Graphene and zeolite as adsorbents in bar-micro-solid phase extraction of pharmaceutical compounds of diverse polarities

Jajuli, Maizatul Najwa; Herzog, Grégoire; Hébrant, Marc; Ng, Eng-Poh; Rahim, Afidah Abdul; Saad, Bahruddin; Hussin, M. Hazwan

doi:10.1039/d1ra01569a

Cited by 6 publications

(3 citation statements)

References 57 publications

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“…ACN has been reported in the literature to promote the desorption of a diversity of analytes, using different extraction techniques. [31][32][33][34][35][36] This behavior was probably due to the medium elution capacity of ACN, and this solvent could disrupt the polar and non-polar interactions between IBU and the sites of the sorbents. 34 The higher desorption values were proportional to the ACN volume (Fig.…”

Section: Analytical Methods Papermentioning

confidence: 99%

Evaluation of organo-vermiculites as sorbent phases for solid-phase extraction of ibuprofen from water

Batista,

Gonçalves,

Bressan

et al. 2024

Anal. Methods

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Section: Analytical Methods Papermentioning

confidence: 99%

Evaluation of organo-vermiculites as sorbent phases for solid-phase extraction of ibuprofen from water

Batista,

Gonçalves,

Bressan

et al. 2024

Anal. Methods

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show abstract

“…39 Concerning polarity, adsorbents can be classified as polar or hydrophilic and non-polar or hydrophobic. 40 In general, hydrophilic or polar adsorbents are used to adsorb substances that are more polar than the fluid they contain. Non-polar or hydrophobic species remove less polar species.…”

Section: Adsorption For Purification and Detoxification Of Biocompoundsmentioning

confidence: 99%

“…Therefore, the pore size distribution is essential to the adsorbent's adsorption capacity 39 . Concerning polarity, adsorbents can be classified as polar or hydrophilic and non‐polar or hydrophobic 40 . In general, hydrophilic or polar adsorbents are used to adsorb substances that are more polar than the fluid they contain.…”

Section: Adsorption For Purification and Detoxification Of Biocompoundsmentioning

confidence: 99%

Adsorbents for the purification and recovery of biocompounds: An updated review

Castro,

Sganzerla,

Costa

et al. 2023

Biofuels Bioprod Bioref

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Recently, the development of techniques to produce detoxified biocompounds has attracted much research interest. This study reviews adsorbents for application in the purification and detoxification of biocompounds, aiming to identify the field's knowledge gaps, trends, updates and hotspots. This review focuses on the description of the types of adsorbents (activated carbon, zeolites, clays, clay minerals and biosorbents) and their activation methods (chemical and physical) for laboratory and industrial adsorption. The adsorbents that stand out are activated carbon and chitosan‐based adsorbents. Moreover, there is a research trend toward using adsorbents to purify bioactive compounds, sugars and amino acids. Finally, adsorbents underscore a growing global research interest in exploring effective treatments for removing various combinations.

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Pre-concentration of pesticides in water using isophorone diamine multiwalled carbon nanotubes-based solid-phase extraction technique and analysis by gas chromatography–mass spectrometry

Sethoga,

Magadzu,

Ambushe

2023

Int. J. Environ. Sci. Technol.

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The existence of pesticides in water at ultra-trace levels necessitates the use of a suitable pre-concentration method for their detection. The objective of this study was to develop an ultra-synthetic adsorbent to extract chlorpyrifos (CPF) and imazalil (IMA) pesticides in water. X-ray diffraction (XRD), thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy confirm that both oxidised and isophorone diamine multiwalled carbon nanotubes (IPD-MWCNTs) were successfully prepared with an intact structure; which was further confirmed by transmission electron microscopy (TEM) and energy-dispersive spectroscopy (EDS). The Brunauer–Emmet–Teller (BET) showed a high surface area of both oxidised and IPD-MWCNTs, which is linked to the formation of additional active sites. TGA further showed that the nanocomposites were highly stable within the pesticides quantification operating temperature. CPF and IMA were recovered using a low dosage of IPD-MWCNTs adsorbent (0.030 g) and eluted by a combined solvent (ethanol and chloroform (50:50, v/v)). The adsorbent was reusable over seven repeated cycles, with an acceptable percentage relative standard deviation (%RSD) ranging from 3 to 8%. The IPD-MWCNTs adsorption sites are highly stable and cannot be easily fouled, as compared to that of oxidised MWCNTs. Lower limits of detection (LOD) and quantification (LOQ) for CPF (0.026 and 0.078 µg.L−1) and IMA (0.033 and 0.100 µg.L−1) were achieved. Better recoveries for both analytes at low and high concentrations (as well as in real water samples) were obtained by IPD-MWCNTs whereas a conventional adsorbent (i.e. polymeric reverse phase) can only achieve better recoveries at high concentrations.

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Graphene and zeolite as adsorbents in bar-micro-solid phase extraction of pharmaceutical compounds of diverse polarities

Abstract: A bar micro-solid phase (bar μ-SPE) extraction method using either graphene or zeolite or their mixtures as an adsorbent, coupled with high-performance liquid chromatography was developed for the determination of pharmaceutical compounds of diverse polarity.

Cited by 6 publications

References 57 publications

Evaluation of organo-vermiculites as sorbent phases for solid-phase extraction of ibuprofen from water

Evaluation of organo-vermiculites as sorbent phases for solid-phase extraction of ibuprofen from water

Adsorbents for the purification and recovery of biocompounds: An updated review

Pre-concentration of pesticides in water using isophorone diamine multiwalled carbon nanotubes-based solid-phase extraction technique and analysis by gas chromatography–mass spectrometry

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