Summary
Very low concentrations of Si(IV), Ge(IV), As(V) and P(V) in natural waters are determined by HPLC. The method is based on solvent extraction of molybdoheteropoly compounds as ion associates with dichloromethane. Separation of the heteropoly compounds without decomposition is possible by using reversed phase systems, especially the CN-modified reversed phase. The method makes it possible to separate different modifications from each other and to quantify the rate of coextracted isopoly compound.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
C. Wadelin, M. G. Mellon, Anal. Chem.25, 1668 (1953).
F. Umland, G. Wünsch, Z. Anal. Chem.213, 186 (1965).
K. Taguchi, K. Ogata, K. Tanaka, S. Tanabe, T. Imanari, Bunseki Kagaku32, 20 (1983).
N. Sakurai, K. Kadohata, N. Ichinose, Z. Anal. Chem.314, 634 (1983).
F. Alt, F. Umland, Z. Anal. Chem.274, 103 (1975).
N. A. Ivanov, N. G. Todorova, Anal. Chim. Acta91, 389 (1977).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Braungart, M., Rüssel, H. Separation of molybdoheteropoly acids of phosphorus, arsenic, silicon and germanium as ion-associates by HPLC. Application to quantitative determination in water. Chromatographia 19, 185–187 (1984). https://doi.org/10.1007/BF02687736
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02687736