Title of article :
Membrane electrode sensitive to a cationic surfactant in aquo-organic media Original Research Article
Author/Authors :
Sandeep R Patil، نويسنده , , Animesh K Rakshit، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Abstract :
An electrode originally sensitive to dodecyltrimethylammonium ions (DTA+) was proven to be sensitive to tetradecyltrimethylammonium ions (TTA+) and was used for determination of critical micelle concentration of tetradecyltrimethylammonium bromide (TTAB) in water. Moreover the response of the electrode was tested in presence of non-aqueous polar solvents i.e. dimethyl formamide (DMF) and dimethyl sulphoxide (DMSO) in water and was observed to be Nernstian within the concentration range studied (up to 40% v/v of DMF and DMSO). The validity of this electrode, for electrochemical measurements, was checked by comparing the critical micelle concentration values of TTAB obtained by using the electrode, with those obtained by conductivity measurements in mixed polar solvents. The effect of solvent on the micellization of TTAB has been discussed.
Keywords :
Ion selective electrode , Tetradecyltrimethylammonium bromide , Hydrophobic effect , Critical micelle concentration
Journal title :
Analytica Chimica Acta
Journal title :
Analytica Chimica Acta