Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
Volume 101, Issue 15, Pages 2742-2760Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03067319.2020.1711893
Keywords
Polydopamine; g-C3N4; adsorbent; Cu(II); Pb(II)
Categories
Funding
- Semnan University Research Council
Ask authors/readers for more resources
A new nanocomposite was successfully synthesized by modifying nanosheets of graphitic carbon nitride with polydopamine, which was used for the extraction and preconcentration of Pb(II) and Cu(II) ions. Optimized experimental conditions resulted in low detection limits and stable extraction recoveries.
A new nanocomposite was successfully synthesised by modifying nanosheets of graphitic carbon nitride with polydopamine (g-C3N4-PDA) and used for the extraction and preconcentration of the Pb(II) and Cu(II) ions, using the effervescent-assisted dispersive micro solid-phase method, before their determination by micro sampling-flame atomic absorption spectrometry. The structure of the g-C3N4-PDA composite was corroborated by the Fourier-transform infrared spectroscopy, X-Ray diffraction and scanning electron microscopy analyses. Due to the effervescence of carbon dioxide in the sample solution, dispersion of the adsorbent occurred in a very short time and led to an increase in the interactions between the composite and the analytes. As a result, the extraction recoveries were increased in the shortest possible time period. The effective parameters were optimised via the central composite experimental design (CCD). Under the optimised experimental conditions, the limits of detection (LOD) were obtained to be 0.16 and 0.06 mu g/L for the Pb(II) and Cu(II) ions, respectively, and the linear dynamic range extended from 0.2 to 30 mu g/L. Also, the relative standard deviations (RSD, n = 3) were obtained to be 1.1% and 1.2% for Pb(II) and Cu(II), respectively. In addition, according to the result obtained, the adsorbent could be reused for 8 times with negligible changes in the extraction recoveries.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available