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master's thesis
Djelovanje antioksidansa na taloženje kalcijeva karbonata
Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2024. urn:nbn:hr:182:240915
Vidas, Bernarda
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry

Institutional repository: Repository of the Department of Chemistry, Osijek

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Vidas, B. (2024). Djelovanje antioksidansa na taloženje kalcijeva karbonata (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:240915

Vidas, Bernarda. "Djelovanje antioksidansa na taloženje kalcijeva karbonata." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2024. https://urn.nsk.hr/urn:nbn:hr:182:240915

Vidas, Bernarda. "Djelovanje antioksidansa na taloženje kalcijeva karbonata." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2024. https://urn.nsk.hr/urn:nbn:hr:182:240915

Vidas, B. (2024). 'Djelovanje antioksidansa na taloženje kalcijeva karbonata', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 14 January 2025, https://urn.nsk.hr/urn:nbn:hr:182:240915

Vidas B. Djelovanje antioksidansa na taloženje kalcijeva karbonata [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2024 [cited 2025 January 14] Available at: https://urn.nsk.hr/urn:nbn:hr:182:240915

B. Vidas, "Djelovanje antioksidansa na taloženje kalcijeva karbonata", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:182:240915

Metadata
TitleDjelovanje antioksidansa na taloženje kalcijeva karbonata
Title (english)The effect of antioxidants on calcium carbonate precipitation
AuthorBernarda Vidas
MentorAnamarija Stanković (mentor)
MentorBranka Njegić Džakula (komentor)
MBZ: 234226
Committee memberMartina Medvidović-Kosanović (predsjednik povjerenstva)
Committee memberAnamarija Stanković (član povjerenstva)
Committee memberAna Amić (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry)
Osijek
Defense date and country2024-09-24, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Inorganic Chemistry
Abstract
U radu je istraženo djelovanje antioksidansa protokatehuinske kiseline, PCA (engl. protocatechuic acid), na spontano taloženje kalcijeva karbonata u sustavu poetnih vrijednosti: koncentracija kalcija i karbonata 2,5 mmol dm-3, temperatura 25 °C i pH = 10,419. Proces taloženja praen je potenciometrijski, a dobiveni talozi su karakterizirani svjetlosnom mikroskopijom, infracrvenom spektroskopijom te rendgenskom difrakcijom. Dodatak PCA u taložni sustav kalcijeva karbonata uzrokovao je: inhibiciju spontanog taloženja kalcijeva karbonata, promjenu morfologije istaloženog kalcita te promjenu sastava taloga pri emu se maseni udio kalcita u talogu poveavao s poveanjem koncentracije dodane PCA.
Abstract (english)
The effect of the antioxidant protocatechuic acid (PCA) on the spontaneous precipitation of calcium carbonate was investigated in the system with initial values: concentration of calcium and carbonate ions 5 mmol dm-3, temperature 25 °C and pH 10.419. The progress of the precipitation process was followed potentiometrically and the precipitates were characterized by light microscopy, infrared spectroscopy and x-ray diffraction. The addition of PCA to the calcium carbonate precipitation system caused: inhibition of the spontaneous precipitation of calcium carbonate, a change in the morphology of the precipitated calcite, and an alteration in the composition of the precipitate. Specifically, the mass fraction of calcite in the precipitate increased with the increase of concentration of added PCA.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:240915
Study programmeTitle: University Graduate Study of Chemistry; Research Program; specializations in: Research Program
Course: Research Program
Study programme type: university
Study level: graduate
Academic / professional title: sveučilišni/a magistar/magistra kemije (sveučilišni/a magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-10-08 06:14:52