Summary
Quadrivalent selenium can be determined with fair accuracy by mixing with an excess of KMnO4 in the presence of 25–75 ml of 2% NaF solution and 4–7 ml of 9 N sulfuric acid. After leaving the reaction mixture for 10–30 minutes the excess KMnO4 is estimated by one of the following procedures: A) Titration of the excess KMnO4 with monovalent mercury, B) Adding an excess of Hg2 2+ solution to react with the excess KMnO4 followed by titrating the excess mercurous with KMnO4 solution.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Ferguson, R. H., W. Lerch and J. E. Day: J. Amer. chem. Soc. 53, 126 (1931); cf. Z. analyt. Chem. 93, 365 (1933).
Issa, I. M., S. A. Eid and R. M. Issa: Anal. chim. Acta (Amsterdam) 11, 275 (1954); cf. Z. analyt. Chem. 145, 221 (1955).
Issa, I. M., and R. M. Issa: Chemist-Analyst 45, 16 (1956); cf. Z. analyt. Chem. 153, 214 (1956).
Issa, I. M., H. Khalifa and M. Hamdy: Anal. chim. Acta (Amsterdam) 16, 301 (1957); cf. Z. analyt. Chem. 160, 40 (1958).
Schrenk, W. T., and B. L. Browning: J. Amer. chem. Soc. 48, 2250 (1926); cf. Z. analyt. Chem. 71, 467 (1927).
Strecker, W., and L. Schartow: Z. analyt. Chem. 64, 218 (1924).
Tomiček, O., O. I. Pročke and V. Pavelka: Collect. czechoslov. chem. Commun. 11, 449 (1939).
Author information
Authors and Affiliations
Additional information
Part I: Issa, I. M., and M. Hamdy, Z. analyt. Chem. 172, 94 (1980).
Rights and permissions
About this article
Cite this article
Issa, I.M., Hamdy, M. Oxidations with potassium permanganate in the presence of fluoride. Z. Anal. Chem. 172, 162–167 (1960). https://doi.org/10.1007/BF00449133
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00449133