Potentiometric Studies of Micellization Behavior of Cationic Surfactants in the Presence of Glycol Additives and Triblock Polymer (Pluronic F68), Using Surfactant-Selective Sensors Based on Neutral Ion-Pair Complexes

2007 ◽  
Vol 46 (13) ◽  
pp. 4706-4709 ◽  
Author(s):  
Arifa Shaheen ◽  
Inderpreet Kaur ◽  
Rakesh Kumar Mahajan
2016 ◽  
Vol 216 ◽  
pp. 284-292 ◽  
Author(s):  
Samy M. Shaban ◽  
A.S. Fouda ◽  
M.A. Elmorsi ◽  
T. Fayed ◽  
O. Azazy

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1366
Author(s):  
Nikola Sakač ◽  
Dean Marković ◽  
Bojan Šarkanj ◽  
Dubravka Madunić-Čačić ◽  
Krunoslav Hajdek ◽  
...  

A novel, simple, low-cost, and user-friendly potentiometric surfactant sensor based on the new 1,3-dihexadecyl−1H-benzo[d]imidazol−3-ium-tetraphenylborate (DHBI–TPB) ion-pair for the detection of cationic surfactants in personal care products and disinfectants is presented here. The new cationic surfactant DHBI-Br was successfully synthesized and characterized by nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR) spectrometry, liquid chromatography–mass spectrometry (LC–MS) and elemental analysis and was further employed for DHBI–TPB ion-pair preparation. The sensor gave excellent response characteristics for CTAB, CPC and Hyamine with a Nernstian slope (57.1 to 59.1 mV/decade) whereas the lowest limit of detection (LOD) value was measured for CTAB (0.3 × 10−6 M). The sensor exhibited a fast dynamic response to dodecyl sulfate (DDS) and TPB. High sensor performances stayed intact regardless of the employment of inorganic and organic cations and in a broad pH range (2−11). Titration of cationic and etoxylated (EO)-nonionic surfactant (NSs) (in Ba2+) mixtures with TPB revealed the first inflexion point for a cationic surfactant and the second for an EO-nonionic surfactant. The increased concentration of EO-nonionic surfactants and the number of EO groups had a negative influence on titration curves and signal change. The sensor was successfully applied for the quantification of technical-grade cationic surfactants and in 12 personal care products and disinfectants. The results showed good agreement with the measurements obtained by a commercial surfactant sensor and by a two-phase titration. A good recovery for the standard addition method (98–102%) was observed.


2004 ◽  
Vol 16 (10) ◽  
pp. 843-851 ◽  
Author(s):  
Ruzica Matešic-Puac ◽  
Milan Sak-Bosnar ◽  
Mate Bilic ◽  
Bozidar S. Grabaric

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