A PLASMA ARC TECHNIQUE FOR THE SPECTROCHEMICAL DETERMINATION OF TITANIUM AND ZIRCONIUM IN MOLYBDENUM

摘要

A plasma arc technique has been developed for the spectrochemical determination of titanium and zirconium in molybdenum alloys. Titanium is determined in the 0.25 to 1.5 percent range and zirconium in the 0.05 to 0.4 percent range with an overall precision of about ± 5 percent and an accuracy which approaches the precision. Sensitivity for the zirconium determination is achieved by using high gas flow and high amperage. Molybdenum is used as the internal standard and a background correction is necessary to produce a straight line analytical curve for zirconium over the concentration range of interest.