Hajı Ali Mohammad SHABANI, Masoumeh TAEI, Seyyed Hamid AHMADI, Shayessteh DADFARNIA

On-line preconcentration and speciation of chromium by an 8-hidroxyquinoline microcolumn immobilized on surfactant-coated alumina and flow injection atomic absorption spectrometry

An on-line technique for the determination of chromium species with atomic absorption spectrometry is described. The method is based on separation and preconcentration of Cr(III) on a microcolumn of immobilized 8-hydroxyquinoline on surfactant-coated alumina. The adsorbed analyte is then eluted with 400 $mu L $of 20% ethanolic solution of 1.5 mol $L^{-1}$ hydrochloric acid and is transported to a flame atomic absorption spectrometer for quantification. The effects of pH, sample and eluent flow rate, sorption capacity, and the presence of various cations and anions on the sorption of Cr(III) were investigated. The sorption was quantitative in the pH 6-8 range, and for a sample volume of 35 mL a preconcentration factor of 98 was obtained. Total chromium was determined by efficient reduction of Cr(VI) to Cr(III) with hydroxylamine. The method was applied to the determination of chromium in electroplating wastewater samples.

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1. J. Kotaz and Z. Stasicka, Environment. Pollut. 107, 263-283 (2000).
2. R.A Andersen, Sci. Total Environ. 86, 75-81 (1989).
3. C.S. Gad, Sci. Total Environ. 86, 149-157 (1989).
4. M.J. Marques, A. Salvador, A. Morales-Rubio and M. de la Guardia, Fresenius J. Anal. Chem. 367, 601-613 (2000).
5. Q. Zhang, H. Minami, S. Inoue and I. Atsuya, Anal. Chim. Acta 401, 277-82 (1999).
6. K.S. Subramanian, Anal. Chem. 60, 11-15
7. E.K. Paleologos, C.D. Stalikas, S.M. Tzouwara-Karayanni and M.I. Karayannis, Anal. Chim. Acta 436,49-57 (2001).
8. C.A. Johnson, Anal Chim Acta 238, 273-278 (1990).
9. R.E. Sturgeon, S.S. Berman and S.N. Willie, Talanta 29, 167-171 (1982).
10. E. Vassileva and N. Furuta, Fresenius J. Anal. Chem. 370, 52-59 (2001).
11. Z. Fang, "Flow Injection Atomic Absorption Spectrometry", Wiley, Chichester, 1995.
12. J.F. Tyson, "FIA Techniques and Strategies Expand the Potential of Atomic Spectrometry", in Flow Analysis with Atomic Spectrometric Detectors, ed. A. Sanz-Medel, Elsevier Science Ltd, Amsterdam, 1999.
13. M. J. Marques, A. Morales-rubio, A. Salvador and M. de la Guardia, Talanta 35, 1229-1239 (2001).
14. M. Sperling, S. Xu and B. Welz, Anal. Chem. 64, 3101-3108 (1992).
15. A.M. Naghmush, K. Pyrzynska and M. Trojanowicz, Anal. Chim. Acta 288, 247-257 (1994).
16. R.M. Cespon-Romero, M.C. Yebra-Biurrun and M.P. Bermejo-Barrera, Anal. Chim. Acta 327, 37-45 (1996).
17. A. Gaspar, C. Sogor and J. Posta, Microchem. J. 58, 251-255 (1999).
18. A. Gaspar and J. Posta, Anal. Chim. Acta 354, 151-158 (1997).
19. K.T. Valsaraj, Sep. Sci. Technol. 27, 1633-1642 (1992).
20. T.M. Holsen, E.R. Taylor, Y.C. Seo and PR. Anderson, Environ. Sci. Technol. 25, 1585-1589 (1991).
21. M. Hiraide, M.H. Sorouraddin and H. Kawaguchi, Anal. Sci. 10, 125-127 (1994).
22. A.M. Haji Shabani, S. Dadfarnia and K. Dehghan, Talanta 59, 719-725 (2003).
23. S. Dadfarnia, A.M. Salmanzadeh and A.M. Haji Shabani, J. Anal. At. Spectrom. 17, 1434-1438 (2002).
24. S. Dadfarnia, A.M. Haji Shabani, F. Tamaddon and M. Rezaei, Anal. Chim. Acta 539, 69-75 (2005).
25. R.A. Nickson, S.J. Hill and PJ. Worsfold, Anal. Proc. 32, 387-395 (1995).
26. T. Prasada Rao and J. Mary Gladis, Anal. Sci. 18, 517-524 (2002).
27. K. Isshiki, Y. Sohrin, H. Karatani and E. Nakayama, Anal. Chim. Acta, 224, 55-64 (1989).
28. H. Filik, Microchim. Acta 140, 205-210 (2002).
29. H. Filik, M. Dogutan and R. Apak, Anal. Bioanal. Chem. 376, 928-933 (2003).
30. B. Wen, X. Shan and J. Lian, Talanta 56, 681-687 (2002).
31. M. Hiraide, J. Iwasawa, S. Hiramatsu and H. Kawaguchi, Anal. Sci. 11, 611-615 (1995).
32. F. Merino, R. Soledad and D. Perez-Bendito, Anal. Chem. 75, 6799-6806 (2003).
33. Z. Fang, "Flow Injection Separation and Preconcentration", VCH, Weinheim, 1993.
34. V.A. Lemos, W.N.L. dos Santos, J.S. Santos and M.B. de Carvalho, Anal. Chim. Acta 481, 283-290 (2003).