Naslov
Potentiometric response characteristics of carbon paste electrode for maprotiline determination

Autori
Radić, Josip ; Bralić, Marija ; Buljac, Maša ; Šola, Marina

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

Izvornik
27. hrvatski skup kemičara i kemijskih inženjera, Knjiga sažetaka / Marković, Dean ; Meštrović, Ernest ; Namjesnik, Danijel ; Tomašić, Vesna - Zagreb, 2021, 102-102

Skup
27. hrvatski skup kemičara i kemijskih inženjera (27HSKIKI)

Mjesto i datum
Veli Lošinj, Hrvatska, 05.10.2021. - 08.10.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
maprotiline, percipitated reagents, carbon paste electrode, potentiometry

Sažetak
In this paper, for the first time, carbon paste electrodes (CPE) were prepared for potentiometric quantitative determination of maprotiline, a second generation antidepressant [1]. A series of pastes of different composition and ratios of components were prepared. Dibutyl phthalate, dioctyl phthalate, 2-nitrophenyl octyl ether, bis(2-ethylhexyl) adipate and tris(2-ethylhexyl) phosphate were used as binders, whereas sodium tetraphenylborate, phosphotungstic acid, phosphomolybdic acid and ammonium reineckate were used as precipitating reagents to synthetize the ion association complexes (IAC). A 2.0 mm diameter Teflon holder made in laboratory [2], significantly reduced the consumption of paste components, since a lot of measurements could have been performed with 150 mg of paste, which was enough to examine all analytical parameters. Response characteristics of all electrodes were tested in 0.015 M acetate buffer solution (pH = 4.5) at room conditions. Unmodified CPEs showed no significant linearity, while some of CPEs with incorporated IAC and salt exhibited near-Nernstian slope over the linear dynamic range of 1.0×10-6 – 1.0×10-2 mol L-1 of maprotiline concentration. Some of the prepared CPEs showed better preliminary response characteristics than the response characteristics of PVC electrodes previously reported. [3]

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA