燐灰ウラン鑛の水分

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概要

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• The former analyses of autunite have not given the definite value of water content. In this paper the microgravimetric estimation of the water content of autunite from Nagatare (Fukuoka District) is reported. A small amount (11.573mg) of the pure mineral was dehydrated by desiccating agents and by heating at increasing temperatures. Losses of each procedure were determined with the micro-chemical balance. Table 1. Loss of autunite in weight after being dehydrated by desiccating agents and by heating at various temperatures. [table] The results obtained are shown in Table 1. The ignition with a burner expelled the total content of water amounting to 19.15%, which corresponds to 10.12 moles of water in the sample. The formula of autunite is therefore assurned to be CaOUO_3バ_2O_50H_2O, which derives the moles of dehydration in each procedure as shown in the same table. The fluorescent property of the mineral too was observed through the treatments.

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著者

• 中西 正城

  Department Of Chemistry Faculty Of Science Ochanomizu University

• 中西 正城

  Laboratory of Chemistry, Faculty of Science, Ochanomizu University

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• 燐灰ウラン鑛の水分

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