Silica-modified magnetic nanoparticles functionalized with cetylpyridinium bromide for the preconcentration of metals after complexation with 8-hydroxyquinoline
Φόρτωση...
Ημερομηνία
Συγγραφείς
Karatapanis, A. E.
Fiamegos, Y.
Stalikas, C. D.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Elsevier
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Talanta
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Magnetically driven separation technology has received considerable attention in recent decade for its great potential application. In this study, we investigate the application of silica-modified magnetite nanoparticles (NPs) coated with a cationic surfactant as adsorbent for microextraction and determination of trace amounts of Cu(II), Ni(II), Co(II), Cd(II), Pb(II) and Mn(II) from environmental water samples. The synthesized silica-coated NPs in combination with cetylpyridinium bromide have the ability to adsolubilize the metal ions after complexation with 8-hydroxyquinoline. The NPs bearing the target metals are easily separated from the aqueous solution by applying an external magnetic field and the complexed metals were desorbed using acidic methanol. The desorbed analytes are introduced into the graphite furnace of an atomic absorption spectrometer. The effect of pH, complexing agent, amount of cetylpyridinium bromide. microextraction time, desorption conditions, ionic strength on extraction efficiency of the metal ions are investigated and optimized. Under the optimized conditions, the detection limits for Cu(II), Ni(II), Co(II), Cd(II), Pb(II) and Mn(II) are 4.7, 9.1, 9.5, 2.3, 7.4 and 15.3 ng L(-1), respectively and the relative standard deviations (n = 6) are less than 3.6%. The accuracy of the method was evaluated by recovery measurements on the spiked samples and good recoveries (93-113%) with low RSDs were achieved.
Περιγραφή
Λέξεις-κλειδιά
magnetic nanoparticles, 8-hydroxyquinoline, cetylpyridinium bromide, microextraction of metals, atomic absorption spectrometry, environmental water samples, solid-phase extraction, maghemite nanoparticles, cationic surfactants, phenolic-compounds, waste-water, chromatography, spectrometry, adsorption, removal
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000290187200035
http://ac.els-cdn.com/S0039914011001445/1-s2.0-S0039914011001445-main.pdf?_tid=ed620c5f99a58960af347c6c5ee8a479&acdnat=1333040806_929cc42ce7b2a761444a71841750ccb9
http://ac.els-cdn.com/S0039914011001445/1-s2.0-S0039914011001445-main.pdf?_tid=ed620c5f99a58960af347c6c5ee8a479&acdnat=1333040806_929cc42ce7b2a761444a71841750ccb9
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας