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Characterization of a chelating resin functionalized via azo spacer and its analytical applicability for the determination of trace metal ions in real matrices
Author(s) -
Islam Aminul,
Ahmad Akil,
Laskar Mohammad Asaduddin
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34844
Subject(s) - amberlite , chelating resin , detection limit , metal ions in aqueous solution , chemistry , sorption , chelation , certified reference materials , elution , nuclear chemistry , atomic absorption spectroscopy , metal , tap water , trace amounts , inorganic chemistry , chromatography , adsorption , physics , organic chemistry , quantum mechanics , environmental engineering , engineering , medicine , alternative medicine , pathology
A selective flame atomic absorption spectrometric method has been developed for the determination of trace amount of metal ions after preconcentration on salicylic acid (SA) loaded Amberlite XAD‐4 resin (AXAD‐4) at suitable pH. The chelating resin AXAD‐4‐SA was characterized based on FTIR, thermal and chemical stability, and hydrogen ion capacity. The sorption capacity was found to be 245.0, 156.2, 155.0, 145.0, 125.0, 122.5, and 70 μmol g −1 for Cu(II), Cr(III), Zn(II), Cd(II), Mn(II), Ni(II), and Co(II), respectively with t 1/2 <15 min. All the metals could be eluted by 5 mL of 4 mol L −1 HCl/HNO 3 resulting in high preconcentration factor of 200–360 up to a low preconcentration limit of 5.5–10 μg L −1 . The accuracy and precision of the developed method was checked by analyzing standard reference materials. The experimental values were not statistically significant from the certified values with <5% RSD. The detection limits were found to be 0.42, 0.57, 0.63, 0.77, 0.94, 0.96, and 1.41 μg L −1 , respectively. The analytical utility of the AXAD‐4‐SA for preconcentration and determination of metal ions was explored by analyzing river, canal, sewage, and tap water by direct as well as standard addition method. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012