Β-Cyclodextrin-Cross-Linked Polymer Microcolumn Dynamic Preconcentration/analysis for Trace Cadium

Abstract:

The adsorptive capability of β-Cyclodextrin-cross-linked polymer(β-CDCP) for cadmium was assessed in this work using column method. It was found that the complex (Cd(II)-5-Br-PADAP) could be quantitatively retained on the β-CDCP in the pH 8.5, eluted completely with 1.5 mol×L^-1 HCl. Under the optimum conditions, the linear range, detection limit (DL) and the relative standard deviation (R.S.D.) was 2.0-60.0 μg×L^-1, 7.8 ng×L^-1 and 2.20% (n=3, c=20.0 μg×L^-1) respectively. The separation of Cd(II) was achieved from water samples with an enhancement factor of 20. Moreover, the β-CDCP could be used repeatedly and offered better recovery. The method was validated using a certified reference material, and applied for the determination of trace cadmium in water samples.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 82-86
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.82
• Online since: July 2011
• Authors: Xia Shi Zhu, Ying Gu, Ting Ting Hou
• Keywords: Cadmium (Cd), Graphite Furnace Atomic Absorption Spectrometry, Microcolumn, Solid-Phase Extraction (SPE), β-Cyclodextrin Cross-Linked Polymer

References

[1] X. S. Zhu, M.Wu and Y.Gu: Talanta. Vol.78 (2009), p.565.

[2] X. S. Zhu, M Wu., J. Sun and X.F. Zhang: Anal. Lett. Vol. 41(2008), p.2186.

[3] O.M. Kalfa, Ö.Yalcınkaya and A.R. Türker: J. Hazard. Mater. Vol. 166(2009), p.455.

[4] P. Liang, Y.C. Qin, B. Hu, T.Y Peng and Z.C. Jiang: Anal. Chim. Acta. Vol. 440, (2001) p.207.