NDLI: Supported hydrophobic ionic liquid on magnetic nanoparticles as a new sorbent for separation and preconcentration of lead and cadmium in milk and water samples

Content Provider	Springer Nature Link
Author	Davudabadi Farahani, Malihe Shemirani, Farzaneh
Copyright Year	2012
Abstract	We have prepared a highly selective and efficient sorbent for the simultaneous separation and preconcentration of lead and cadmium ions from milk and water samples. An ionic liquid was deposited on the surface of magnetic nanoparticles (IL-MNPs) and used for solid phase extraction of these ions. The IL-MNPs carrying the target metals were then separated from the sample solution by applying an external magnetic field. Lead and cadmium were almost quantitatively retained by the IL-MNPs, and then eluted with nitric acid. The effect of different variables on solid phase extraction was investigated. The calibration curve is linear in the range from 0.3 to 20 ng mL−1 of Cd(II), and from 5 to 330 ng mL−1 of Pb(II) in the initial solution. Under optimum conditions, the detection limits are 1.61 and 0.122 μg L-1 for Pb(II) and Cd(II) respectively. Relative standard deviations (n = 10) were 2.87 % and 1.45 % for 0.05 μg mL-1 and 0.2 μg mL-1 of Cd (II) and Pb (II) respectively. The preconcentration factor is 200 for both of ions. Figure A novel, highly selective and efficient sorbent, was prepared and applied for separation and preconcentration of lead and cadmium from real samples. Lead and cadmium could be quantitatively retained by ionic liquid-modified magnetite nanoparticles and then easily separated from the aqueous solution by applying an external magnetic field; so, no filtration or centrifugation was necessary.
Starting Page	219
Ending Page	226
Page Count	8
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	179
Issue Number	3-4
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2012-09-02
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ionic liquids Solid phase extraction Magnetic nanoparticles Cadmium Lead Analytical Chemistry Characterization and Evaluation of Materials Nanotechnology Microengineering Nanochemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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