Naslov
Utjecaj termodinamičkih čimbenika na taloženje kalcijeva oksalata monohidrata
(The effect of thermodynamic factors on the precipitation of calcium oxalate monohydrate)

Autori
Vidas, Bernarda

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, preddiplomski

Fakultet
Odjel za kemiju

Mjesto
Osijek

Datum
29.09

Godina
2021

Stranica
15

Mentor
Stanković, Anamarija ; Kontrec, Jasminka

Neposredni voditelj
Njegić Džakula, Branka

Ključne riječi
calcium oxalate monohydrate ; thermodynamic parameters ; crystal size and morphology ; supersaturation

Sažetak
Spontaneous precipitation of calcium oxalate monohydrate (COM) in additive-free systems with nearly the same initial supersaturation has been investigated. The influence of thermodynamic parameters such as: temperature (t = 25, 36.5 and 48 °C), calcium concentration range of 5 mmol dm−3 ≤ ci(Ca2+) ≤ 10 mmol dm−3 and pH (5.6, 6.5 and 7.5), on the potential changes in structure, morphology and crystal size of COM have been studied. The values of the initial parameters were varied in a wide range and included values relevant for mimicking the physiological conditions related to those in biological systems and kidney stone formation. The results contributed to the knowledge about the influence of the selected individual parameters as well as their interplay influence on in vitro precipitation of COM. The findings have indicated that COM was the only precipitated phase exhibiting predominant dendritic morphology. The effects on crystal size, structure and morphology are more pronounced at higher temperature, pH and calcium concentration. These results provide basis for future studies of overall mechanism of COM formation and the future studies of kidney stone prevention. Zavrsni rad je izradjen u sklopu znanstvenog rada naslova: „Precipitation of calcium oxalate monohydrate under nearly the same initial supersaturation” autora Nives Matijaković Mlinarić, Silvije Šafranko, Bernarde Vidas, Dominika Goman, Stele Jokić, Jasminke Kontrec, Branke Njegić Džakula, Ide Delač Marion, Martine Medvidović Kosanović i Anamarije Stanković objavljenog u časopisu Croatica Chemica Acta.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Interdisciplinarne prirodne znanosti

POVEZANOST RADA