M. Dargatz et al., DETERMINATION OF SMALL QUANTITIES OF RESI DUE PHOSPHATE IN TRIS-SODIUM PHOSPHANE FORMIATE BY MEANS OF P-31 NMR-SPECTROSCOPY, Journal fur praktische Chemie, Chemiker-Zeitung, 336(4), 1994, pp. 340-342
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 %.