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undergraduate thesis
Utjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata
2016. urn:nbn:hr:182:499408
Šafranko, Silvija
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry

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Šafranko, S. (2016). Utjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:499408

Šafranko, Silvija. "Utjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2016. https://urn.nsk.hr/urn:nbn:hr:182:499408

Šafranko, Silvija. "Utjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2016. https://urn.nsk.hr/urn:nbn:hr:182:499408

Šafranko, S. (2016). 'Utjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 16 November 2024, https://urn.nsk.hr/urn:nbn:hr:182:499408

Šafranko S. Utjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2016 [cited 2024 November 16] Available at: https://urn.nsk.hr/urn:nbn:hr:182:499408

S. Šafranko, "Utjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:182:499408

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TitleUtjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata
Title (english)The Effect of Mechanical Mixing, Temperature and Citrate Concentration on the Calcium Oxalate Precipitation
AuthorSilvija Šafranko
MentorBerislav Marković (mentor)
MentorAnamarija Stanković (komentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry)
Osijek
Defense date and country2016-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Inorganic Chemistry
Abstract
Kalcijevi oksalati su kalcijeve soli oksalne kiseline i sastavni su dio gotovo svih bubrežnih kamenaca. Bubrežni kamenci posljedica su rasta kristala u urinarnom traktu, a gotovo 10% ljudi susretne se s tim problemom tijekom života. U medicinskom je rječniku proces nastajanja bubrežnih kamenaca poznatiji pod nazivom urolitijaza ili nefrolitijaza. Upravo se zbog te činjenice sve češće provode istraživanja kojima bi se u potpunosti objasnio mehanizam, uvjeti i moguća prevencija nastajanja bubrežnih kamenaca. Kalcijev oksalat kristalizira u tri hidratna oblika: termodinamički stabilan kalcijev oksalat monohidrat (vevelit, COM), metastabilan dihidrat (vedelit, COM) te trihidrat (kaoksit, COT) koji se rijetko pronalazi u kemijskom sastavu bubrežnih kamenaca. Eksperimentalno je pokazano da promjena temperature i koncentracije citrata može utjecati na taloženje kalcijeva oksalata te na morfologiju i veličinu nastalih kristala. Rezultati su obrađeni FTIR spektroskopijom, TG analizom i optičkom mikroskopijom.
Abstract (english)
Calcium oxalates are calcium salts of oxalic acid and they are the most common constituents of kidney stones. Kidney stones are the result of a crystal growth in the urinary tract and almost 10% of population experience such problems during their lifetime. Medical term of this process is known as the urolithiasis or nefrolithiasis. There have been many studies conducted with the aim to understand and explain the mechanism, precipitation conditions and possible prevention of the stone formation. Calcium oxalate crystallizes in three hydrate forms: thermodynamically stable monohydrate (whewellite, COM), the metastable modification, dihydrate (weddellite, COD) and trihydrate (caoxite, COT) which is rarely found in the kidney stones. The experimental results showed that a temperature changes and a concentration of citrate can influence morphology and size of precipitated crystals. Calcium oxalate crystals were studied by the means of thermal analysis (TGA) and infrared (FT-IR) spectroscopy. The morphology of calcium oxalate crystals was studied using the optical microscope.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:499408
Study programmeTitle: Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2017-01-04 09:19:07