物理化学学报 >> 1993, Vol. 9 >> Issue (06): 724-727.doi: 10.3866/PKU.WHXB19930602

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大值无限稀释活度系数的测定

鲍坚斌; 黄强; 陈庚华; 韩世钧   

  1. 浙江大学化学系，杭州 310027
  • 收稿日期:1993-07-19 修回日期:1993-09-06 发布日期:1993-12-15
  • 通讯作者:

Determination of Large Value Activity Coefficients at Infinite Dilution

Bao Jian-Bin; Huang Qiang; Chen Geng-Hua; Han Shi-Jun   

  1. Department of Chemistry, Zhejiang University, Hangzhou 310027
  • Received:1993-07-19 Revised:1993-09-06 Published:1993-12-15
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关键词: 大值无限稀释活度系数, 连续采样技术, 气提法

Abstract: Continuous sampling technique—an improvement of the gas stripping method has been proposed for the determination of large value activity coefficients at infinite dilution (γ~∞>10~2). In this technique, the outlet gas flow from the equilibrium cell is introduced directly into a detector of a gas chromatograph. The curve of the concentration of the solute in the flow gas versus the stripping time will be gained continueously, and the variation slope can be obtained more precisely. Experimental activity coefficient results have been compared with the literature values which were obtained by the other methods.

Key words: Large value activity coefficients at infinite dilution, Continuous sampling technique, Gas stripping method