Journal
MICROCHIMICA ACTA
Volume 181, Issue 5-6, Pages 597-605Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-013-1154-9
Keywords
Magnetic multiwalled carbon nanotube composite; Heavy metal ions; Sorption; Response surface methodology; Box-Behnken design
Categories
Ask authors/readers for more resources
We report that magnetic multiwalled carbon nanotubes functionalized with 8-aminoquinoline can be applied to the preconcentration of Cd(II), Pb(II) and Ni(II) ions. The parameters affecting preconcentration were optimized by a Box-Behnken design through response surface methodology. Three variables (extraction time, magnetic sorbent amount, and pH value) were selected as the main factors affecting sorption, and four variables (type, volume and concentration of the eluent; elution time) were selected for optimizing elution. Following sorption and elution, the ions were quantified by FAAS. The LODs are 0.09, 0.72, and 1.0 ng mL(-1) for Cd(II), Ni(II), and Pb(II) ions, respectively. The relative standard deviations are < 5.1 % for five separate batch determinations at 30 ng mL(-1) level of Cd(II), Ni(II), and Pb(II) ions. The sorption capacities (in mg g(-1)) of this new sorbent are 201 for Cd(II), 150 for Pb(II), and 172 Ni(II). The composite was successfully applied to the rapid extraction of trace quantities of heavy metal ions in fish, sediment, soil, and water samples.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available