Extraction and Preconcentration of Trace Amounts of Mercury Using Functionalized Magnetic-Nanoparticles Prior to Their Determination by UV-Vis Spectrophotometry

Shafieekhani, Homa; Moadelli, Ali; Aminipour, Firoozeh

doi:10.30473/ijac.2019.43981.1138

Document Type : Full research article

Authors

¹ Chemistry Department, Payame Noor University, P.O. BOX 19395-4697, Tehran, Iran

² Legal medicine organization, Tehran, Iran

³ Islamic Azad University, Lamerd Branch, P.O.Box: 74341-553881, Fars, Iran

https://doi.org/10.30473/ijac.2019.43981.1138

Abstract

In this paper, magnetic nanoparticles functionalized by triazene ligand were prepared for extraction/preconcentration of trace amounts of mercury ions in water samples former on its determination with UV-Vis spectrophotometry. The modified magnetic nanoparticles were characterized by the various techniques such as Scanning Electron Microscope (SEM), Transmission Electron Microscopy (TEM) and X –Ray Diffractometry (XRD). In the separation process, aqueous solution of Hg²⁺ ion was mixed with Fe₃O₄ magnetite nanoparticles modified with (E)-1-(2-Ethoxyphenyl)-3-(4-nitrophenyl)triaze-1-ene (ENT), (MNPs@SiO₂-ENT) and then external magnetic field was applied for isolation of magnetite nanoparticles containing mercury ions. Experimental conditions for effective adsorption including pH, ENT amount, Fe₃O₄ NPs amounts, and eluent type have been studied and established. Under the optimal extraction and preconcentration conditions, calibration curve was linear in the range of 4–80 µgL^-1 with r² = 0.9992 (n=20), the limit of detection (LOD) 1.05µg L^-1and enrichment factor was 38, respectively. This technique was successfully used for the determination of Hg (II) in aqueous samples.

Keywords

20.1001.1.23832207.2019.6.1.4.8

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Iranian Journal of Analytical Chemistry

Extraction and Preconcentration of Trace Amounts of Mercury Using Functionalized Magnetic-Nanoparticles Prior to Their Determination by UV-Vis Spectrophotometry

References

References

Volume 6, Issue 1 - Serial Number 11
March 2019
Pages 31-37

Extraction and Preconcentration of Trace Amounts of Mercury Using Functionalized Magnetic-Nanoparticles Prior to Their Determination by UV-Vis Spectrophotometry

References

References

Volume 6, Issue 1 - Serial Number 11March 2019Pages 31-37

Volume 6, Issue 1 - Serial Number 11
March 2019
Pages 31-37