Rattle-type FeO@SnO core-shell nanoparticles for dispersive solid-phase extraction of mercury ions
Microchimica Acta, ISSN: 1436-5073, Vol: 184, Issue: 3, Page: 707-713
2017
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- 20Captures
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Article Description
The synthesis of rattle-type nanostructured FeO@SnO is described along with their application to dispersive solid-phase extraction of trace amounts of mercury(II) ions prior to their determination by continuous-flow cold vapor atomic absorption spectrometry. The voids present in rattle-type structures make the material an effective substrate for adsorption of Hg(II), and also warrant high loading capacity. The unique morphology, large specific surface, magnetism property and the synergistic effect of magnetic cores and SnO shells render these magnetic nanorattles an attractive candidate for solid-phase extraction of heavy metal ions.The sorbent was characterized by transmission electron microscopy, scanning electron microscopy, FTIR, energy-dispersive X-ray spectroscopy and by the Brunnauer-Emmett-Teller technique. The effects of pH value, adsorption time, amount of sorbent, volume of sample solutions, concentration and volume of eluent on extraction efficiencies were evaluated. The calibration plot is linear in the 0.1 to 40 μg·L concentration range, and the preconcentration factor is 49. The detection limit is 28 ng·L. The sorbent was applied to the analysis of (spiked) river and sea water samples. Recoveries ranged from 97.2 to 100.5%. [Figure not available: see fulltext.]
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85006827088&origin=inward; http://dx.doi.org/10.1007/s00604-016-2059-1; http://link.springer.com/10.1007/s00604-016-2059-1; http://link.springer.com/content/pdf/10.1007/s00604-016-2059-1.pdf; http://link.springer.com/article/10.1007/s00604-016-2059-1/fulltext.html; https://dx.doi.org/10.1007/s00604-016-2059-1; https://link.springer.com/article/10.1007/s00604-016-2059-1
Springer Nature
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