Differential Potentiometric Determination of Selenium and Tellurium in Refined Selenium Products.

Determination of Water and Alkali Metal Oxide in Alkali Metal Salts of Selenium and Tellurium by Karl Fischer Titration.

“…American, Australian, and British standard methods for phosphorus in iron and steel (2, 4, 5) have deficiencies which can be grouped into those affecting the time-length of the procedure and accuracy. The first group includes the necessity for supplementary oxidation of phosphorus, recovery of phosphorus from precipitated oxides, and conversion of ammonium phosphomolybdate (AmPMo) to magnesium ammonium phosphate (2) or lead molybdate (4, 5) when a gravimetric measurement is desired.…”