Abstract
AbstractA general method for the quantitative analysis of non‐conducting solids has been developed, and its application is described for the particular problem of the determination of hafnium oxide in mixtures of hafnia and zirconia over the concentration range 0.01‐55%. The advantage of the method is that not more than 10 mg. of the oxides is required for the preparation of the electrodes, the material being attached to the end of flat graphite electrodes by a drop of Bakelite varnish and excited by means of an impulse are of a new type.A number of line pairs have been examined to discover the most suitable, and it has been found possible to obtain good results by the use of two, namely. A standard deviation of = 6% has been obtained by this method. Some estimations of the residual zirconia of very pure hafnium oxide have been made using the lines Zr II 2387. i8A., HfII 2385.78A.
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