Naslov
Potentiometric determination of cationic surfactants using chemically functionalized carbon nanotubes based electrode

Autori
Samardžić, Mirela ; Hajduković, Mateja ; Sečenji, Aleksandar ; Galović, Olivera

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

Izvornik
25. hrvatski skup kemičara i kemijskih inženjera s međunarodnim sudjelovanjem i 3. simpozij „Vladimir Prelog“ : knjiga sažetaka = 25th Croatian meeting of chemists and chemical engineers with international participation and 3rd symposium “Vladimir Prelog” : Book of abstracts / Šantić, Ana ; Đaković, Marijana - Zagreb : Hrvatsko kemijsko društvo = Croatian chemical society, 2017, 266-266

ISBN
9789535523277

Skup
Hrvatski skup kemičara i kemijskih inženjera s međunarodnim sudjelovanjem (25 ; 2017) ; Simpozij „Vladimir Prelog“ (3 ; 2017)

Mjesto i datum
Poreč, Hrvatska, 19.04.2017. - 22.04.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cationic surfactants ; chemically functionalized carbon nanotubes ; potentiometric titrations

Sažetak
Cationic surfactants (CSs) are widely used in bactericidical, algaecidical, fungicidical, disinfection and anticorrosive products, as cosmetic and pharmaceutical components, etc. The reference method for their determination is two-phase titration [1]. The method have many disadvantages, the largest of which is the use of toxic organic solvents. Considering that, it is of great importance to find alternative method for CSs determination. CSs selective electrodes proved to be a good sensors for CS determination [2]. Their membrane usually consists of sensor material, plasticizer and PVC [3]. Nanomaterials, as component of the membrane can significantly improve sensor properties[4]. Using solid-contact electrodes without an inner e lectrolyte, additionally improve sensors, solving problems as leaching of the sensor material, signal stability and sensor life-time [5]. The sensor material of the electrode was prepared by chemically functionalization of multiwalled carbon nanotubes (MWCNT) with –OSO3-CP+ group. Developed sensor was used as detector in potentiometric titrations of CSs. Hyamine, cetylpyridinium chloride (CPC), hexadecyltrimethylammonium bromide (CTAB) and 1, 3-didecyl-2-methylimidazolium chloride (DMIC) were used as the analytes during the potentiometric titrations, and sodium dodecyl sulfate (NaDDS) was used as the titrant. The applicability of the sensor was tested in three commercial products with different concentrations of CSs. The results of CSs determination in commercial products were compared with those obtained by the reference method and showed the excellent correlation between the methods.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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