Amberlite XAD-1180

• CAS: 97396-56-0
• Catalog Number: ACM97396560
• Category: Main Products

Case Study

Application of Amberlite XAD-1180 in Trace Metal Determination via FAAS

Yilmaz, Vedat, et al. Analytical sciences, 2012, 28(5), 515-521.

This research demonstrated the creation of a new chelating resin by attaching 1-(2-thiazolylazo)-2-naphthol (TAN) to Amberlite XAD-1180 via a diazo (-N=N-) bond. This resin shows outstanding performance in preconcentrating Cd(II), Co(II), Cu(II), Mn(II), Ni(II), and Pb(II) ions to enable their determination through flame atomic absorption spectrometry (FAAS).
The AXAD-1180/TAN resin shows outstanding analytical performance through detection limits between 0.1-3.6 μg L-1, sorption capacity ranging from 157-381 μmol g-1 enrichment factors of 50-300 and maintains stability after 200 cycles of sorption-desorption with minimal recovery efficiency loss.
Synthesis Procedure
Researchers introduced Amberlite XAD-1180 (5 g) into a stirred solution containing concentrated HNO3 (10 mL) and H2SO4 (25 mL) before heating at 60°C for one hour followed by quenching in ice-water and filtering the mixture. The nitrated resin was washed until acid-free and reduced using SnCl2 (40 g), HCl (45 mL), and ethanol (50 mL) at 90°C for 12 h under reflux. The aminated resin was washed sequentially with water, NaOH (2 mol L-1), HCl (2 mol L-1), and water again.
After chilling in ice-water, the resin received treatment with HCl (1 mol L-1, 100 mL) and NaNO2 (1 mol L-1, 75 mL) at 0-5°C for diazotization before being filtered and washed rapidly. The diazotized resin underwent coupling with TAN which was prepared by dissolving 5 g in 100 mL of 10% methanolic NaOH at 0-5°C for 24 hours. After air drying the final brown resin it was stored inside a desiccator.

Amberlite XAD-1180 for Selective Recovery of Precious Metals

Navarro, R., et al. Gold Bulletin, 2017, 50, 7-23.

Amberlite XAD-1180 was impregnated with Cyphos IL101 (trihexyl (tetradecyl) phosphine chloride ionic liquid, IL), which made the resin show efficient extraction performance for Au(III), Pd(II) and Pt(IV) in high concentration HCl solution. The study found that the extractant impregnated resin (EIR) has better selectivity for precious metals (PGM) than base metals (BM), and the selection of appropriate eluents (HCl, HNO3, acidic thiourea) can almost selectively recover the three metals in pure or highly concentrated proportions.
Resin Impregnation Process
The ionic liquid (IL) was immobilized onto the resin using a dry impregnation technique. Initially, 5 grams of conditioned Amberlite XAD-1180 resin was combined with 25 milliliters of acetone and allowed to mix for 24 hours. Subsequently, various quantities of Cyphos IL101, diluted to a concentration of 0.5 M in acetone, were added to the resin slurry, which was agitated for an additional 24 hours. The acetone solvent was then gradually removed through evaporation using a rotary evaporator. Five different EIRs were synthesized with IL loadings from 100 to 592 mg per gram of resin.
The washing procedure enabled researchers to determine the immobilized extractant quantity on the resin (q_IL). A predetermined weight of the impregnated resin (250 mg) was combined with 5 milliliters of methanol for 24 hours to dissolve the IL, after which the solvent was separated from the resin by decantation. This washing process was repeated twice. Finally, the resin was dried at 50 °C for 24 hours to ensure complete solvent evaporation. The mass difference (M_IL) between the impregnated resin (M_XAD/IL) and the washed resin (M_XAD) was used to determine the quantity of extractant immobilized in the EIR, calculated as qIL = (M_XAD/IL - M_XAD) / (M_XAD/IL).