Naslov
Potenciometrijsko određivanje fluorida u vinima s područja Dalmacije i statistička analiza
(Potentiometric determination of fluoride in wines of Dalmatia area and statistical analysis)

Autori
Radić, Josip ; Munitić, Ivana ; Budić-Leto, Irena ; Bralić, Marija

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

Izvornik
26. hrvatski skup kemičara i kemijskih inženjera, Knjiga sažetaka / Galić, Nives ; Rogošić, Marko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2019, 101-101

ISBN
978-953-6894-67-3

Skup
26. hrvatski skup kemičara i kemijskih inženjera (26HSKIKI) ; 4. simpozij Vladimir Prelog

Mjesto i datum
Šibenik, Hrvatska, 09.04.2019. - 12.04.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
fluoride ion selective electrode (FISE), wine, statistical analysis method (Spearman correlation, cluster analysis)

Sažetak
Fluorine is an essential element for human health. Deficiency or excess of fluorine can cause different health problems. The largest source of fluoride is water, but it can also be found in foods (vegetables) and other drinks, such as tea juices, alcoholic beverages and wines [1, 2]. Proportion of fluoride ions in drinks varies depending on their technological production process and the origin of beverages [3]. A total of 30 samples of red and white wines from different production areas in Dalmatia were analyzed in this study. Fluorides were determined potentiometric using commercial fluoride ion-selective electrode by means of the standard addition method. Before the measurement, the calibration curve was prepared with the standard NaF solution in a concentration range from 1×10-1 to 1×10-6 mol/L at a pH value of 4.7. The measurements were made with constant ionic strength (0.1 M KNO3) at room temperature. In all analyzed wine samples, pH value, alcohol concentration in volume percentage and ash content were determined using standard physicochemical analysis methods. Fluoride mass concentrations in white wines were ranged from 0.12 mg/L to 0.27 mg/L, whereas in red wines they were ranged from 0.07 mg/L to 0.40 mg/L. The analyzed wines are within the recommended limits for the concentration of fluoride in wine (1.0 mg/L) [4]. Using the statistical analysis method (Spearman correlation, cluster analysis), the correlation between the type of wine and the production area with the mass concentration of fluoride and certain analytical parameters was determined.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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