高等学校化学学报

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (3): 221.

• 研究论文 • 上一篇    下一篇

高灵敏显色体系的研究—镧-偶氮硝羧-阴阳离子混合表面活性剂体系

周执明, 胡杰, 王益闻   

  1. 浙江工学院化工系
  • 收稿日期:1984-12-30 出版日期:1986-03-24 发布日期:1986-03-24

Study on the Colour-Forming System with High Sensitivity—The System Lanthanum-Carboxynitrazo-Anionic/Cationic Surfactants

Zhou Zhiming, Hu Jie, Wang Yiwen   

  1. Department of Chemical Engineering, Zhejiang Institute of Technology, Hangzhou
  • Received:1984-12-30 Online:1986-03-24 Published:1986-03-24

PDF (PC)

摘要： 本文研究了在SDBS和TPB阴阳离子混合表面活性剂存在下镧与偶氮硝羧的显色反应,两种表面活性利在等摩尔附近时具有显著的增敏作用,其ε730为3.00×105 l·mol-1·cm-1·用电导法测定了混合表面活性剂的临界胶束浓度。

Abstract: The colour-forming reaction of lanthanum with carboxynitrazo was studied in the presence of anionic and cationic surfactants, sodium dodecyl benzene sulfonate (SDBS) and tetradecyl pyridine bromide (TPB). Strong sensitization was observed under the cooperative action of both surfactants near the equimolar([SDBS] : [TPB] = 1.2:1.0).The apparent molar absorptivity at 730 nm reaches as high as 3.00×105 l/mol·cm. The mechanism of the sensitization was discussed.

TrendMD: