Microestimation of phosphate in the presence of large amounts of fluoride

Autor: Walter Selig, Jack W. Frazer, Arthur M. Kray
Rok vydání: 1975
Předmět:
Zdroj: Mikrochimica Acta. 64:581-587
ISSN: 1436-5073
0026-3672
DOI: 10.1007/bf01219229
Popis: A method for the microestimation of orthophosphate in the presence of large amounts of fluoride is described. A lead ion-selective electrode and a double-junction reference electrode are used to monitor the potentiometric titration with 0.01M lead perchlorate. Solutions are buffered at pH 8.25 to 8.75. A computer-controlled titration system is used for titration and data processing. Up to 400 mg of fluoride, a 13000-fold excess, can be tolerated in the estimation of 10−6 M phosphate.
Databáze: OpenAIRE