MIL-101(Cr)/MWCNTs-functionalized melamine sponges for solid-phase extraction of triazines from corn samples, and their subsequent determination by HPLC-MS/MS

Qin, Zucheng; Jiang, Yong; Piao, Huilan; Li, Jingkang; Tao, Shuo; Ma, Pinyi; Wang, Xinghua; Song, Daqian; Sun, Ying

doi:10.1016/j.talanta.2019.120676

Cited by 33 publications

(10 citation statements)

References 54 publications

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“…To prepare blank MeS columns, the MeS was first cut into sponge columns (d = 7 mm, h = 2 cm) using a punch. MeS columns were then washed three times with methanol and deionized water to eliminate impurities, and finally dried at 308 K in an oven for 12 h. To prepare MIL-68(Al)/MeS (Figure 1), 150 mg of MIL-68(Al) powder was dispersed in 5 ml of acetone under ultrasound for 25 min [23]. PVDF solution (1.1 g, 7.5 wt.% in N,N-dimethylformamide) was then added to the bottle containing MIL-68(Al)/acetone composite, and the suspension was ultrasonicated for 30 min to obtain the uniform coating solution [30,31].…”

Section: Preparation Of Mofs-coated Mesmentioning

confidence: 99%

“…MeS is a foam-like material comprised of formaldehyde-melaminesodium bisulfite copolymer [22]. Its porous structure (>99%) and its easily modified frame make MeS a suitable adsorption material [23,24]. In addition, the unique structure of MeS facilitates rapid target removal from the aqueous phase, promoting efficient and rapid adsorption of contaminants [25].…”

Section: Introductionmentioning

confidence: 99%

“…In the present study, we combine the advantages of MeS and MIL-68(Al), exploiting the adhesive property of PVDF to bind MIL-68(Al) to MeS through physical encapsulation [23]. Our novel MIL-68(Al)/MeS column was then used as an adsorbent for the extraction of parabens from personal care products [26].…”

Section: Introductionmentioning

confidence: 99%

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Extraction of parabens by melamine sponge with determination by high‐performance liquid chromatography

Jiang

Sun

et al. 2021

J of Separation Science

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In the present study, we propose a novel method for the extraction of parabens in personal care products. A new, simple adsorptive material was obtained by combining metal-organic frameworks and melamine sponges using the adhesive property of polyvinylidene fluoride. This new material, metal-organic frameworks/melamine sponges, was found to be particularly suitable for solid-phase extraction. The structural characteristics of metal-organic frameworks/melamine sponges were first analyzed by scanning electron microscopy.Subsequently, solid-phase extraction was performed on sample solutions, and the extracted substances were then analyzed by high-performance liquid chromatography. Following optimization of important experimental conditions, excellent recovery rates were obtained. Our novel method was then applied to the extraction of four parabens (methylparahydroxybenzoates, ethylparahydroxybenzoates, propylparahydroxybenzoates, and butylparahydroxybenzoates) from real samples. The results yielded limits of detection of 0.26-0.41 ng/mL. The inter-and intra-day recoveries were 104.0-109.7% and 91.2-98.1%, respectively (relative standard deviation, <13.8%).

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Section: Preparation Of Mofs-coated Mesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Extraction of parabens by melamine sponge with determination by high‐performance liquid chromatography

Jiang

Sun

et al. 2021

J of Separation Science

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“…The sponges were employed to extract malachite green from fresh crayfish and squid extracts (samples were homogenized and acetonitrile was added to extract malachite green). Another type of functionalization for MeS reported was the use of carboxylated multi-walled carbon nanotubes and the metal-organic framework MIL-101(Cr) [71]. The synthesis was based on mixing carboxylated multi-walled carbon nanotubes, MIL-101(Cr), and polyvinylidene difluoride, and then immersing MeS into the final solution.…”

Section: Development Of Functionalized Melamine Spongesmentioning

confidence: 99%

Sponges and Sponge-Like Materials in Sample Preparation: A Journey from Past to Present and into the Future

Chatzimitakos

Stalikas

2020

Molecules

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Even though instrumental advancements are constantly being made in analytical chemistry, sample preparation is still considered the bottleneck of analytical methods. To this end, researchers are developing new sorbent materials to improve and replace existing ones, with the ultimate goal to improve current methods and make them more efficient and effective. A few years ago, an alternative trend was started toward sample preparation: the use of sponge or sponge-like materials. These materials possess favorable characteristics, such as negligible weight, open-hole structure, high surface area, and variable surface chemistry. Although their use seemed promising, this trend soon reversed, due to either the increasing use of nanomaterials in sample preparation or the limited scope of the first materials. Currently, with the development of new materials, such as melamine sponges, along with the advancement in nanotechnology, this topic was revived, and various functionalizations were carried out on such materials. The new materials are used as sorbents in sample preparation in analytical chemistry. This review explores the development of such materials, from the past to the present and into the future, as well as their use in analytical chemistry.

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“…MOFs with outstanding performances have become a hot topic in multifunctional materials, and have a potential application feature in many fields like catalysis, drug delivery, gas storage, sensor, separation, and adsorption [24][25][26][27][28]. Besides, MOFs have a potential application prospect in sample pretreatment owing to their large hole sizes, rich π electrons in ligand, and coordinative unsaturated metal sites [29,30]. Based on the hydrostability, MOFs can be divided into water-stable MOFs and moisture-sensitive MOFs [29].…”

Section: Introductionmentioning

confidence: 99%

Moisture‐sensitive metal–organic framework constructed from cobalt and 4‐(4‐pyridyl) benzoic acid for dispersive solid‐phase extraction of polycyclic aromatic hydrocarbons in apple

Fan

Tan

Zhang

et al. 2021

J of Separation Science

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A moisture-sensitive metal-organic framework Co II (pybz) 2 ⋅2DMF was synthesized and applied as the adsorbent of dispersive solid-phase extraction. The structure changed after water treatment due to the fact that two chelate carboxylate groups on the skeleton were transformed to monodentate because of the coordination of water molecules. The material showed good adsorption for fluorene, phenanthrene, fluoranthene, and pyrene in water because of the π-π conjugation and π-complexation effects. Coupled with high-performance liquid chromatography, a dispersive solid-phase extraction method of determining the content of fluorene, phenanthrene, fluoranthene, and pyrene in apple samples was established after optimizing the extraction conditions. Methanol containing 4% acetic acid was used as the effective eluent. The linearities were 0.5-1000 μg/kg for fluorene, phenanthrene and 5-1000 μg/kg for fluoranthene, pyrene. The limits of detection were 0.06-0.6 μg/kg, and the recoveries were 94.4-116.4%. The method has a high sensitivity for the determination of four polycyclic aromatic hydrocarbons in apple samples.

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MIL-101(Cr)/MWCNTs-functionalized melamine sponges for solid-phase extraction of triazines from corn samples, and their subsequent determination by HPLC-MS/MS

Cited by 33 publications

References 54 publications

Extraction of parabens by melamine sponge with determination by high‐performance liquid chromatography

Extraction of parabens by melamine sponge with determination by high‐performance liquid chromatography

Sponges and Sponge-Like Materials in Sample Preparation: A Journey from Past to Present and into the Future

Moisture‐sensitive metal–organic framework constructed from cobalt and 4‐(4‐pyridyl) benzoic acid for dispersive solid‐phase extraction of polycyclic aromatic hydrocarbons in apple

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