Naslov
The Application of Microfluidics for Anionic Surfactant Determination

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

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

Izvornik
Bulletin of the Chemists and Technologists of Bosnia and Herzegovina, Special Issue / Maksimović, Milka ; Sofić, Emin ; Galijašević, Semira ; Avdić, Nurudin - , 2014, 52-52

Skup
Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina with International Participation

Mjesto i datum
Sarajevo, Bosna i Hercegovina, 10.10.2014. - 12.10.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
anionic surfactant; dimethyldioctadecylammonium-tetraphenylborate; FIA/SIA; microfludic; potentiometric

Sažetak
Anionic surfactants (AS) are represented with 58% of the total global production of surfactants. Standard methods for determination of AS in wastewater and commercial products are MBAS (Methylene Blue Active Substances), and two-phase titration. Because of the shortcomings that both standard methods have, there is a need for replacing them. Potentiometric measurements with the ion-selective electrode (ISE) solved most of the problems of standard methods. Microfluidics methods offer new possibilities in determining AS exploiting the ability to control molecules in space and time. Flow injection analysis (FIA) and Sequential injection analysis (SIA) using the screen-printed microsensor with incorporated new ionic associate (dimethyldioctadecylammonium-tetraphenylborate, DDA-TPB) as a detector, were used for determination of the AS. The measured electromotive force (EMF) is a function of the AS concentration in the sample. Sodium dodecyl sulfate (NaDDS) and sodium dodecyl benzene sulfonate (NaDBS) were used for calibration. The real samples are commercial products and industrial wastewater with different contents of AS. The sensor showed a sub-Nernstian slope for both anionic surfactants. Measurements were performed with adjusted ionic strength and pH. The results showed good agreement with those obtained using the standard methods.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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