Water compatible molecularly imprinted nanoparticles as a restricted access material for extraction of hippuric acid, a biological indicator of toluene exposure, from human urine

Arabi, Maryam; Ghaedi, Mehrorang; Ostovan, Abbas

doi:10.1007/s00604-016-2063-5

Cited by 117 publications

(26 citation statements)

References 41 publications

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“…This tool effectively considers both statistical and mathematical methods for analysis and reduces the number of experiments to be performed quite effectively . Central composite design (CCD) is the most popular design of experiment (DOE) under RSM, which is very popular for its application in several fields for optimization of process variables including chemical modeling . In this study for optimizing the MO dye removal efficiency, a three factors design of experiment was prepared under CCD, which includes contact time (X 1 ), MIMO dose (X 2 ) and initial MO dye concentration (X 3 ) in five coded levels (−α, −1, 0, +1, and +α).…”

Section: Experimental and Analytical Methodologymentioning

confidence: 99%

“…[25,26] Central composite design (CCD) is the most popular design of experiment (DOE) under RSM, which is very popular for its application in several fields for optimization of process variables including chemical modeling. [27][28][29] In this study for optimizing the MO dye removal efficiency, a three factors design of experiment was prepared under CCD, which includes contact time (X 1 ), MIMO dose (X 2 ) and initial MO dye concentration (X 3 ) in five coded levels (−α, −1, 0, +1, and +α). A total of 20 experimental runs were performed, which includes 8 factorial points, 6 axial points and 6 central points.…”

Section: Response Surface Methodologymentioning

confidence: 99%

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Mixed phase Fe₂O₃/Mn₃O₄ magnetic nanocomposite for enhanced adsorption of methyl orange dye: Neural network modeling and response surface methodology optimization

Bhowmik

Deb

Debnath

et al. 2017

Applied Organom Chemis

100

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In this research, a novel magnetic mesoporous adsorbent with mixed phase of Fe2O3/Mn3O4 nanocomposite was prepared by a facile precipitating method and characterized extensively. The prepared nanocomposite was used as adsorbent for toxic methyl orange (MO) dye removal from aqua matrix considering its high surface area (178.27 m2/g) with high saturation magnetization (23.07 emu/g). Maximum dye adsorption occurs at solution pH 2.0 and the electrostatic attraction between anionic form of MO dye molecules and the positively charged nanocomposite surface is the main driving force behind this adsorption. Response surface methodology (RSM) was used for optimizing the process variables and maximum MO removal of 97.67% is obtained at optimum experimental condition with contact time, adsorbent dose and initial MO dye concentration of 45 min, 0.87 g/l and 116 mg/l, respectively. Artificial neural network (ANN) model with optimum topology of 3–5–1 was developed for predicting the MO removal (%), which has shown higher predictive ability than RSM model. Maximum adsorption capacity of this nanocomposite was found to be 322.58 mg/g from Langmuir isotherm model. Kinetic studies reveal the applicability of second‐order kinetic model with contribution of intra‐particle diffusion in this process.

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Section: Experimental and Analytical Methodologymentioning

confidence: 99%

Section: Response Surface Methodologymentioning

confidence: 99%

Mixed phase Fe₂O₃/Mn₃O₄ magnetic nanocomposite for enhanced adsorption of methyl orange dye: Neural network modeling and response surface methodology optimization

Bhowmik

Deb

Debnath

et al. 2017

Applied Organom Chemis

100

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“…A sample cleanup procedure is commonly required to decrease the matrix effect and remove the matrix components which can act as interfering during the analysis. In this regards, SPE is one of the most popular sample preparation methods owing to its significant advantages such as simplicity, rapidity, improvements in automation, various sorbent usage, reproducibility, and high‐throughput capability . Besides, the numerous advantages of SPE and its wide application, it has some disadvantages such as solvent loss, large secondary wastes, time‐consuming procedure, tedious operations, and need for complex equipment.…”

