应用化学 ›› 2009, Vol. 26 ›› Issue (12): 1480-1483.

• 研究论文 • 上一篇    下一篇

同步荧光光谱法测定十二烷基苯磺酸钠的临界胶束浓度

张建,邱宇,于道永*   

  1. (中国石油大学化学化工学院生物工程与技术中心 青岛 266555)
  • 收稿日期:2009-02-18 修回日期:2009-04-09 出版日期:2009-12-10 发布日期:2009-12-10
  • 通讯作者: 于道永,男,博士,副教授; E-mail:daoyong@upc.edu.cn; 研究方向:应用化学
  • 基金资助:
    国家自然科学基金(20773164)资助项目

Critical Micelle Concentration Determination of Sodium Dodecyl Benzene Sulfonate by Synchronous
Fluorescence Spectrometry

 ZHANG Jian, QIU Yu, YU Dao-Yong*   

  1. (Center for Bioengineering and Biotechnology,College of Chemistry and Chemical Engineering,China University of Petroleum,Qingdao 266555)
  • Received:2009-02-18 Revised:2009-04-09 Published:2009-12-10 Online:2009-12-10

摘要:

采用表面张力、电导率、紫外可见吸收光谱、恒波长同步荧光光谱法分析了典型阴离子表面活性剂十二烷基苯磺酸钠在水溶液中的临界胶束浓度(CMC)。 结果表明,同步荧光光谱法测定CMC时的样品用量少,检测灵敏度高,具有较高的准确性;测定的十二烷基苯磺酸钠的第一临界胶束浓度和第二临界胶束浓度分别为1.48和6.90 mmol/L,与传统的表面张力法和电导率法的测定结果一致。 验证了同步荧光光谱法测定表面活性剂CMC的可靠性。

关键词: 表面活性剂,十二烷基苯磺酸钠,同步荧光光谱,临界胶束浓度

Abstract:

The critical micelle concentration of sodium dodecyl benzene sulfonate, which is a typical anion surfactant, was respectively determined by surface tension, electrical conductivity, UVVis absorption spectral and synchronous fluorescence spectral methods. Results show that synchronous fluorescence spectral method is characterized by less sample volume, high sensitivity, and high accuracy. The first and the second critical micelle concentrations were determined by the synchronous fluorescence spectral method to be 1.48 and 6.90 mmol/L respectively, which are well consistent with those data from the traditional surface tension and electrical conductivity methods, thus, verifying the reliability of synchronous fluorescence spectrometry to measure the critical micelle concentrations of surfactants.

Key words: surfactant,sodium dodecyl benzene sulfonate,synchronous fluorescence spectrum,critical micelle concentration

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