物理化学学报 >> 2004, Vol. 20 >> Issue (04): 445-448.doi: 10.3866/PKU.WHXB20040425

研究简报 上一篇    

环境化工中微弱溶解度测定的新方法

陈明鸣;马沛生;王霖;陈冯   

  1. 天津大学化工学院,绿色合成与转化教育部重点实验室,天津 300072
  • 收稿日期:2003-11-12 修回日期:2003-12-22 发布日期:2004-04-15
  • 通讯作者: 陈明鸣 E-mail:chmm@vip.sina.com

A Novel Experimental Method for Minor Solid Solubility Determination Facing with Environment Issue

Chen Ming-Ming;Ma Pei-Sheng;Wang Lin;Chen Feng   

  1. Key Laboratory for Green Chemical Technology of State Education Ministry,School of Chemical Engineering & Technology,Tianjin University,Tianjin 300072
  • Received:2003-11-12 Revised:2003-12-22 Published:2004-04-15
  • Contact: Chen Ming-Ming E-mail:chmm@vip.sina.com

摘要: 将激光透射原理与化工中溶解度测定方法相结合,提出了一种激光法测定固体在液体中微弱溶解度的新方法.由于激光的稳定性、单向性和灵敏性,使得该种溶解度的测定比传统的目测法更加客观准确.这种新型测定方法除了可以解决传统化工中的数据测定问题,还可以应用于新兴的交叉学科——环境化工领域,尤其适用于环境化工中水溶解度方面的测定.例如,可针对环境保护中有毒有害腐蚀性物质的微弱水溶解度做准确测定.以对苯二甲酸分别在水和醋酸中的溶解为例,测定了300到 445 K温度范围内的微弱溶解度,并采用Wilson和Wilson-T模型关联.后者精度较好,可以作数据内插使用.

关键词: 微弱溶解度, 激光, 测定方法

Abstract: A new experimental method for solubility determination was developed based upon optical and chemical principles. It makes the determination of solubility data more objective and accurate. With the aid of laser, the novel method will be much helpful in getting solid-liquid equilibrium data especially for slight solubility, which is always appearing, in environment issue. It can be widely used not only for traditional chemical engineering research but also for the field of environment-chemical engineering research, which is a boom cross-discipline, especially applicable for water solubility determination. Using this method, solubility data for the binary systems of terephthalic acid+water and terephthalic acid+acetic acid have been measured in a temperature range of 300 to 445 K and all the experimental data have been correlated by Wilson equation and Wilson-T equation. It indicats that Wilson-T model will be better than Wilson model.

Key words: Slight solubility, Laser, Determination method