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No.18 (1975/01) >

 
Title :ゼフィラミン塩抽出によるウランのポーラログラフ定量
Title alternative :Polarographic determination of uranium by extraction with zephiramine
Authors :桂, 幸昭
Authors alternative :Katsura, Kosho
Issue Date :30-Jan-1975
Abstract :Sodium benzoate reacts with uranyl ion in the presence of zephiramine (tetradecyl-demethyl-benzyl-ammonium chloride; Zeph+. C1-) to form ion association complex of whitish-yellow precipitate. The complex is extracted into chloroform and determined by the polarographic method in O. 5 M H_2 SO_4 as supporting electrolyte. 97.2 % of uranyltribenzoate-zephiramine complex is extracted at pH 4.0-6.0. Under the optimum condition, diffusion current at - 0.58 V (vs. S. C. E.) is proportional to uranyl ion concentration in the range of 10-^<-4>-10^<-3> M. The composition of the extracted species is assumed to be (Zeph+. UO_2 (C_6H_5COO)_3(H_2O)_3-) and more than 95.2 % of the complex compound is stripped by 0.5 M H_2 SO_4.
Type Local :紀要論文
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/23507
Citation :琉球大学理工学部紀要. 理学編 = Bulletin of Science & Engineering Division, University of Ryukyus. Mathematics & natural sciences no.18 p.59 -66
Appears in Collections:No.18 (1975/01)

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