Rapid photometric determination of phosphorus in iron ores and related materials as phosphomolybdenum-blue
1Stelco Inc., P.O. Box 2030, Hamilton, Ontario, Canada.
Abstract:
A rapid, simple and accurate method for determining phosphorus photometrically in iron ores and related materials, obviating the use of perchloric acid, is described. The sample is fused with sodium peroxide in a zirconium crucible and the melt dissolved in hydrochloric acid. The molybdenum-blue complex is developed by the addition of ammonium molybdate and hydrazine sulphate and the absorbance is measured at 725 nm. The range of the method is from 0.005 to 1.0% P. A batch of 6 samples can be analysed in about 2 hr.
Related Concept Videos
Photoluminescence: Applications
Fluorescence and Phosphorescence: Instrumentation
Experimental Determination of Chemical Formula
The Phosphorus Cycle
Gas Chromatography: Types of Detectors-II


