DETERMINATION OF SMALL QUANTITIES OF RESI DUE PHOSPHATE IN TRIS-SODIUM PHOSPHANE FORMIATE BY MEANS OF P-31 NMR-SPECTROSCOPY

The concentration of residue phosphate in tris-sodium-phosphon-formiat e (TPF.6H2O) water solutions has been determined via comparing integra tion of the P-31 n.m.r. signal of the residue phosphate and one of the 31C NMR satellites of the TPF.6H2O P-31 n.m.r. signal. The P-31 n.m.r . spectra have been obtained in inverse gated detection mode; statisti cal methods of validation prove the certainty of the phosphate concent rations obtained to be excellent and strongly recommend the quantitati ve method employed for the detection of concentrations down to 0,1 %.