Magnetic Separation Shemirani

Farzaneh SHEMIRANI University of Tehran, Tehran UT ...

Farzaneh Shemirani. A magnetic solid phase extraction method is presented to preconcentrate Pb (II), Cd (II), Ni (II) and Zn (II) simultaneously. The adsorbent (mMoS2-CS), consisting of Fe3O4 ...

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Mixed Hemi-Micelle Solid-Phase Extraction Based on ...

Farzaneh Shemirani. Farzaneh Shemirani. ... this was the first time a mixed hemimicelles SPE method based on Fe3O4 NPs magnetic separation had been used for the pretreatment of environmental water ...

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Speciation of chromium in waters using dispersive micro ...

2020-3-24  Yousefi, S. M. Shemirani, F. Carbon nanotube-based magnetic bucky gels in developing dispersive solid-phase extraction: application in rapid speciation analysis of Cr(VI) and Cr(III) in water ...

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Molecules Free Full-Text Sample Preparation Using ...

Aliyari, E.; Alvand, M.; Shemirani, F. Simultaneous separation and preconcentration of lead and cadmium from water and vegetable samples using a diethylenetriamine-modified magnetic graphene oxide nanocomposite. Anal. Methods 2015, 7, 7582–7589.

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Magnetic [email protected] acid

2021-8-31  Magnetic nanohybrid ZnFe 2 O 4 ABSTRACT How to cite this article: Hossein Beyki M , Shemirani F, Magnetic ZnFe 2 O 4 @polyhydroxybenzoic acid nanostructure for efficient B.subtilis capturing. Nanomed Res J, 2017; 2(3):165-170. DOI: 10.22034/nmrj.2017.03.004 INTRODUCTION Pathogenic microorganisms are in the spotlight of health care field.

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Magnetic Graphene-Dispersive Solid-Phase Extraction for ...

2015-10-5  A magnetic-dispersive solid-phase extraction (MDSPE) was used for precocentration of Pb(II) and Cd(II) in milk, yoghurt and water samples. An appropriate amount of suspension containing the magnetic graphene and Triton X-114 was injected rapidly into the aqueous sample by a syringe. Triton X-114 was used to achieve stable suspension of graphene in solution. The structure of the resulting ...

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Magnetic solid-phase extraction using carbon nanotubes

2015-9-10  Magnetic solid-phase extraction (M-SPE) is a procedure based on the use of magnetic sorbents for the separation and preconcentration of different organic and inorganic analytes from large sample volumes. The magnetic sorbent is added to the sample solution and the target analyte is adsorbed onto the surface of the magnetic sorbent particles (M ...

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Preconcentration of cobalt(II) using polythionine-coated ...

2016-3-29  The article describes a magnetic nanocomposite (mag-NC) that was obtained by oxidative polymerization of thionine in the presence of Fe3O4 nanoparticles. The mag-NC was characterized by FTIR spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy and vibrating sample magnetometry. It is shown that the mag-NC represents a useful sorbent for magnetic solid

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Magnetic Solid Phase Extraction Applied to Food Analysis

Magnetic solid phase extraction has been used as pretreatment technique for the analysis of several compounds because of its advantages when it is compared with classic methods. This methodology is based on the use of magnetic solids as adsorbents for preconcentration of different analytes from complex matrices. Magnetic solid phase extraction minimizes the use of additional steps such as ...

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Applicability of an eco-friendly deep eutectic solvent ...

2021-11-15  Magnetic adsorbent is controllable via an external magnetic field, hence filtration and centrifuge are not vital for separation , . Moreover, this technique benefits from nanomaterials, because of having stronger magnetic property, high adsorption capacity and more surface area.

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Farzaneh SHEMIRANI University of Tehran, Tehran UT ...

Farzaneh Shemirani. A magnetic solid phase extraction method is presented to preconcentrate Pb (II), Cd (II), Ni (II) and Zn (II) simultaneously. The adsorbent (mMoS2-CS), consisting of Fe3O4 ...

Read More
Mixed Hemi-Micelle Solid-Phase Extraction Based on ...

Farzaneh Shemirani. Farzaneh Shemirani. ... this was the first time a mixed hemimicelles SPE method based on Fe3O4 NPs magnetic separation had been used for the pretreatment of environmental water ...

Read More
Speciation of chromium in waters using dispersive micro ...

2020-3-24  Yousefi, S. M. Shemirani, F. Carbon nanotube-based magnetic bucky gels in developing dispersive solid-phase extraction: application in rapid speciation analysis of Cr(VI) and Cr(III) in water ...

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Dispersive magnetic solid phase extraction based on an ...

A novel, fast and efficient ionic liquid-based dispersive magnetic solid phase extraction (IL-D-SPE) method was developed and applied for preconcentration of Cd(II) (as a model analyte) from aqueous solutions as a prior step to its determination by flame atomic

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Magnetic [email protected] acid

2021-8-31  Magnetic nanohybrid ZnFe 2 O 4 ABSTRACT How to cite this article: Hossein Beyki M , Shemirani F, Magnetic ZnFe 2 O 4 @polyhydroxybenzoic acid nanostructure for efficient B.subtilis capturing. Nanomed Res J, 2017; 2(3):165-170. DOI: 10.22034/nmrj.2017.03.004 INTRODUCTION Pathogenic microorganisms are in the spotlight of health care field.

