Open AccessDetermination of silver(I) by flame atomic absorption spectrometry after separation/preconcentration using modified magnetite nanoparticles
Author(s) -
Maryam Karimi,
Sayed Zia Mohammadi,
Alireza Mohadesi,
Abdolhamid Hatefi-Mehrjardi,
Mohammad Mazloum-Ardakani,
L. Sotudehnia Korani,
Asghar Askarpour Kabir
Publication year - 2011
Publication title -
scientia iranica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.299
H-Index - 51
eISSN - 2345-3605
pISSN - 1026-3098
DOI - 10.1016/j.scient.2011.06.008
Subject(s) - magnetite nanoparticles , magnetite , atomic absorption spectroscopy , materials science , nanoparticle , analytical chemistry (journal) , mass spectrometry , absorption (acoustics) , chemistry , chromatography , magnetic nanoparticles , nanotechnology , metallurgy , composite material , physics , quantum mechanics
A new, simple, fast and reliable method has been developed for the separation/preconcentration of trace amounts of silver ions using 2-mercaptobenzothiazole/sodium dodecyl sulfate immobilized on alumina-coated magnetite nanoparticles (MBT/SDS-ACMNPs) and their determination by flame atomic absorption spectrometry (FAAS). Optimal experimental conditions, including pH, sample volume, eluent concentration and volume, and co-existing ions, have been studied and established. Under optimal experimental conditions, the enrichment factor, detection limit, linear range and relative standard deviation (RSD) of Ag(I) ions were 250 (for 500 mL of sample solution), 0.56 ng mL−1, 2.0–100.0 ng mL−1 and 3.1% (for 5.0 μg mL−1, n=10), respectively. The presented procedure was successfully applied for determination of silver content in the different samples of water