10.1021/ie303300u.s002
Aminul Islam
Aminul
Islam
Hilal Ahmad
Hilal
Ahmad
Noushi Zaidi
Noushi
Zaidi
Sudesh Yadav
Sudesh
Yadav
Selective
Separation of Aluminum from Biological and
Environmental Samples Using Glyoxal-bis(2-hydroxyanil) Functionalized
Amberlite XAD-16 Resin: Kinetics and Equilibrium Studies
American Chemical Society
2013
binding site behavior
bind aluminum
dialysis fluid
Amberlite
r 2
XAD
pH 9.
Equilibrium data
resin
preconcentration
method
drinking water
monolayer sorption
analyte ratio
Scatchard plot analysis
SEM
test solutions
SRM
drink samples
scanning electron microscopy
reference materials
Equilibrium StudiesA
Langmuir adsorption isotherms
Environmental Samples
Selective Separation
Al
2013-04-10 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Selective_Separation_of_Aluminum_from_Biological_and_Environmental_Samples_Using_Glyoxal_bis_2_hydroxyanil_Functionalized_Amberlite_XAD_16_Resin_Kinetics_and_Equilibrium_Studies/2424904
A new glyoxal-bis(2-hydroxyanil)
anchored Amberlite XAD-16 chelating
resin was synthesized and characterized by elemental analyses and
scanning electron microscopy along with energy dispersive X-ray spectroscopy
(SEM/EDAX), infrared spectral, and thermal studies. The resin was
found to selectively bind aluminum in aqueous medium over a large
number of competitive cations, at pH 9. Experimental conditions, for
effective sorption of Al(III) were optimized systematically and were
found to have fast kinetics (<i>t</i><sub>1/2</sub> 10 min),
high preconcentration flow rate (5.0 mL min<sup>–1</sup>),
very high sorption capacity (24.28 mg g<sup>–1</sup>), regenerability
up to 66 sample loading/elution cycles, and low preconcentration limit
(3.3 ppb) from test solutions of different interferent to analyte
ratio. The chemisorption and identical, independent binding site behavior
were evaluated by Dubinin–Radushkevich isotherm and Scatchard
plot analysis. Equilibrium data fit well to Langmuir adsorption isotherms
(<i>r</i><sup>2</sup> = 0.998) indicating a typical monolayer
sorption. We confirmed the analytical reliability of the method by
the analysis of standard reference materials (SRMs), recovery experiments,
and precision expressed as coefficient of variation (<5%). The
applicability of the proposed method was demonstrated by preconcentration
of trace Al(III) in dialysis fluid, packaged drinking water, rum,
and soft drink samples.