製塩工程における高濃度電解質水溶液の溶存酸素濃度測定  [in Japanese] Measurement of Solubility of Oxygen in Electrolyte Solution Used in Salt Manufacturing Process  [in Japanese]

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Abstract

製塩工程で使用されるかん水や母液等の混合電解質水溶液の溶存酸素濃度を25~90℃の範囲でWinkler法により測定を行った. 純水及び塩田かん水組成の水溶液における溶存酸素濃度測定値は文献値と一致した.<BR>また25, 50, 70, 90℃の各温度において塩化ナトリウム, 塩化マグネシウム, 塩化カルシウム, 塩化カリウムそれぞれの水溶液における溶存酸素濃度測定結果から塩類効係数を求めた. 得られた塩類効果係数と混合電解質水溶液中の各電解質とのイオン強度より混合電解質水溶液中の溶存酸素濃度を推定し, 測定値と良好な相関を得た.<BR>以上の結果から, 製塩工程で使用される混合電解質水溶液の溶存酸素濃度の推定が可能と考えられる.

The determination of dissolved oxygen using the Winkler method in an electrolyte solution such as brine or mother liquid used in a salt manufacturing process is discussed. The solubility of oxygen in pure water at 298-363 K conforms to the value proposed by Winkler. And the measured values of brine obtained from salt farms using the Winkler method and the van Slyke-Neil method are almost the same. It is believed that the Winkler method is effective for measuring the solubility of dissolved oxygen at high temperatures.<BR>On the other hand, the salting-out parameters of oxygen are calculated using the relationship between the solubility of oxygen and the ionic strength in NaCl, MgCl<SUB>2</SUB>, CaCl<SUB>2</SUB>, KCl solutions, respectively. The solubility of oxygen in various mixed electrolyte solutions is accurately estimated by using the salting-out parameters and the ionic strength at 343 and 363 K. From these results, it is believed that the solubility of oxygen can be calculated from the composition of electrolyte solution.

Journal

  • Bulletin of the Society of Sea Water Science, Japan

    Bulletin of the Society of Sea Water Science, Japan 54(2), 111-116, 2000-04-01

    The Society of Sea Water Science, Japan

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Codes

  • NII Article ID (NAID)
    10008275709
  • NII NACSIS-CAT ID (NCID)
    AN0018645X
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03694550
  • NDL Article ID
    5334511
  • NDL Source Classification
    ZM44(科学技術--地球科学--海洋・陸水・火山) // ZP8(科学技術--化学・化学工業--無機化学・無機化学工業)
  • NDL Call No.
    Z15-47
  • Data Source
    CJP  NDL  J-STAGE 
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