Section: Introductionmentioning

confidence: 99%

Dispersive magnetic solid‐phase extraction of phthalate esters from water samples and human plasma based on a nanosorbent composed of MIL‐101(Cr) metal–organic framework and magnetite nanoparticles before their determination by GC–MS

Dargahi

Ebrahimzadeh

Asgharinezhad

et al. 2018

J of Separation Science

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In this study, a magnetic metal-organic framework was synthesized simply and utilized in the dispersive magnetic solid-phase extraction of five phthalate esters followed by their determination by gas chromatography with mass spectrometry. First, MIL-101(Cr) was prepared hydrothermally in water medium without using highly corrosive hydrofluoric acid, utilizing an autoclave oven heat supply. Afterward, Fe O nanoparticles were decorated into the matrix of MIL-101(Cr) to fabricate magnetic MIL-101 nanocomposite. The nanocomposite was characterized by various techniques. The parameters affecting dispersive magnetic solid-phase extraction efficiency were optimized and obtained as: a sorbent amount of 15 mg; a sorption time of 20 min; an elution time of 5 min; NaCl concentration, 10% w/v; type and volume of the eluent 1 mL n-hexane/acetone (1:1 v/v). Under the optimum conditions detection limits and linear dynamic ranges were achieved in the range of 0.08-0.15 and 0.5-200 μg/L, respectively. The intra- and interday RSD% values were obtained in the range of 2.5-9.5 and 4.6-10.4, respectively. Ultimately, the applicability of the method was successfully confirmed by the extraction and determination of the model analytes in water samples, and human plasma in the range of microgram per liter and satisfactory results were obtained.

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“…As a relatively smart and modern technique, molecular imprinting has been utilized to prepare adsorbents with highly selective capabilities . Imprinted polymers are usually fabricated through copolymerization of a monomer–template complex with a suitable crosslinker.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of azo‐functionalized ion‐imprinted polymeric resin for selective extraction of nickel(II) ions

Monier

Shafik

Abdel-Latif

2018

Polymer International

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Water compatible molecularly imprinted nanoparticles as a restricted access material for extraction of hippuric acid, a biological indicator of toluene exposure, from human urine

Cited by 117 publications

References 41 publications

Mixed phase Fe₂O₃/Mn₃O₄ magnetic nanocomposite for enhanced adsorption of methyl orange dye: Neural network modeling and response surface methodology optimization

Mixed phase Fe₂O₃/Mn₃O₄ magnetic nanocomposite for enhanced adsorption of methyl orange dye: Neural network modeling and response surface methodology optimization

Dispersive magnetic solid‐phase extraction of phthalate esters from water samples and human plasma based on a nanosorbent composed of MIL‐101(Cr) metal–organic framework and magnetite nanoparticles before their determination by GC–MS

Synthesis of azo‐functionalized ion‐imprinted polymeric resin for selective extraction of nickel(II) ions

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Water compatible molecularly imprinted nanoparticles as a restricted access material for extraction of hippuric acid, a biological indicator of toluene exposure, from human urine

Cited by 117 publications

References 41 publications

Mixed phase Fe2O3/Mn3O4 magnetic nanocomposite for enhanced adsorption of methyl orange dye: Neural network modeling and response surface methodology optimization

Mixed phase Fe2O3/Mn3O4 magnetic nanocomposite for enhanced adsorption of methyl orange dye: Neural network modeling and response surface methodology optimization

Dispersive magnetic solid‐phase extraction of phthalate esters from water samples and human plasma based on a nanosorbent composed of MIL‐101(Cr) metal–organic framework and magnetite nanoparticles before their determination by GC–MS

Synthesis of azo‐functionalized ion‐imprinted polymeric resin for selective extraction of nickel(II) ions

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Product

Resources

About

Mixed phase Fe₂O₃/Mn₃O₄ magnetic nanocomposite for enhanced adsorption of methyl orange dye: Neural network modeling and response surface methodology optimization

Mixed phase Fe₂O₃/Mn₃O₄ magnetic nanocomposite for enhanced adsorption of methyl orange dye: Neural network modeling and response surface methodology optimization