http://hdl.handle.net/20.500.12128/13062
Tytuł: | Preconcentration of Fe(III), Co(II), Ni(II), Cu(II), Zn(II) and Pb(II) with ethylenediamine-modified graphene oxide |
Autor: | Zawisza, Beata Baranik, Anna Malicka, Ewa Talik, Ewa Sitko, Rafał |
Słowa kluczowe: | Modified graphene oxide; Scanning electron microscopy; Energy-dispersive spectrometry; Sorbent; Environmental analysis; Micro-solid phase extraction; X-ray fluorescence spectrometry |
Data wydania: | 2016 |
Źródło: | Microchimica Acta, Vol. 183, iss. 1 (2016), s. 231-240 |
Abstrakt: | We describe a novel solid phase sorbent that was synthesized by coupling graphene oxide (GO) to ethylenediamine (EDA). This nanomaterial (referred to as GO-EDA) is capable of adsorbing the ions of iron, cobalt, nickel, copper, zinc and lead. The ethylenediamine-modified graphene oxide was characterized by X-ray photoelectron spectroscopy, scanning electron microscopy and Fourier transform infrared spectroscopy. The analytical procedure relies on (a) sorption of metal ions on GO-EDA dispersed in aqueous samples; (b) filtering, and (c) direct submission of the filter paper to energy-dispersive X-ray fluorescence spectrometry. This kind of dispersive micro-solid phase extraction was optimized with respect to pH values, concentration of GO-EDA, contact time, and the effects of interfering ions and humic acid on recovery of determined elements. Under optimized conditions, the recoveries of spiked samples range from 90 to 98 %. The detection limits are 0.07, 0.10, 0.07, 0.08, 0.06 and 0.10 ng mL−1 for Fe(III), Co(II), Ni(II), Cu(II), Zn(II) and Pb(II), respectively. The method has a relative standard deviation of <6 %, and its accuracy was verified by analysis of two standard reference materials [LGC6016 (estuarine water) and BCR-610 (groundwater)]. It was successfully applied to the determination of trace amounts of these metal ions in water samples. |
URI: | http://hdl.handle.net/20.500.12128/13062 |
DOI: | 10.1007/s00604-015-1629-y |
ISSN: | 1436-5073 0026-3672 |
Pojawia się w kolekcji: | Artykuły (WNŚiT) |
Plik | Opis | Rozmiar | Format | |
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Zawisza_Preconcentration_of_Fe.pdf | 836,89 kB | Adobe PDF | Przejrzyj / Otwórz |
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