The determination of calcium in yttrium oxide by alpha-particle activation analysis |
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| Authors: | Xue Zhi-Len Tan Ming-Guang Zhang Jia-Din Bao Jin-Rong |
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| Affiliation: | (1) Institute of Nuclear Research, Academia Sinica, Shanghai, The People's Republic of China;(2) Present address: Department of Chemistry, University of California, 95616 Davis, California, USA |
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| Abstract: | The determination of calcium in yttrium oxide through the40Ca(α, p)43Sc reaction was studied, using a post-irradiation radiochemical separation procedure. The half-life of43Sc was determined to be 3.87 hr. The chemical recovery was about 70%. The detection limit was about 10 ppb, for a 30 min irradiation at an alpha-particle beam current of 1 μA (Eα=13.4 MeV) and γ−γ coincidence counting (background counts being<1, cpm), with counting starting at 4 hours after the end of irradiation. Four samples of a batch of yttrium oxide (A.R.) were analyzed, and found to contain 13.9±1.0 ppm of calcium. |
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