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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Matussek, Marek Hachuła, Barbara Pilch, Michał Kozik, Violetta Pytlakowska, Katarzyna Kocot, Karina |
| Copyright Year | 2016 |
| Abstract | A novel and selective sorbent for micro-solid phase extraction was synthesized by chemical functionalization of graphene oxide with glycine. The structure of this nanomaterial, referred to as GO-Gly, was confirmed by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. GO-Gly was used for preconcentration of chromium, zinc, and copper ions from water samples prior to their determination by energy dispersive X-ray fluorescence spectrometry (EDXRF). The proposed procedure is based on dispersion of micro amounts of GO-Gly in aqueous samples. After adsorption of metal ions on its surface, samples were filtered under vacuum and then membrane filters were directly submitted to energy dispersive X-ray fluorescence spectrometric measurements. In order to obtain optimal preconcentration conditions, some parameters affecting sorption process, such as pH, amount of GO-Gly, sorption times, and sample volume, were examined. Under optimal conditions the calibration curves were linear in a 1–150 ng mL−1 range with recoveries higher than 97%. The obtained detection limits for Cr(III), Zn(II), and Cu(II) determinations are 0.15, 0.07, and 0.08 ng mL−1, respectively. A relative standard deviation of the proposed procedure (at a 10 ng mL−1 level for n = 10) is lower than 2.3%. The proposed method was successfully applied for determination of Cr(III), Zn(II), and Cu(II) ions in water samples. |
| Starting Page | 42836 |
| Ending Page | 42844 |
| Page Count | 9 |
| File Format | HTM / HTML PDF |
| ISSN | 20462069 |
| Volume Number | 6 |
| Issue Number | 49 |
| Journal | RSC Advances |
| DOI | 10.1039/c6ra03662g |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Infrared spectroscopy Photoemission spectroscopy Glycine Scanning electron microscope Coefficient of variation Zinc Membrane technology Sorption Statistical dispersion X-ray fluorescence Fourier Adsorption Graphene Chromium Copper X-ray photoelectron spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
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