Determination of mercury in bismuth by neutron activation analysis |
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Authors: | A Hirose I Horiuchi D Ishii |
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Institution: | Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku. Nagoya 464 Japan |
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Abstract: | A method has been developed for the determination of traces of mercury in bismuth by neutron activation analysis. After sample irradiation at a flux of 7 · 1013 n cm-2 s-1 for 20 min, mercury was separated from bismuth by addition of ammonium sulfide and re-dissolution of bismuth (matrix) sulfide with nitric acid, and filtration of sulfur containing mercury on a membrane filter. The activity of the 68- or 68–77-keV region, counted with a Ge(Li) or NaI(Tl) detector, was used for quantitative measurements. The method was applied to bismuth samples containing 0.1–100 p.p.m. of mercury. |
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