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Spherical agarose-coated magnetic nanoparticles functionalized with a new salen for magnetic solid-phase extraction of uranyl ion

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Abstract

The authors describe a method for magnetic solid phase extraction of uranyl ions from water samples. It is based on the use of spherical agarose-coated magnetic nanoparticles along with magnetic field agitation. The salen type Schiff base N,N’-bis(4-hydroxysalicylidene)-1,2-phenylenediamine was synthesized from resorcinol in two steps and characterized by infrared and nucleic magnetic resonance spectroscopies. The particles were then activated by an epichlorohydrin method and functionalized with the Schiff base which acts as a selective ligand for the extraction of UO2(II). Following preconcentration and elution with HCl, the ions were quantified by spectrophotometry using Arsenazo III as the indicator. The effects of pH value, ionic strength and amount of the adsorbent on the extraction of UO2(II) were optimized by a multivariate central composite design method. Six replicate analyses under optimized conditions resulted in a recovery of 96.6 % with a relative standard deviation of 3.4 % for UO2(II). The detection limit of the method (at a signal-to-noise ratio of 3σ) is 10 μg L‾1. The method was successfully applied to the determination of UO2(II) in spiked water samples.

Spherical agarose-coated magnetic nanoparticles (SACMNPs) were prepared in the presence of Span 85 (a nonionic surfactant) and functionalized by a salen type Schiff base for magnetic solid-phase extraction of uranyl ion

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Lorestan University, Khoramabad, Iran

    Fariba Nazari Serenjeh, Payman Hashemi & Ali Reza Ghiasvand

  2. Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, 87317, Iran

    Hossein Naeimi & Elham Zakerzadeh

Authors
  1. Fariba Nazari Serenjeh
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  2. Payman Hashemi
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  3. Hossein Naeimi
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  4. Elham Zakerzadeh
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  5. Ali Reza Ghiasvand
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Correspondence to Payman Hashemi.

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Nazari Serenjeh, F., Hashemi, P., Naeimi, H. et al. Spherical agarose-coated magnetic nanoparticles functionalized with a new salen for magnetic solid-phase extraction of uranyl ion. Microchim Acta 183, 2449–2455 (2016). https://doi.org/10.1007/s00604-016-1882-8

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