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master's thesis
Flourimetrijsko određivanje selenija u jajima
2019. urn:nbn:hr:182:013088
Kanis, Laura
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Kanis, L. (2019). Flourimetrijsko određivanje selenija u jajima (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:013088

Kanis, Laura. "Flourimetrijsko određivanje selenija u jajima." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2019. https://urn.nsk.hr/urn:nbn:hr:182:013088

Kanis, Laura. "Flourimetrijsko određivanje selenija u jajima." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2019. https://urn.nsk.hr/urn:nbn:hr:182:013088

Kanis, L. (2019). 'Flourimetrijsko određivanje selenija u jajima', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 18 November 2024, https://urn.nsk.hr/urn:nbn:hr:182:013088

Kanis L. Flourimetrijsko određivanje selenija u jajima [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2019 [cited 2024 November 18] Available at: https://urn.nsk.hr/urn:nbn:hr:182:013088

L. Kanis, "Flourimetrijsko određivanje selenija u jajima", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:182:013088

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Metadata
TitleFlourimetrijsko određivanje selenija u jajima
Title (english)Fluorometric determination of selenium in eggs
AuthorLaura Kanis
MentorMirela Samardžić (mentor)
MentorMateja Budetić (pomoć pri izradi, neposredni voditelj)
Committee memberMartina Šrajer Gajdošik (predsjednik povjerenstva)
Committee memberMirela Samardžić (član povjerenstva)
Committee memberMarija Jozanović (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2019-10-31, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Analytic Chemistry
Abstract
U ovom radu fluorimetrijski se određivao selenij u uzorcima jaja uz pomoć fluorescentnog markera 2,3-diaminonaftalena. Metoda se temelji na stvaranju kompleksa selenija s fluorescentnim markerom. Intenzitet fluorescencije nastalog kompleksa proporcionalan je koncentraciji selenija. Za razaranje uzoraka korištena je mikrovalna digestija. Kao otapala koristili su se cikloheksan, heptan i smjesa heptana i 3%-n-butil-acetata. Na temelju rezultata zaključeno je kako je najbolje otapalo za ekstrakciju kompleksa Se-DAN cikloheksan. Učinkovitost i točnost metode ispitani su određivanjem selenija u referentnom uzorku i metodom standardnog dodatka. Selenij je određen u tri domaća i tri kupovna jaja pri čemu nije bilo značajne razlike u sadržaju selenija između domaćih i kupovnih jaja.
Abstract (english)
In this work, selenium was determined fluorimetrically in egg samples using the fluorescent marker 2,3-diaminonaphthalene. The method was based on the formation of a selenium complex with a fluorescent marker. The fluorescence intensity of the resulting complex was proportional to the selenium concentration. Microwave digestion was used to destroy the samples. Cyclohexane, heptane and a mixture of heptane and 3% n-butyl acetate were used as solvents. Based on the results, it was concluded that the best solvent for extraction of the Se-DAN complex was cyclohexane. The efficiency and accuracy of the method were tested by determining the selenium in the reference sample and using the standard addition method. Selenium was determined in three domestic and three purchase eggs, with no significant difference in selenium content between domestic and purchase eggs.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:013088
Study programmeTitle: Graduate University Study of Chemistry; research direction
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-11-14 09:32:38