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http://hdl.handle.net/2074/755
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| Title: | Amberlite XAD-2 functionalized with o-aminophenol: synthesis and applications as extractant for copper(II), cobalt(II), cadmium(II), nickel(II), zinc(II) and lead(II) |
| Authors: | Manjeet Kumar
Rathore, D P S
Singh, Ajai K |
| Keywords: | Amberlite XAD-2
o-Aminophenol
Atomic absorption spectrometry
Copper
Cadmium
Cobalt
Nickel
Zinc
Lead
Preconcentration
Water analysis |
| Issue Date: | 2000 |
| Citation: | Talanta, 51(6), 1187–1196 |
| Abstract: | A stable chelating resin matrix was synthesized by covalently linking o-aminophenol (o-AP) with the benzene ring
of the polystyrene–divinylbenzene resin, Amberlite XAD-2, through a –N=N– group. Elemental analyses, thermogravimetric
analysis (TGA) and infrared spectra have characterized the resulting chelating resin. It has been used to preconcentrate Cu2+, Cd2+, Co2+, Ni2+, Zn2+ and Pb2+, prior to their determination by flame atomic absorption spectrometry. The optimum pH values for quantitative sorption of Cu, Cd, Co, Ni, Zn and Pb are 6.2–7.4, 5.6–7.2, 5.6–9.0, 6.0–9.0, 5.7–7.0 and 5.0–6.0, respectively. These metals are desorbed (recovery 91–98%) with 4 mol dm-3 HNO3. The orption capacity of the resin is 3.37, 3.42, 3.29, 3.24, 2.94 and 3.32 mg of metal g-1 of resin, respectively, for Cu, Cd, Co, Ni, Zn and Pb. The effect of NaF, NaCl, NaNO3, Na2SO4, and Na3PO4 on the sorption of these metal ions has been investigated. These electrolytes are tolerable up to 0.01 mol dm-3 in case o... |
| URI: | http://eprint.iitd.ac.in/dspace/handle/2074/755 |
| Appears in Collections: | Chemistry
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| kumaramb2000.pdf | | 271Kb | Adobe PDF | View/Open |
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