Jump to main content
Jump to site search

Issue 12, 2018
Previous Article Next Article

Preconcentration and ultra-trace determination of hexavalent chromium ions using tailor-made polymer nanoparticles coupled with graphite furnace atomic absorption spectrometry: ultrasonic assisted-dispersive solid-phase extraction

Author affiliations

Abstract

We describe ultrasonic assisted-dispersive solid-phase extraction based on tailor-made polymer (UA-DSPE-TMP) nanoparticles for selective extraction of Cr(VI) ions. Ultrasound is a robust method to facilitate extraction of target ions in the sorption step and elution of target ions in the desorption step. The TMP nanoparticles used in UA-DSPE-TMP were prepared by precipitation polymerization. TMP nanoparticles were synthesized using methacrylic acid as a functional monomer, ethylene glycol dimethacrylate as a crosslinker, 2,2′-azobisisobutyronitrile as an initiator, 1,5-diphenylcarbazide as a ligand, methanol as the solvent, and Cr(VI) as a template ion, through a precipitation polymerization technique. TMP nanoparticles were characterized by Fourier-transformed infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy (SEM), elemental analyses and energy-dispersive X-ray spectroscopy. The effect of influencing parameters on extraction of Cr(VI) by the prepared TMP nanoparticles was evaluated and optimized. The optimum conditions for the method were: pH of solution = 1.0; sonication time for sorption = 10 min; TMP amount = 10 mg; type and concentration of eluent: NaOH/EDTA 0.5/0.1 mol L−1; volume of eluent = 200 μL; sonication time for desorption = 2 min. Under the optimized conditions, the limit of detection and relative standard deviation for the detection of Cr(VI) by the method was 8.0 ng L−1 and <7%, respectively.

Graphical abstract: Preconcentration and ultra-trace determination of hexavalent chromium ions using tailor-made polymer nanoparticles coupled with graphite furnace atomic absorption spectrometry: ultrasonic assisted-dispersive solid-phase extraction

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Apr 2018, accepted on 12 May 2018 and first published on 14 May 2018


Article type: Paper
DOI: 10.1039/C8NJ01608A
Citation: New J. Chem., 2018,42, 10357-10365
  •   Request permissions

    Preconcentration and ultra-trace determination of hexavalent chromium ions using tailor-made polymer nanoparticles coupled with graphite furnace atomic absorption spectrometry: ultrasonic assisted-dispersive solid-phase extraction

    S. Parvizi, M. Behbahani, F. zeraatpisheh and A. Esrafili, New J. Chem., 2018, 42, 10357
    DOI: 10.1039/C8NJ01608A

Search articles by author

Spotlight

Advertisements