首页 | 本学科首页   官方微博 | 高级检索  
     检索      

甲酚红光度法测定痕量阳离子表面活性剂
引用本文:余仁军,韩志忠,张学艳,任荣萍,翟好英.甲酚红光度法测定痕量阳离子表面活性剂[J].内江师范学院学报,2008,23(4):43-45.
作者姓名:余仁军  韩志忠  张学艳  任荣萍  翟好英
作者单位:内江师范学院化学与生命科学系,四川,内江,641112
基金项目:内江师范学院青年基金 , 大学生科研项目
摘    要:在3.0mol/L H3PO4溶液中,甲酚红(MPR)分别与阳离子表面活性剂(CS)溴化十六烷基三甲铵(CTAB)和溴化十六烷基吡啶(CPB)形成离子缔合物,溶液均由橙色变为橙红色,从而使得溶液吸光度值发生改变,其最大吸收波长均位于519nm处.在优化实验条件下,吸光度变化值△A与CTAB和CPB浓度之间均符合比尔定律,摩尔吸光系数分别为1.05×10^5(CTAB)和1.00×10^5(CPB)L·mol^-1·cm^-1.该方法简便,快速,灵敏,用于合成水样中痕量阳离子表面活性剂的测定,结果较满意.

关 键 词:甲酚红  分光光度法  阳离子表面活性剂
文章编号:1671-1785(2008)04-0043-03
修稿时间:2008年2月27日

Spectrophotometric Determination of Trace Cationic Surfactants with Cresol Red
YU Ren-jun,HAN Zhi-zhong,ZHANG Xue-yan,REN Rong-ping,ZHAI Hao-ying.Spectrophotometric Determination of Trace Cationic Surfactants with Cresol Red[J].Journal of Neijiang Teachers College,2008,23(4):43-45.
Authors:YU Ren-jun  HAN Zhi-zhong  ZHANG Xue-yan  REN Rong-ping  ZHAI Hao-ying
Institution:(Department of Chemistry and Life Science, Neijiang Normal University,Neijiang, Sichuan 641112, China)
Abstract:In 3.0 mol / L H3PO4 solution, cresol red (MPR) with the cationic surfactant (CS) CTAB and CPB associated to form ionic complex which the solution color changed and the absorbance values debased. The greatest absorption wavelength was at 519 nm. Under the optimum conditions, Beer's law was obeyed between AA and the CTAB and CPB concentration, and the molar absorption coefficient is 1.05 ×10^5 (CTAB)and 1.00×10^5 (CPB)respectively. The method was used for the determination of trace cationic surfactant in the synthetical water samples with satisfactory results.
Keywords:cresol red  spectrophotometry  cationic surfactant
本文献已被 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号