Synthesis of a magnetic SBA-15-NH2@Dual-Template Imprinted Polymer for solid phase extraction and determination of Pb and Cd in vegetables; Box Behnken design

Hashami, Zahra sadat; Taheri, Alireza; Alikarami, Mohammad

doi:10.1016/j.aca.2021.339262

Cited by 24 publications

(13 citation statements)

References 51 publications

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“…The FTIR spectra shows that there is no structural alteration up to 5 elution cycle and hence no change in adsorption capacity, while after 25 cycles there is a slight decrease in peak intensities which is translated in the decrease (10 % less than the equilibrium sorption capacity; corresponding to 158 mg g −1 ) of adsorption capacity. The rigid structure of mesoporous silica contributes to its acid resilience and reusability, which can lead to a relative increase in polymer performance in absorption rate and selectivity [33] …”

Section: Resultsmentioning

confidence: 99%

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Silica Grafted Imprinted Mesoporous Polymer for the Development of SPE Coupled FAAS Method of Nickel Determination, Removal, and Spent Polymer for Reduction of Permanganate: Multivariate Optimization

Rais,

Islam

2024

ChemistrySelect

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A novel silica fabricated allyloxy ethanol based imprinted polymer is synthesised with surface area of 333 m2 g−1 and average pore size of 6.5 nm by an environment friendly one pot surface imprinting process. It was employed for the selective solid‐phase extraction (SPE) of trace Ni(II) in real samples prior to FAAS determination. The factor settings produced via central composite design in response surface methodology (RSM) (pH: 3.6; initial concentration; 800 mg L−1 and time; 15 minute) provide adsorption capacity of 176 mg g−1. Artificial neural network model employed on the RSM data, provided better predictability. Sips isotherm model and BSf kinetic model describes best the sorption phenomena of the homogenous binding terrain. The developed SPE‐coupled FAAS method demonstrate a detection limit of 1.62 μg L−1, quantification limit of 4.17 μg L−1, and Linear dynamic range of 20–8000 μg L−1. It was successfully applied to determine nickel in food (Spinach, Radish, Green tea infusion, Black tea infusion, Coffee, Soya milk, Chocolate Soya milk, Tobacco) and wastewater samples (>99 % removal). For five replicate determinations, the method‘s relative standard deviation was 2.3 %. The method was validated by analysing two certified reference materials, and the outcomes were well‐congruent with standard values. For the synthesised polymer Ni(II) exhibits higher distribution ratio than other competing ions (Cu(II), Pb(II), Cd(II), and Zn(II)) with the imprinting factor; β values of 5.73, 4.98, 6.80, and 5.04 respectively. The reusability experiments revealed that APS@Ni‐IIP retains a strong adsorption efficacy even after 15 cycles and after its exhaustion it was employed as catalyst for reducing permanganate ions, further reducing pollution. The rigid structure of mesoporous silica contributes to its acid resilience and reusability, which can lead to a relative increase in polymer performance in absorption rate and selectivity. Apart from the novelty in the synthesis, thorough examination of the method and material selectivity (in binary, ternary and multielement system), multi fold applications of determination, removal of Ni(II) and reduction of permanganate ions, makes APS@Ni‐IIP a promising candidate for environmental remediation.

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Section: Resultsmentioning

confidence: 99%

“…The rigid structure of mesoporous silica contributes to its acid resilience and reusability, which can lead to a relative increase in polymer performance in absorption rate and selectivity. [33]…”

Section: Desorption and Regenerationmentioning

confidence: 99%

Silica Grafted Imprinted Mesoporous Polymer for the Development of SPE Coupled FAAS Method of Nickel Determination, Removal, and Spent Polymer for Reduction of Permanganate: Multivariate Optimization

Rais,

Islam

2024

ChemistrySelect

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“…Box–Behnken design consists of a rotatable and independent design with a set of variables lying at the midpoint of each surface and replicated variables at the center point of the cube. 32 BBD possesses the advantages of a smaller number of experiments, high precision in the regression equation, accurate prediction performance, etc. 33 It can simultaneously investigate the correlation between several influencing variables and optimizes their experimental results.…”

Section: Methodsmentioning

confidence: 99%

Design of experiments (DoE) to develop and to optimize extraction of psychoactive substances

Tang

Chen

et al. 2023

Anal. Methods

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“…Different routes and modifications are made to obtain the desired color properties, yield, and particle size of the dye for improved dispersibility [1]. Azo dyes are the most used dyes and account for more than 60 % of total dyes [2,3]. Approximately, 70 % of all the dyes used in industry are azo dyes [4,5].…”

Section: Introductionmentioning

confidence: 99%

Untitled

2023

J. Med. Chem. Sci.

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A new azo (LH) ligand was prepared by coupling reaction between, diazonium salt of Sulfamethoxazole, and 8-hydroxyquinoline in a process called diazotization process resulting in azo-ligand [4-((8-hydroxyquinolin-7-yl)-N(4-methylisoxazol-3-yl) benzene sulfonamide]. The azo ligand was identified by using spectroscopic techniques to detect and characterize the formation of ligand and complexes of Ni 2+ , Pt 4+ , Pd 2+ , and Rh 3+ metal ions, and to determine the chelating behavior of ligand and also its bind position. All complexes have a [1:1] [M-ligand] ratio and all complexes are nonelectrolytes and most of the complexes have octahedral geometry, while Pd 2+ complex gave square planer geometry and Ni 2+ complex indicate tetrahedral geometry. Thermal decomposition TGA and DSC results reveal the presence of coordinated water molecules in the complexes. Antioxidant activities of these compounds were evaluated against (DPPH) radical and were compared with the standard natural antioxidant, ascorbic acid. The findings show that these compounds exhibit excellent radical scavenging activities. The geometries were detected depending on Ultra Violet-visible (UV-Vis) technique and according to the Fourier Transform Infrared Spectroscopy (FT-IR) and Liquid Chromatography-mass (LC-Mass) studies; we can also detect the chelating behavior of ligand. While the conductivity properties can be detected by conductivity measurements. In addition, element micro analysis and atomic absorption gave compatible results with theoretically calculated results, and many other techniques support the formation of ligand and occurrence of coordination including (Proton and Carbon-nuclear magnetic resonance ( 1 H & 13 C-NMR) and magnetic quantifications.

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Synthesis of a magnetic SBA-15-NH2@Dual-Template Imprinted Polymer for solid phase extraction and determination of Pb and Cd in vegetables; Box Behnken design

Cited by 24 publications

References 51 publications

Silica Grafted Imprinted Mesoporous Polymer for the Development of SPE Coupled FAAS Method of Nickel Determination, Removal, and Spent Polymer for Reduction of Permanganate: Multivariate Optimization

Silica Grafted Imprinted Mesoporous Polymer for the Development of SPE Coupled FAAS Method of Nickel Determination, Removal, and Spent Polymer for Reduction of Permanganate: Multivariate Optimization

Design of experiments (DoE) to develop and to optimize extraction of psychoactive substances

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