Polarographische Untersuchungen an Solochromviolett RS in Pufferlösungen in Abwesenheit und in Gegenwart oberflächenaktiver Stoffe (SAS)
- 18 Downloads
- 1 Citations
Polarographic study of solochrome violet RS in buffer solutions in absence and presence of surface active substances (SAS)
Abstract
The polarographic behaviour of solochrome violet RS is investigated in buffer solutions of varying pH in the absence and presence of surfactants (triton 100-X and dodecylbenzene-sulphonate). The reduction proceeds irreversibly along a single wave in acid solutions and two waves in alkaline ones. The electrode reaction corresponds to four electrons in media of pH<2.5 and pH>8.0; in media of pH 4 5.5 two electrons are consumed. In solution of pH 2.5 4 or 5.5–8.0, both reactions contribute in varying magnitudes. The addition ofSAS causes the inhibition of reduction beyond the 2-electrons stage in acid solutions; the polarograms comprise one wave in case ofDBS and two waves of equal height in presence of triton. In alkaline media the polarogram comprises three waves due to the splitting of the main reduction wave. The kinetic parameters of the electrode reaction are also determined.
Preview
Unable to display preview. Download preview PDF.
Literatur
- 1.J. A. Dean undH. A. Bryan, Anal. Chim. Acta16, 87, 94 (1957).CrossRefGoogle Scholar
- 2.M. Perkins undG. F. Reynolds, Anal. Chim. Acta18, 616, 625 (1958);19, 54, 174 (1958).CrossRefGoogle Scholar
- 3.T. M. Floreuce undG. H. Aylward, Austral. J. Chem.15, 65 (1962).CrossRefGoogle Scholar
- 4.T. M. Florence, l. c.18, 609 (1965).CrossRefGoogle Scholar
- 5.T. M. Florence, F. J. Miller undH. E. Zittel, Anal. Chem.38, 1065 (1956).CrossRefGoogle Scholar
- 6.L. Holleck, J. M. Abdelkader undA. M. Shams El-Din, J. Electroanal. Chem.20, 287 (1969).CrossRefGoogle Scholar
- 7.H. Khalifa undS. W. Bishara, Z. Anal. Chem.178, 184 (1960).CrossRefGoogle Scholar
- 8.H. T. S. Britton, Hydrogen Ions, Vol. I, 4. Aufl., S. 365. London: Chapman and Hall. 1952.Google Scholar
- 9.R. M. Issa undB. A. Abd-El-Nabey, Z. Anal. Chem.231, 339 (1967);R. M. Issa, B. A. Abd-El-Nabey undH. Sadek, Electrochim. Acta13, 1827 (1968).CrossRefGoogle Scholar
- 10.I. M. Issa, R. M. Issa, M. M. Ghoneim undY. M. Temerk, Electrochim. Acta18, 265 (1973).CrossRefGoogle Scholar
- 11.I. M. Issa, R. M. Issa, Y. M. Temerk undM. R. Mahmoud, Electrochim. Acta18, 139 (1973).CrossRefGoogle Scholar
- 12.W. J. Seager undP. J. Elving, Sbornik Kezimarod Polarog. Sjezdu. Prague 1st cong. (1951), Pt. I, S. 281–299.Google Scholar
- 13.J. Koutecky, Chem. listy47, 323 (1953): Coll. Czechosl. Chem. Commun.11, 243 (1953).Google Scholar
- 14.I. M. Issa undM. Tharwat. Electrochim. Acta17, 343 (1972).CrossRefGoogle Scholar
- 15.I. M. Issa, A. A. El Samahy, R. M. Issa undY. M. Temerk, l.c., 1615 (1972).CrossRefGoogle Scholar