高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (3): 386.

• 研究简报 • 上一篇    下一篇

二(2-乙基己基)磷酸对氨基酸的萃取平衡

曹汉瑾, 王德宝, 刘沛妍, 吴子生, 严忠   

  1. 东北师范大学化学系, 长春 130024
  • 收稿日期:1995-03-28 出版日期:1996-03-24 发布日期:1996-03-24
  • 通讯作者: 曹汉瑾,男,57岁,副教授.
  • 作者简介:曹汉瑾,男,57岁,副教授.
  • 基金资助:

    国家自然科学基金

Extraction Equilibria of Amino Acids with Di-(2-ethylhexyl)phosphoric Acid

CAO Han-Jin, WANG De-Bao, LIU Pei-Yan, WU Zi-Sheng, YAN Zhong   

  1. Department of Chemistry, Northeast Normal University, Changchun 130024
  • Received:1995-03-28 Online:1996-03-24 Published:1996-03-24

关键词: 氨基酸, 二(2-乙基己基)磷酸, 萃取平衡, 分配比

Abstract: The extraction equilibria of various amino acids with di-(2-ethylhexyl)phosphoric acid(P204) were studied in the lower pHrange.P204 reacts with the cations of amino acids according to the stoichiometric ratio determined by ionic valency.For monovalent cations, the reaction forming complex can be expressed as follows: A+ + 2(HL)2=AL(HL)3 + H+ The values of extraction equibibrium constant Kex of several amino acids were obtained.The effects of some parameters on the distribution ratio of amino acids were also studied.

Key words: Amino acid, Di-(2-ethylhexyl) phosphoric acid, Extraction equilibrium, Distribution ratio

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