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Graphene oxide magnetic nanocomposites for the ...

In this work, a graphene oxide magnetic nanocomposite (GO/Fe 3 O 4) was prepared and used as an effective adsorbent for the magnetic solid-phase extraction of trace quantities of malachite green from fish and water samples.This method, which takes advantage

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Enhanced headspace single drop microextraction method ...

2017-11-30  A facile headspace single drop microextraction method was developed using deep eutectic solvent‐based magnetic bucky gel as the extraction solvent for the first time. The hydrophobic magnetic bucky gel was formed by combining choline chloride/chlorophenol deep eutectic solvent and magnetic multiwalled carbon nanotube nanocomposite.

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Dispersive solid phase extraction of lead(II) using a ...

2014-4-24  The silica-coated magnetic nanoparticles (SCMNPs) were collected simply in few seconds by using a strong neodymium- iron- boron (Nd 2 Fe 12 B) magnet (1.31 T) for magnetic separation and were thoroughly redispersed and washed with deionized water three times and then dried, yielding nanoparticles a fine powder.

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(PDF) Development of a selective and pH-independent

Nitrite measurement has already been done with magnetic multi-wall CNT (MMWCNT) in our research group (Daneshvar Tarigh Shemirani, 2014). GO is the single layer and special two-dimensional ...

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Ultrasound-assisted surfactant-enhanced emulsification ...

2018-8-1  Magnetic ILs (MILs) are a subclass of ILs which favorably combine the excellent properties of conventional IL with magnetic property (Clark et al., 2016, Yu et al., 2016). These properties give MILs more advantages and potential application prospects than conventional solvents in separation processes.

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Farzaneh SHEMIRANI University of Tehran, Tehran UT ...

Farzaneh Shemirani. A magnetic solid phase extraction method is presented to preconcentrate Pb (II), Cd (II), Ni (II) and Zn (II) simultaneously. The adsorbent (mMoS2-CS), consisting of Fe3O4 ...

Read More
Magnetically Separable Fe3O4/TiO2 Hollow Spheres ...

2019-12-12  These magnetic TiO2 composites with hollow nature exhibit good photocatalytic activity under UV light irradiation and can be recycled six times by magnetic separation without major loss of activity. This method can be further applied to synthesize other bifunctional hollow spheres, such as Fe3O4/SnO2 and Fe3O4/CdS.

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Molecules Free Full-Text Sample Preparation Using ...

Aliyari, E.; Alvand, M.; Shemirani, F. Simultaneous separation and preconcentration of lead and cadmium from water and vegetable samples using a diethylenetriamine-modified magnetic graphene oxide nanocomposite. Anal. Methods 2015, 7, 7582–7589.

Read More
Ultrasound-assisted surfactant-enhanced emulsification ...

2018-8-1  Magnetic ILs (MILs) are a subclass of ILs which favorably combine the excellent properties of conventional IL with magnetic property (Clark et al., 2016, Yu et al., 2016). These properties give MILs more advantages and potential application prospects than conventional solvents in separation processes.

Read More
(PDF) Development of a selective and pH-independent

Nitrite measurement has already been done with magnetic multi-wall CNT (MMWCNT) in our research group (Daneshvar Tarigh Shemirani, 2014). GO is the single layer and special two-dimensional ...

Read More
Analytical Applications of Functionalized Magnetic ...

Magnetic separation technology (MST) was introduced first in 1909 to isolate iron from ore. 32 Several decades later, magnetic separation was established as a powerful separation technique in bio-separation, ... S. M. Yousefi, F. Shemirani and S. A. Ghorbanian, ...

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Graphene oxide magnetic nanocomposites for the ...

In this work, a graphene oxide magnetic nanocomposite (GO/Fe 3 O 4) was prepared and used as an effective adsorbent for the magnetic solid-phase extraction of trace quantities of malachite green from fish and water samples.This method, which takes advantage

Read More
Mixed hemi-micelle solid-phase extraction based on ...

Mixed hemi-micelle solid-phase extraction based on modified magnetic nanoparticles for extraction of cadmium and lead from food and water samples. Farahani MD, Shemirani F. A simple and rapid method for the separation and preconcentration of trace amounts of Cd(ll) and Pb(ll) in milk powder and water samples by magnetic SPE has been developed.

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Adsorption of Cr(VI) in wastewater using magnetic multi ...

2015-7-1  The effect of adsorbent dosage on Cr(VI) adsorption was investigated with adsorbent dosages of 0.01, 0.02, 0.05, 0.08, 0.1, and 0.2 g in 100 mL of chromate solution with a concentration of 2 mgL −1 at 303 K. It can be seen in Fig. 3 that the adsorption efficiency (E) increased from 47.35% to 100% when the dosage of magnetic MWCNTs increased from 0.01 to 0.1 g.

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Porous ionic liquid polymer: A reusable adsorbent with ...

2019-7-31  Beyki, M. H., Bayat, M. Shemirani, F. Fabrication of core–shell structured magnetic nanocellulose base polymeric ionic liquid for effective biosorption of Congo red dye. Bioresour.

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