Magnetic Luffa@metal-organic frameworks (MOF-199) nanocomposite for the solid phase microextraction of some metal ions at trace levels from food and water samples

Ahmed, Hassan Elzain Hassan; Soylak, Mustafa

doi:10.1016/j.jfca.2023.105396

Cited by 15 publications

(4 citation statements)

References 70 publications

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“…LDHs can also induce the precipitation of metal hydroxides when the concentration of metal ions exceeds their solubility limit, resulting in metal hydroxides precipitating onto the LDH surface and facilitating the efficient removal of metal ions from the solution. [52][53][54][55][56][57] In this case only electrostatic interactions and isomorphic substitution may happen. Precipitation of metal hydroxides cannot happen due to this adsorption was done within neutral media (pH = 7.0).…”

Section: Optimization Studymentioning

confidence: 99%

“…Optimization studies are required to achieve a balance between maximum extraction efficiency and the minimum sorbent amount. 52,53 The quantity of sorbent was optimized in the range of 5-25 mg to achieve substantial recovery values while minimizing sorbent usage. It was determined that the minimum amount of sorbent required for quantitative recovery of both analytes was 5 mg, as shown in Fig.…”

Section: Optimization Studymentioning

confidence: 99%

“…Solubility, selectivity, and compatibility with subsequent analysis methods should all be considered when selecting an eluent. 26,53 In this study, different concentrations and volumes of HNO3 were studied, with the results depicted in Figs.…”

Section: Optimization Studymentioning

confidence: 99%

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A New Micro-Solid Phase Extraction Using ZnMnAl LDH Nano-Sorbent For Cu And Ni Determination In Natural Water And Soil

Soylak

2024

At.Spectrosc.

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Layered double hydroxides (LDHs) are a class of materials that may be readily synthesized in a laboratory environment. This work successfully conducted the synthesis of a new nanomaterial (ZnMnAl LDH). The characterization of this material was accomplished utilizing many analytical techniques, including FTIR, XRD, SEM-mapping, and FE-SEM. ZnMnAl LDH was employed to separate and enrich Cu(II) and Ni(II) from soil and water samples. The Cu and Ni ions were eluted from ZnMnAl LDH nanoparticles by using 2 mL of 0.1 mol L −1 of HNO3. The metal ions were quantified using flame atomic absorption spectrometry (FAAS). An investigation was conducted to examine the impact of many analytical factors on the efficiency of metal ions' extraction. These parameters include pH, sorbent amount, eluent volume, eluent concentration, sample volume, and possible interfering ions. The detection limits for Cu(II) and Ni(II) were found to be 0.74 and 0.52 μg kg −1 , respectively. In addition, the relative standard deviation (RSD%) for Cu(II) is 3.8 and for Ni(II) is 1.9. The linear range for both analytes is 50-1000 μg L −1 , and the preconcentration factor is 15 for both. The method's validation was verified by the analysis of certified reference materials, namely BCR-505 estuarine water and GBW07429 (GSS-15) soil. For soil samples, Ni(II) and Cu(II) concentrations vary from 9.8 to 62.8 mg kg -1 and 9.9 to 73.5 mg kg -1 , respectively. The technique described was used to quantify trace concentrations of copper (Cu) and nickel (Ni) in samples of both natural water and soil.

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Section: Optimization Studymentioning

confidence: 99%

Section: Optimization Studymentioning

confidence: 99%

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A New Micro-Solid Phase Extraction Using ZnMnAl LDH Nano-Sorbent For Cu And Ni Determination In Natural Water And Soil

Soylak

2024

At.Spectrosc.

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“…Therefore, the sensitivity and effectiveness of the approach will be significantly influenced by the coating's characteristics [5]. To develop SPME fibers, various compounds, including covalent organic framework [6,7], ringent multishelled hollow MIL-88B (RMH-MIL-88B) [8], magnetic Luffa@MOF-199 [9], carbon nano onion/metalorganic framework [10], zeolitic imidazole framework-67 (ZIF-67) [11], MIL-88B@MIL-88A@chitosan [12], and ZIF-8 @ ZIF67/Fe 3 O 4 [13], have been utilized. It is clear that among the various compounds reported as coatings for SPME, MOFs have attracted the attention of many researchers due to their intriguing characteristics [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of dual‐layer metal‐organic framework as a fiber coating based on copper‐based metal‐organic framework @ zeolitic imidazolate framework‐8 for solid‐phase microextraction of some selected parabens and their quantification using high performance liquid chromatography

