Silica refractories--Determination of phosphorus pentoxide content--Molybdenum blue photometric method
Methods for chemical analysis of spodumenite and lepidolite concentrates--The molybdenum blue photometric method for the determination of phosphorus pentoxide content
Determination of total phosphorus pentoxide content in detergents-Quinoline phosphomolybdate gravimetric method
Silicate rocks--Determination of phosphorus pentoxide