M. Ionescu, V. Coșofreţ, T. Panaitescu
1980
Citations
0
Influential Citations
11
Citations
Journal
Analytical Letters
Abstract
Abstract The conditions for the determination of sodium thiophosphate and sodium S-(2-amino-ethyl)-thiophos-phate in the presence of phosphate ion using ion-selective membrane electrodes are described. Both thiophosphates (inorganic and organic) are hydrolyzed in acidic medium. The phosphate ion is determined with Pb(II) using a Pb2+ – selective membrane electrode. Cysteamine is determined by potentiometric titration with Hg(I1) using a Ag+/S2− – crystal membrane electrode or by direct potentiometry with a Cu2+ selective membrane electrode. The results were verified by the iodination method.