Nitrogen Isotope Separation with Displacement Chromatography Using Cryptand Polymer

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概要

• 論文の詳細を見る

• Chromatographic nitrogen isotope separation was experimentally studied in a break through manner. A solution of 0.4 mol·dm−3 NH4Cl in methanol was continuously fed at 0.12, 0.25 and 0.50cm3·min−1 into a glass tube packed with cryptand(2B,2,1) polymer. The temperature of column was kept constant at 293 K by passing temperature-controlled water through a jacket. Nitrogen gas was generated from the effluent reacted with Ca(ClO)2 solution after removing methanol by vacuum distillation, and the ratio of 14N15N to 14N14N was measured with a mass spectrometer (Finnigan MAT252). NH4Cl concentrations in the samples were gravimetrically determined. An enrichment factor, which is defined as an equilibrium separation factor minus unity was determined to be 0.0025±0.0013. A HETP (height equivalent to a theoretical plate) was evaluated 0.5±0.2 cm at 14 cm·h−1. This is the first report on nitrogen isotope separation with cryptand polymer.

• 一般社団法人 日本原子力学会の論文
• 2002-04-25

著者

• Sugiyama Hiroshi

  Department of Chemistry, Graduate School of Science Kyoto University

• YAMAMOTO ICHIRO

  Department of Pathology, Kitasato University School of Hygienic Sciences

• Enokida Youichi

  Department Of Nuclear Engineering Nagoya University

• Sugiyama Hiroshi

  Department Of Chemistry Graduate School Of Science Kyoto University

• Yamamoto Ichiro

  Department Of Chemistry Graduate School Of Science The University Of Tokyo

• Sugiyama Hiroshi

  Department Of Chemistry Faculty Of Science

• Sugiyama Hiroshi

  Department Of Nuclear Engineering Nagoya University

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