Vinyl-functionalized mesoporous carbon for dispersive micro-solid phase extraction of azole antifungal agents from aqueous matrices

Yahaya, Noorfatimah; Sijam, Kamaruzaman; Sanagi, Mohd Marsin; Ibrahim, Wan Aini Wan; Mitome, Takahito; Nishiyama, Norikazu; Nur, Hadi; Ghaffar, Zainab Abdul; Aziz, Mohd Yusmaidie; Fauzi, Hafizuddin Mohamed

doi:10.1080/01496395.2019.1675699

Cited by 6 publications

(6 citation statements)

References 48 publications

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“…The reduction in the amount of adsorbed water was caused by a reduction in the pore volume and/or a change in the hydrophobicity of the carbon surfaces. The APTES‐modified carbon surface is expected to be hydrophobic because of the addition of an alkyl chain [53] …”

Section: Resultsmentioning

confidence: 99%

“…Water vapor adsorption tests were performed to prove that surface silanization was accompanied by enhanced surface hydrophobicity and altered pore structure [53] . Saturated potassium chloride aqueous solution used as the humidity adjuster was placed in a closely sealed container and maintained at ambient temperature until the relative humidity in the container reached 80 %.…”

Section: Methodsmentioning

confidence: 99%

“…Water vapor adsorption tests were performed to prove that surface silanization was accompanied by enhanced surface hydrophobicity and altered pore structure. [53] Saturated potassium chloride aqueous solution used as the humidity adjuster was placed in a closely sealed container and maintained at ambient temperature until the relative humidity in the container reached 80 %. Each surfacemodified or intact porous carbon (0.1 g), dried at 150 °C for 24 hours and precisely weighed, was then put in the container and kept at ambient temperature for 24 hours.…”

Section: Characterization Of the Surface-modified Carbonsmentioning

confidence: 99%

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Nitrate Uptake from Water Using Amine‐Functionalized Meso‐ and Macroporous Carbons

Namesawa,

Hamada,

Shimoda

et al. 2024

ChemistrySelect

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Meso‐ and macroporous carbon materials modified with protonated amino groups (−NH3+Cl−) for aqueous nitrate (NO3−) uptake were prepared by surface functionalization with aminopropylsilane. Although the silane coupling treatment decreased the specific surface area of the carbons, surface modification with the −NH3+Cl− group improved the NO3− uptake capacity of both meso‐ and macroporous carbons. The amount of NO3− adsorbed depends on the specific surface area of the adsorbent; an adsorbent with a larger specific surface area exhibits a larger uptake capacity. Enhanced NO3− adsorption onto the NH3+Cl−‐modified surface occurred through an ion‐exchange mechanism. Changes in the pH of the sample solutions before and after NO3− uptake revealed the competitive exchange of NO3− and OH−. NO3− uptake is inhibited by the coexistence of anions other than NO3− (excess Cl−, SO42−, CO32− and HCO3−) and/or OH− at high pH. In particular, the influence of excess Cl− reveals that NO3− uptake through ion exchange is not irreversible, and the adsorption capacity is determined based on the ion exchange equilibrium.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Characterization Of the Surface-modified Carbonsmentioning

confidence: 99%

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Nitrate Uptake from Water Using Amine‐Functionalized Meso‐ and Macroporous Carbons

Namesawa,

Hamada,

Shimoda

et al. 2024

ChemistrySelect

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“…There are some limitations in the usage of the chromatographic analytical instruments for the determination of analytes such as the unavailability of them in some laboratories and being matrix effect. In the following, the sample preparation can provide a cleanup step for the biological matrices to expurgate contaminates and raise the sensitivity of analytes during the use of analytical equipment [9]. Liquid‐liquid extraction [10], SPE [11], and SFE [12] were applied as traditional methods for extraction of antifungal drugs.…”

Section: Introductionmentioning

confidence: 99%

Air‐assisted in situ deep eutectic solvent decomposition followed by the solidification of floating organic droplets‐liquid‐liquid microextraction method for extraction of azole antifungal drugs in biological samples prior to high‐performance liquid chromatography

