Spider-web-like chitosan/MIL-68(Al) composite nanofibers for high-efficient solid phase extraction of Pb(II) and Cd(II)

Asiabi, Mina; Mehdinia, Ali; Jabbari, Ali

doi:10.1007/s00604-017-2473-z

Cited by 37 publications

(11 citation statements)

References 29 publications

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“…The XRD patterns (Supporting information Fig. S2) of the synthesized MOFs were in good agreement with those reported previously [11,24,[26][27][28]. The BET surface areas and some pore parameters of MOF materials were measured by N 2 adsorption isotherm experiments (Suppporting information Fig.…”

Section: Functionalized Foam Column-based Semi-automated Solid Phase supporting

confidence: 87%

“…Five MOFs, including MIL‐101(Cr), MIL‐101(Fe), ZIF‐8(Zn), HKUST‐1(Cu), and MIL‐68(Al), respectively, were synthesized by a previous method [22–26]. The synthesis procedures can be found in the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

“…Then, 5 μL of the analytical solution was injected into the HPLC-MS/MS system. synthesized by a previous method [22][23][24][25][26]. The synthesis procedures can be found in the Supporting Information.…”

Section: Functionalized Foam Column-based Semi-automated Solid Phase mentioning

confidence: 99%

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A semi‐automatic solid phase extraction system based on MIL‐101(Cr) foam‐filled syringe for detection of triazines in vegetable oils

Jiang

Piao

et al. 2021

J of Separation Science

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In this study, several metal-organic framework-melamine foam columns were first developed and used as a laboratory-made semi-automatic solid phase extraction packed in syringe adsorber for the extraction of six triazine herbicides from vegetable oil samples coupled to high-performance liquid chromatographytandem mass spectrometry. The metal-organic framework-foam columns were prepared using a simple approach by embedding the solid particles in melamine foam using polyvinylidene difluoride physical encapsulation. The method was applicable to a wide variety of metal-organic framework materials, and the incorporated materials retained their unique properties. Key factors that affect the extraction efficiency, including the MIL-101(Cr) amount, sample flow rate, type and volume of the eluting solvent, and flow rate of eluting solvent, were investigated. Under optimum conditions, the proposed method exhibited low limits of detection (0.017-0.096 ng/mL, S/N = 3) for six triazines. The relative standard deviations calculated for all herbicides ranged from 0.2 to 14.9%. This study demonstrated that the MIL-101(Cr)-foam column can be used as a high-quality adsorption material for the detection of triazines in vegetable oils.

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Section: Functionalized Foam Column-based Semi-automated Solid Phase supporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

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A semi‐automatic solid phase extraction system based on MIL‐101(Cr) foam‐filled syringe for detection of triazines in vegetable oils

Jiang

Piao

et al. 2021

J of Separation Science

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“…In several of the reported studies, chitosan was found to play an important role in the extraction efficiency of the developed device [38,41], while in other cases it simply acted as dispersive matrix to confine the main extraction sorbent [40,43]. Recently, Asiabi et al described a composite material consisting of chitosan nanofibers and MOFs, prepared by electrospinning of an acidic solution containing chitosan and the MOF powder [44,45]. This procedure led to the preparation of spiderweb-like formed by electrospun nanofibers, presenting an enhanced surface area compared to the individual components.…”

Section: Chitosan In Sorbent-based Microextraction Methodsmentioning

confidence: 99%

“…This procedure led to the preparation of spiderweb-like formed by electrospun nanofibers, presenting an enhanced surface area compared to the individual components. Both composites, with MOF MIL-68(Al) [44] and MIL-101(Fe) [45], were packed into filter disks to perform m-SPE. Chitosan powder has also been impregnated with an IL solution and then lyophilized to prepare a more efficient sorbent for the fabrication of a m-SPE cartridge [46].…”

Section: Chitosan In Sorbent-based Microextraction Methodsmentioning

confidence: 99%

Biopolymers in sorbent-based microextraction methods

Pacheco‐Fernández

Allgaier-Díaz

Mastellone

et al. 2020

TrAC Trends in Analytical Chemistry

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Since the introduction of the Green Analytical Chemistry guidelines, there has been an increasing concern on the sustainability of sample preparation approaches, particularly if considering they constitute the most time-consuming step of the analytical method and the main source of laboratory wastes. Among the alternatives explored, it is important to highlight the miniaturization of the extraction methods, which has been accompanied by the seek of greener solvents and sorbents. Biopolymers emerge as potential candidates to be used as sorbents in microextraction schemes given their biodegradability, versatility, and easily functionalization. This review offers an overview on biopolymers (chitosan, cellulose, alginate, and agarose) in sorbent-based microextraction approaches, paying attention to the preparation of the sorbent and the format in which biopolymers are incorporated into the sorbent/device, thus implying a specific microextraction approach, their role in the resulting sorbent material, and the reported analytical applications, covering environmental, food, and bioclinical analysis.

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