Abstract
The spectrographic estimation of yttrium in rare earth mixtures was achieved within a concentration range of 1–90% by means of the a.c. spark method using a large quartz spectrograph. The sample was mixed with ceria and zinc oxide in the ratio 2∶1∶2. The Y lines 2414.68 A and 2856.36 A were used as analytical lines for the ranges of 1–15% and 10–90%, respectively. The Ce line at 2603.65 A served as internal standard line. The standard deviation was 2–5%.
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