Füsun OKÇU, F. Nil ERTAŞ, H. İsmet GÖKÇEL, Hüseyin TURAL

Anodic Stripping Voltammetric Behavior of Mercury in Chloride Medium and its Determination at a Gold Film Electrode

The electrochemical behavior of aqueous Hg(II) ions at a gold film electrode is described. The effects of supporting electrolyte and halide ions on the anodic stripping voltammetric behavior of Hg(II) ions was illustrated to prepare a basis for the analysis in real samples with high saline content. The concentration ratio of metallic mercury to halide ions at the electrode surface determines the resulting peak characteristics. The peak potentials in particular shift in a more negative direction as the halide concentration increases. A comparative study with Cu(II) ions revealed that a different mechanism is involved in their reoxidation steps. Mercuric ions were collected at 0.2 V from 0.1 M HClO4 medium containing 3 x 10-3 M HCl and a detection limit of 0.12 ng/mL (S/N = 3) was attained (RSD < 5%, n = 5). The method was applied for the determination of mercury in haemodialysis concentrates. No significant interference was observed from other possibly interfering metallic ions.

Anahtar Kelimeler:

Mercury determination, gold film electrode, anodic stripping voltammetry, heamodialysis solution

Anodic Stripping Voltammetric Behavior of Mercury in Chloride Medium and its Determination at a Gold Film Electrode

Keywords:

Mercury determination, gold film electrode, anodic stripping voltammetry, heamodialysis solution,

PDF

___

A.W. Bott, Bioanalytical Systems, West Lafeyette In USA, 47, 906-1382 (1995).
W.L. Clevenger, B.W. Smith and J.D. Winefordner, Crit. Rev. Anal. Chem. 27, 1-26 (1997).
L.A. De Paz, A. Alegria, R. Barbera, R. Farre and M.J Lagarda, Food Chem. 58, 169-172 (1997).
J.M. Ombaba, Microchemical Journal 53, 195 -200 (1996).
H. Bagheri and A. Gholami, Talanta 55, 1141-1150 (2001).
E. Temmerman, C. Vandecasteele, G. Vermeir, L. Leyman and R. Dams, Anal. Chim. Acta 236, 371-376 (1990).
H.E.L Armstrong, W.T. Corns, P.B. Stockwell, G. O’Connor, L. Ebdon and E.H. Evans, Anal. Chim. Acta , 245-253 (1999).
E.L. Seibert, V.L Dressler, D. Pozebon and A.J. Curtius, Spectrochim. Acta Part B 56, 1963-1971 (2001).
P. Ugo, S. Zampieri, L.M. Moretto, and D. Paolucci, Anal. Chim. Acta 434, 291-300 (2001).
A.C. Barbosa, and G.A. East, Ecological Trace Element Research 60, 153-161 (1997).
H. Emteborg, H.W. Sinemus, B. Radziuk, D.C. Baxter and W. Frech, Spectrochim. Acta Part B, 51, 837 (1996).
Y. Cai, S. Monsalud, R. Jaffe and R.D. Jones, J. Chromatogr. 876, 147-155 (2000).
S. Rio-Segade and C. Bendicho, Talanta 48, 477-484 (1999).
J. Qvarnstr¨om, Q. Tu, F. Wolfgang and C. L¨udke, Analyst 125, 1193-1197 (2000).
R. Di Roso, M. Waeles, P. Monbet and C.J. Chaumery, Anal. Chim. Acta 410, 97-105 (2000).
M.F. Tutunji, Fresenius J. Chem. 356, 90-95 (1996).
Y. Bonfil, M. Brand and E. Kirowa-Eisner, Anal. Chim. Acta 424, 65-76 (2000).
M. Hatle, Talanta 34, 1001-1007 (1987).
I. Gustavsson, J. Anal. Chem. 214, 31-36 (1986).
F. Scholz, L. Nitschke and G. Henrion, Anal. Chim. Acta 199, 167-171 (1987).
D. Sancho, L. Deban, F. Barbosa, R. Pardo and M. Vega, Food Chem. 74, 527-531 (2001).
T.R Linstrom, and C.D Johnson, Anal. Chem. 1855-1857 (1981).
H. Huilliang, D. Jagner and L. Renman, Anal. Chim. Acta 202, 117-122 (1987).
E.A. Viltchinskaia, L.L. Zeigmann, D.M. Garcia and P.F. Santos, Electroanal. 9, 633-640 (1996).
I. Svancara, M. Matousek, E. Sikora, K. Schachl, K. Kalcher and K. Vytras, Electroanal. 9, 827-833 (1997).
R. Agraz, M.T. Sevilla and L. Hernandez, J. Anal. Chem. 390, 47-57 (1995).
C. Faller, N.Y. Stojko, G. Henze and K.Z. Brainina, Anal. Chim. Acta 396, 195-202 (1999).
J. Wang, “Stripping Analysis”, VCH Publishers, Deerfield Beach, FL, USA (1985).
A.S. Misiego, R. Garcia, M. Carra and A. Zirino, Electroanal. 8, 534-538 (1996).
J. Pinchin and J. Newham, Anal. Chim. Acta 90, 91-102 (1997).
E.P. Gil and P. Ostapczuk, Anal. Chim. Acta 293, 55 (1994).
R. Romagnoli and V.F. Vetere, Anal. Chim. Acta 234, 331-338 (1990).
F.N. Erta¸s, H.˙I. G¨ok¸cel and H. Tural, Turk. J. Chem. 24, 261-267,(2000).
D. Jagner, E. Sahlin and L. Renman, Anal. Chem. 68, 1616-1622 (1996).