Separation and preconcentration of trace amounts of cadmium(II) and mercury(II) ions on rosaniline-grafted polyurethane foam

• Autorzy: Moawed E. A.
• Języki publikacji: EN

Abstrakty

EN

Rosaniline-grafted polyurethane foam (Ros-PUF) has been synthe-sized, by coupling polyether polyol, rosaniline, and toluene diisocyanate, and characterized, by use of UV–visible and IR spectroscopy and thermo-gravimetric analysis. The Ros-PUF was used as a new sorbent for extraction of trace amounts of Cd(II) and Hg(II) from water by batch and column techniques. Cd(II) and Hg(II) were completely separated from 2–6 M HCl solution containing 1 M KSCN in 10–20 min. The kinetics and thermody-namics of sorption of the metal ions by Ros-PUF were studied. The average values of ΔH, ΔS, and ΔG for sorption of Cd(II) and Hg(II) by Ros-PUF were -54.38 kJ mol-1, 159 J K-1 mol-1, and –4.87 kJ mol-1, respectively. The Dubinin–Radushkevich equation was used to explain the equilibrium isotherm. The sorption capacities of Ros-PUF were 0.12 and 0. 08 mmol g-1 for Cd(II) and Hg(II), respectively. The method has been successfully used to preconcentrate and remove Cd(II) and Hg(II) from tap water. Precon-centration factors were ~100 and recoveries were between 86.6 and 100% (average RSD . 5.74).

• Wydawca: University of Silesia in Katowice ; Akademiai Kiado
• Czasopismo: Acta Chromatographica
• Rocznik: 2004
• Tom: No. 14
• Strony: 198--214
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Moawed E. A.

• Chemistry Department, Faculty of Science at Damietta, Mansoura University, Damietta, Egypt

Bibliografia

• [1] V.K. Jain, S.S. Sait, P. Shrivastav, and Y.K. Agrawal, Talanta, 45, 397 (1997)
• [2] S. Blain, P. Appriou, H. Chaumeil, and H. Handel, Anal. Chim. Acta, 232, 331 (1990)
• [3] R. Shah and S. Devi Analyst, 121, 807 (1996)
• [4] H. Emteborg, D.C. Baxter, M. Sharp, and W. Frech, Analyst, 120, 69 (1995)
• [5] T. Braun, J.D. Navratil, and A.B. Farag, Polyurethane Foam Sorbents in Separation Science, CRC Press, Boca Raton, Florida, 1985
• [6] A.B. Farag, A.M. Helmy, and M.S. El-Shahawi, Analyst, 17, 487 (1989)
• [7] P. Fong and A. Chow, Talanta, 39, 825 (1992)
• [8] S. Arpadjan, L. Vuchkova, and E. Kostadinova, Analyst, 122, 243 (1997)
• [9] I.A. Veselova and T.N. Shekhovtsova, Anal. Chim. Acta, 392, 151 (2000)
• [10] A. Ramesh, K.R. Mohan, K. Seshaiah, and N.D. Jeyakumar, Anal. Lett, 34, 219 (2001)
• [11] M.S. El-Shahawi and H.A. Nassif, Anal. Chim. Acta, 481, 29 (2003)
• [12] M.F. El-Shahat, E.A. Moawed, and M.A.A. Zaid, Anal. Bioanal. Chem., 378, 470 (2004)
• [13] M.F. El-Shahat, E.A. Moawed, and M.A.A. Zaid, Talanta, 59, 851 (2003)
• [14] E.A. Moawed, M.A.A. Zaid, and M.F. El-Shahat, Anal. Lett., 36, 405 (2003)
• [15] M.M. Saeed, A. Rusheed, M. Ahmed, and J. Tolgyessy, Sep. Sci. Technol., 29, 2143 (1994)
• [16] S.M. Hasany, M.M. Saeed, and M. Ahmed, Sep. Sci. Technol., 35, 379 (2000)
• [17] S.M. Hasany, M.M. Saeed, and M. Ahmed, Talanta, 54, 89 (2001)
• [18] H.J.M. Bowen, J. Chem. Soc. A, 1082 (1970)
• [19] T.C. Huang, D.H. Chen, M.C. Shieh, and C.T. Huang, Sep. Sci. Technol., 27, 1619 (1992)
• [20] R.F. Hamon, A.S. Khan, and A. Chow, Talanta, 29, 313 (1982)
• [21] S.J. Al-Bazi and A. Chow, Talanta, 30, 487 (1983)
• [22] S.G. Dmitrienko, O.A. Sviridova, L.N. Pyatkova, V.A. Zhukova, and Y.A. Zolotov, Anal. Chim. Acta, 405, 231 (2000)
• [23] S.G. Dmitrienko, O.A. Sviridova, L.N. Pyatkova, and V.M. Senyavin, Anal. Bioanal. Chem., 374, 361 (2002)