FLOTATION-SPECTROPHOTOMETRIC DETERMINATION OF GERMANIUM WITH PHENYLFLUORONE IN COAL FLY ASH
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概要
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A precise and accurate method based on the flotation-spectrophotometry has been developed for the microdetermination of germanium in coal fly ash. The germanium-phenylfluorone complex was floated with cyclohexane at the phase boundary and separated from the excess reagent by removing the aqueous phase. Cyclohexane was a suitable extractant for the separation of germanium tetrachloride from foreign ions. Extractability of germanium was 90.3 ± 0.5 %. Coal fly ash was treated with aqua regia and hydrofluoric acid in a teflon decomposition vessel, and germanium was determined as phenylfluorone complex in a cyclohexane-ethanol medium at 505 nm. The absorbance of the reagent blank was 0.010 ± 0.002. The accuracy of the proposed method was studied by analyzing synthetic samples and NBS 1633 coal fly ash.
- 1984-05-05
著者
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Shida^ Junichi
Department Of Applied Chemistry Faculty Of Engineering Yamagata University
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Takahashi Yoshiko
Department Of Gastroenterology And Hepatology School Of Medicine Shimane University
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SHIDA^[○!R] Junichi
Department of Applied Chemistry, Faculty of Engineering, Yamagata University
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OJIMA Koichi
Department of Applied Chemistry, Faculty of Engineering, Yamagata University
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MATSUO Tsutomu
Department of Applied Chemistry, Faculty of Engineering, Yamagata University
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Ojima Koichi
Department Of Applied Chemistry Faculty Of Engineering Yamagata University
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Matsuo Tsutomu
Department Of Applied Chemistry Faculty Of Engineering Yamagata University
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Takahashi Yoshiko
Department Of Applied Chemistry Faculty Of Engineering Yamagata University
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Shida Junichi
Department of Applied Chemistry, Faculty of Engineering, Yamagata University
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