Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7689199 | TrAC Trends in Analytical Chemistry | 2015 | 6 Pages |
Abstract
A new solid-phase extraction sorbent was used for the separation/preconcentration of Ni(II) ions prior to their determination by flame atomic absorption spectrometry. It was prepared by immobilization of dithiooxamide on magnetic nanoparticles (MNPs) of magnetite (Fe3O4) coated with cationic surfactant sodium dodecyl sulfate. The properties of sorbent and MNPs were characterized by scanning electron microscope and transmission electron microscope. Some parameters affecting extraction, such as pH, adsorbent dosage, and eluent concentration and volume) were optimized. The calibration graph was linear in the range 30-5000âµg.Lâ1 with a limit of determination of 3.9âµg.Lâ1. The relative standard deviation for Ni ions was 1.3%. The method was applied to the determination of trace amounts of Ni(II) ions in water and food samples.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Ali Mirabi, Ali Shokuhi Rad, Samaneh Nourani,