Add time:08/08/2019 Source:sciencedirect.com
Gallic acid was immobilized on AMBERLITE XAD-16 (cas 104219-63-8) by coupling it through –NN group. The resulting chelating resin AmberliteXAD-16 gallic acid, characterized by thermogravimetric analysis (TGA), infrared (IR) spectra and BET analysis, was used to preconcentrate Cr(III), Mn(II),Fe(III),Co(II), Ni(II) and Cu(II)ions. The resin was employed for the preconcentration of the metal ions present in river water and industrial area aqueous samples. Several parameters like effect of pH, effect of time, effect of sample volume and flow rate of sample were investigated. The sorption capacities for the resin were 216 μmol g−1, 180 μmol g−1, 403 μmol g−1, 281 μmol g−1, 250 μmol g−1 and 344 μmol g−1 for Cr(III), Mn(II), Fe(III), Co(II), Ni(II) and Cu(II) respectively. The preconcentration factors for Cr(III), Mn(II),Fe(III),Ni(II),Co(II) and Cu(II) were found out to be 300, 200, 400, 285.7, 300 and 400 respectively. The effect of various interfering ions was also studied. Results were validated by using standard addition method for river water sample.
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