Naslov
Characterisation of the new sensor for anionic surfactant determination based on tetraoctadecylammonium-tetraphenylborate

Autori
Petrušić, Sanja ; Samardžić, Mirela ; Sak-Bosnar, Milan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts, Special Issue of Bulletin of the Chemists and Technologists of Bosnia and Herzegovina / - Sarajevo, 2016, 38-38

Skup
2nd International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina

Mjesto i datum
Sarajevo, Bosna i Hercegovina, 21.10.2016. - 23.10.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
anionic surfactant sensor; potentiometric titration; commercial products; effluents

Sažetak
Anionic surfactants are the most significant type of surfactants, commercially. The standard reference methods for their determination are methylene blue active substances method (MBAS) and two-phase titration. Although these methods are frequently applied, they suffer from many drowbacks such as lack of ability to be automated and miniaturized and use of toxic and carcinogenic organic solvents. Due to the fact that it is necessary to monitor anionic surfactants concentration in environment, as well as in industrial processes and products, there is a need to improve existing sensors and methods for their determination. A new liquid membrane type of anionic surfactant selective electrode based on tetraoctadecylammonium-tetraphenylborate (TODA-TPB) is constructed. Three electrodes with different percentage of electroactive material (1%, 3% and 5%) are compared. The best response characteristics and the highest jump in equivalence point during potentiometric titration of anionic surfactants exhibited electrode with 3% of electroactive material so that electrode is selected for further characterization. The selected sensor exhibits a Nernstian response for analyzed anionic surfactants (sodium dodecyl sulfate and sodium dodecylbenzenesulfonate) and excellent selectivity performance. The applicability of the sensor is demonstrated by succesfull determination of anionic surfactants in real samples (commercial detergents and effluents).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA