Microestimation of phosphate in the presence of large amounts of fluoride
Autor: | Walter Selig, Jack W. Frazer, Arthur M. Kray |
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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 |
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