and Fourier-transform infrared spectrometry. The particles were used as magnetic SPE adsorbent for the extraction of fat-soluble vitamins in fruit juice-milk beverage. The extraction condition and efficiency of the particles for fat-soluble vitamins were investigated. By coupling magnetic SPE with capillary LC with UV detection, low concentrations of fat-soluble vitamins in fruit juice-milk beverage can be detected without the interference from other substances in the sample matrix.

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Capillary liquid chromatographic analysis of fat-soluble vitamins and β-carotene in combination with in-tube solid-phase microextraction

Cited by 14 publications

References 19 publications

Innovations in Extractive Phases for In-Tube Solid-Phase Microextraction Coupled to Miniaturized Liquid Chromatography: A Critical Review

Innovations in Extractive Phases for In-Tube Solid-Phase Microextraction Coupled to Miniaturized Liquid Chromatography: A Critical Review

Flotation/ultrasound‐assisted microextraction followed by HPLC for determination of fat‐soluble vitamins in multivitamin pharmaceutical preparations

Development of magnetic octadecylsilane particles as solid‐phase extraction adsorbent for the determination of fat‐soluble vitamins in fruit juice‐milk beverage by capillary liquid chromatography

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