Naslov
VOLTAMETRIJSKO I SPEKTROFOTOMETRIJSKO ODREĐIVANJE FOLNE KISELINE U REALNIM UZORCIMA
(THE VOLTAMMETRIC AND SPECTROPHOTOMETRIC DETERMINATION OF FOLIC ACID IN REAL SAMPLES)

Autori
Vladislavić, Nives ; Buljac, Maša ; Buzuk, Marijo ; Kožuh, Stjepan ; Pavić, Paula ; Brinić, Slobodan ; Bralić, Marija

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

Izvornik
International conference 16th Ružička days "TODAY SCIENCE-TOMORROW INDUSTRY" / Ante Jukić (ur.). - Osijek : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2016, 40-40

ISBN
978-953-6894-58-1

Skup
International conference 16th Ružička days "TODAY SCIENCE-TOMORROW INDUSTRY"

Mjesto i datum
Vukovar, Hrvatska, 21.09.2016. - 23.09.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Bizmut film elektrode ; voltametrija ; spektrofotometrija ; folna kiselina
(bismuth film electrode ; voltammetry ; spectrophotometry ; folic acid)

Sažetak
The study of preparation of ex situ formed bismuth film at glassy carbon electrode (BiF–GCE), with arranged homogenous structure (confirmed by scanning electron microscopy), is presented. Prepared BiF was used for the determination of folic acid (FA) by square wave cathodic stripping voltammetry. Optimized procedure and analytical performance of the prepared BiF are presented. A linear response between 0.1 μmol dm–3 and 10 μmol dm–3 together with detection limit of 0.05 nmol dm–3 were obtained. This developed method has been validated and confirmed by spectrophotometric method involves coupling reaction of folic acid and 3-aminophenol to produce an orange yellow-colored product with absorbance at 355 nm (at pH 8). Both methods were successfully applied for determination of FA in real samples (vegetables, tablets and juices) with excellent recovery ranged from 98.8-101.4 % for voltammetric method and 99.7-104.1 % for spectrophotometric method.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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