Mohammed,

Ghani,

Raoof

2023

Separation Science Plus

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Herein, the zeolitic imidazolate framework‐8 template was accommodated onto the surface of a pencil graphite substrate through the electrodeposition system. Then, Zn in the zeolitic imidazolate framework‐8 was replaced with Cu atoms via the galvanic replacement procedure. The modified template was used for the synthesis of another metal‐organic framework (copper‐benzene di carboxylic acid) by a solvothermal method. The prepared fiber was characterized by field emission‐scanning electron microscopy, Fourier transform infrared spectroscopy, and X‐ray diffraction technique. Then, it was employed for direct immersion solid‐phase microextraction of methyl, ethyl, and butyl parabens. Various factors, such as the pH of the sample solution, stirring rate, desorption volume, the concentration of salt, extraction time, and desorption time, were selected and optimized. Under the optimized condition (extraction time = 30 min, desorption time = 2 min, desorption volume = 200 μL, salt concentration = 0% w/v, sample solution pH = 3.0, and stirring rate = 700 rpm), the linearity of the method was in the range of 1–200 μg/L (r2 > 0.9926). The limits of detection and quantification fall between 0.28–0.65 μg/L and 0.91–1.98 μg/L, respectively. The analysis of selected parabens in toothpaste and hand and face lotion, were also done using the suggested methodology.

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MnO₂@Al‐BDC nanocomposite as adsorbent of remarkable high efficiency toward iron remediation from wastewaters

Said,

Sayed,

Aly

et al. 2024

Applied Organom Chemis

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Global environmental problems, especially those related to water contamination brought on by rapid industrialization and economic growth, are among the most dangerous threats facing humanity today. In this research work, Al3+ based metal–organic framework with 1,4‐benzenedicarboxylic acid (H2BDC) linker has been synthesized by a simple and economic coprecipitation method. The obtained Al‐BDC MOF was utilized as an adsorbent for sequestering iron from wastewater, but only 54.0% of iron concentration was eliminated after 120 min. To boost the removal efficiency, modification of the Al‐BDC MOF was carried out. MnO2@Al‐BDC nanocomposite was prepared and applied as a nanoadsorbent for iron remediation from water. The adsorption capability of Al‐BDC MOF was greatly enhanced by facile modification. The adsorption efficiency reached 97.0% using 35.0 mg of the nanocomposite after 120 min compared to 54.0% iron removal using the un‐modified MOF. The effect of pH of the medium was then studied using MnO2@Al‐BDC nanocomposite. The best elimination efficacy of iron was accomplished at pH ~ 2.2. The adsorption of iron on the surface of MnO2@Al‐BDC nanocomposite attains 97.0% (120 min) using a 35.0 mg dose of adsorbent and reaches 98.7% utilizing a 50.0 mg dose of adsorbent. In contrast, at pH = 9.2, the removal efficiency drops to 90.0% (after 120 min, 35.0 mg adsorbent). The adsorption capability was examined also using a variety of iron concentrations, i.e., 2.5, 5.0, and 7.5 mg/L where the adsorption efficiency dropped notably upon increasing the concentration. It dropped from 96.3% to 87.0% using 35.0 mg of MnO2@Al‐BDC nanocomposite at 90 min. The newly developed adsorbent showed a pronounced efficiency for Fe3+ removal against real samples collected from different water sources. Ultimately, this research introduces a novel MnO2@Al‐BDC nanocomposite, synthesized through a simple and economical coprecipitation method, to address water contamination by iron. The innovation lies in the significant enhancement of iron elimination efficiency, from 54.0% with unmodified Al‐BDC MOF to 97.0% with the MnO2@Al‐BDC nanocomposite.

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Magnetic Luffa@metal-organic frameworks (MOF-199) nanocomposite for the solid phase microextraction of some metal ions at trace levels from food and water samples

Cited by 15 publications

References 70 publications

A New Micro-Solid Phase Extraction Using ZnMnAl LDH Nano-Sorbent For Cu And Ni Determination In Natural Water And Soil

A New Micro-Solid Phase Extraction Using ZnMnAl LDH Nano-Sorbent For Cu And Ni Determination In Natural Water And Soil

MnO₂@Al‐BDC nanocomposite as adsorbent of remarkable high efficiency toward iron remediation from wastewaters

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Magnetic Luffa@metal-organic frameworks (MOF-199) nanocomposite for the solid phase microextraction of some metal ions at trace levels from food and water samples

Cited by 15 publications

References 70 publications

A New Micro-Solid Phase Extraction Using ZnMnAl LDH Nano-Sorbent For Cu And Ni Determination In Natural Water And Soil

A New Micro-Solid Phase Extraction Using ZnMnAl LDH Nano-Sorbent For Cu And Ni Determination In Natural Water And Soil

MnO2@Al‐BDC nanocomposite as adsorbent of remarkable high efficiency toward iron remediation from wastewaters

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MnO₂@Al‐BDC nanocomposite as adsorbent of remarkable high efficiency toward iron remediation from wastewaters