A Potentiometric Study of the Briggs-Rauscher Oscillatory Reaction in a Solution of Ionic Surfactants and Tetrabutylammonium Hydrogensulphate

2018 ◽  
Vol 3 (39) ◽  
pp. 10951-10958
Author(s):  
Marek Pribus ◽  
Libuše Trnková ◽  
Oľga Grančičová ◽  
Anna Olexová
Keyword(s):  
Ionic Surfactants ◽  
Oscillatory Reaction ◽  
Potentiometric Study

A Potentiometric Study of the Briggs-Rauscher Oscillatory Reaction in a Solution of Nonionic Surfactants andtert-Butanol

2018 ◽  
Vol 50 (7) ◽  
pp. 481-494 ◽  
Author(s):  
Marek Pribus ◽  
Libuše Trnková ◽  
Ol'ga Grančičová ◽  
Anna Olexová
Keyword(s):  
Nonionic Surfactants ◽  
Oscillatory Reaction ◽  
Potentiometric Study

Adsorption of ionic and non-ionic surfactants by wool charring waste

1981 ◽  
Vol 31 (1) ◽  
pp. 395-400 ◽  
Author(s):  
Francis Perineau ◽  
Antoine Gaset
Keyword(s):  
Ionic Surfactants

Artemisinin (ART) Drug Delivery Using Mixed Non-ionic Surfactants and Evaluation of Their Efficiency in Different Cancer Cell Lines

2017 ◽  
Vol 4 (4) ◽  
Author(s):  
Elnaz Asgharkhani ◽  
Aazam Najmafshar ◽  
Mohsen Chiani
Keyword(s):  
Zeta Potential ◽  
Cell Line ◽  
Mtt Assay ◽  
Therapeutic Index ◽  
Stability Study ◽  
Polydispersity Index ◽  
Ionic Surfactants ◽  
Cytotoxicity Test ◽  
Molar Ratios ◽  
Chemotherapy Agent

This study aims to investigate the effects of different non-ionic surfactants on physicochemical properties of ART niosomes. ART is a natural compound that is used as an antimalarial and chemotherapy agent in medicine. ART has low bioavailability, stability and solubility. In order to solve these problems and enhancing the efficiency of the drug, nanotechnology was used. In the present study, several niosomal formulations of ART prepared using different molar ratios of Span 60 : Tween 60 : PEG-600: ART in PBS. These three formulations were FI (1:1:0.5:0.5), FII (2:1:0.5:0.5) and FIII (1:2:0.5:0.5), respectively. The encapsulation efficiency was measured by HPLC and the drug release was evaluated by dialysis method. The cytotoxicity test was determined by MTT assay. The size, zeta potential and polydispersity index of the vesicles was measured by Zeta Sizer. Stability study was performed within two months. The MTT assay results showed that cytotoxicity effect of these formulations on MCF-7 cell line is better than C6 cell line and the FIII had the best results for both of them. The entrapment efficiencies of the formulations I, II and III were obtained 82.2±1.88%, 75.5±0.92% and 95.5±1.23%, respectively. The results of size, zeta potential and polydispersity index indicated that the size of the vesicles is below 200 nm, their surface charge is about -35 mV and they were monodisperse. Stability and release study indicated that the formulation III has the best stability and release pattern. Therefore, the use of PEGylated niosomal ART can effectively improve its therapeutic index, stability and solubility.

Potentiometric study of enantioselective effects in α-amino acid complexes of copper(II)

1985 ◽  
Vol 104 (1) ◽  
pp. 63-67 ◽  
Author(s):  
I.L. Ulanovski ◽  
A.A. Kurganov ◽  
V.A. Davankov
Keyword(s):  
Amino Acid ◽  
Potentiometric Study ◽  
Amino Acid Complexes
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