Ezoddin

Abdi

Behnamipour

et al. 2022

J of Separation Science

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A free dispersive method, air‐assisted in situ deep eutectic solvent decomposition followed by the solidification of floating organic droplets liquid‐liquid microextraction was indicated in this study. This technique was utilized to simultaneously ascertain some azole antifungal drugs prior to high‐performance liquid chromatography. In this research, a quasi‐hydrophobic deep eutectic solvent was formed from tetrabutylammonium bromide and 1‐dodecanol as an organic solvent at a 1:2 molar ratio. The synthesized deep decomposition in the sample solution caused in situ dispersion of extraction solvent and analytes. Air‐assisted enhanced a dispersion condition in the sample solution. 1‐Dodecanol as a green option was replaced with typical extraction solvents providing the advantages of a suitable freezing point near room temperature and low density. The effect of important analytical parameters on the extraction recovery of analytes was assessed. Under these optimal conditions, the limits of detection and the limits of quantitation determined were in the range of 0.5–2.8 and 1.5–9 μg/L, for water, urine and plasma samples, respectively. The intra‐day and inter‐day relative standard deviations (n = 5) were calculated to be 2.9–4.6 and 4.2–8.9%, respectively. The results represented the effectiveness of the developed method for the extraction and determination of analytes in biological samples.

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“…Efforts for finding more efficient, eco-friendly, rapid, and economical sample preparation methods have led to the development of miniaturized extraction methods. So far, a few miniaturized methods such as dispersive micro-SPE [8], liquid-liquid microextraction [9], solidification of floating organic drop microextraction [10], and solid-phase membrane tip extraction [11] have been reported for the determination of antifungal drugs in various matrices. Recently, some literature deals with applying spin-column micro-SPE (SC-μSPE) as an attractive sample preparation method for analyzing target analytes in biological and environmental matrices [12,13].…”

Section: Introductionmentioning

confidence: 99%

Trace determination of antifungal drugs in biological fluids through a developed approach of hydrogel‐based spin‐column micro‐solid‐phase extraction followed by LC‐MS/MS analysis

Manouchehri

Seidi

Naseri

et al. 2021

J of Separation Science

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In the present research, a blended polyacrylamide-chitosan hydrogel was synthesized. For the first time, the prepared sorbent was efficiently employed in a hydrogel-based spin-column setup as a promising format. The proposed method was applied for monitoring the trace amounts of ketoconazole, clotrimazole, and miconazole in blood samples. Effective adsorption and desorption parameters were optimized using a central composite design and the one-variable-ata-time method. Under the optimal conditions, the calibration curves were linear in the range of 15.0-1000.0, 1.0-1000.0, and 2.0-1000.0 ng mL -1 for ketoconazole, clotrimazole, and miconazole, respectively, along with intra-and interday precision less than 8.4%. Limits of detection were obtained between 0.2 and 5.0 ng mL -1 . The preconcentration factors were found in the range of 5.9-7.8.The introduced method was successfully applied for micro-solid-phase extraction of trace amounts of target antifungal drugs in blood samples, followed by liquid chromatography-tandem mass spectrometry. Satisfactory relative recoveries of 94.5-103.5% were obtained, implying method reliability. Overall, the proposed method provides good accuracy and repeatability, high reusability, and good applicability to determine antifungal drugs in complex biological matrices.

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Vinyl-functionalized mesoporous carbon for dispersive micro-solid phase extraction of azole antifungal agents from aqueous matrices

Cited by 6 publications

References 48 publications

Nitrate Uptake from Water Using Amine‐Functionalized Meso‐ and Macroporous Carbons

Nitrate Uptake from Water Using Amine‐Functionalized Meso‐ and Macroporous Carbons

Air‐assisted in situ deep eutectic solvent decomposition followed by the solidification of floating organic droplets‐liquid‐liquid microextraction method for extraction of azole antifungal drugs in biological samples prior to high‐performance liquid chromatography

Trace determination of antifungal drugs in biological fluids through a developed approach of hydrogel‐based spin‐column micro‐solid‐phase extraction followed by LC‐MS/MS analysis

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