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master's thesis
Ispitivanje ionsko-selektivnih membrana na bazi željezovog(II) sulfida uz dodatak nanočestica magnetita na odziv prema kationima željeza
diplomski rad
2021. urn:nbn:hr:167:443425
Živalj, Matea
University of Split
Faculty of Chemistry and Technology
Division of Chemistry

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Živalj, M. (2021). Ispitivanje ionsko-selektivnih membrana na bazi željezovog(II) sulfida uz dodatak nanočestica magnetita na odziv prema kationima željeza : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:443425

Živalj, Matea. "Ispitivanje ionsko-selektivnih membrana na bazi željezovog(II) sulfida uz dodatak nanočestica magnetita na odziv prema kationima željeza : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:443425

Živalj, Matea. "Ispitivanje ionsko-selektivnih membrana na bazi željezovog(II) sulfida uz dodatak nanočestica magnetita na odziv prema kationima željeza : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:443425

Živalj, M. (2021). 'Ispitivanje ionsko-selektivnih membrana na bazi željezovog(II) sulfida uz dodatak nanočestica magnetita na odziv prema kationima željeza : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 16 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:443425

Živalj M. Ispitivanje ionsko-selektivnih membrana na bazi željezovog(II) sulfida uz dodatak nanočestica magnetita na odziv prema kationima željeza : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2021 [cited 2024 November 16] Available at: https://urn.nsk.hr/urn:nbn:hr:167:443425

M. Živalj, "Ispitivanje ionsko-selektivnih membrana na bazi željezovog(II) sulfida uz dodatak nanočestica magnetita na odziv prema kationima željeza : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:167:443425

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TitleIspitivanje ionsko-selektivnih membrana na bazi željezovog(II) sulfida uz dodatak nanočestica magnetita na odziv prema kationima željeza : diplomski rad
Title (english)Testing of ion-selective membranes based on iron(II) sulphide with the addition of nanoparticles of magnitite to the response to iron cations : master thesis
AuthorMatea Živalj
MentorJosipa Giljanović (mentor)
Committee memberAnte Prkić (predsjednik povjerenstva)
Committee memberMarija Bralić (član povjerenstva)
Committee memberJosipa Giljanović (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Chemistry)
Split
Defense date and country2021-10-21, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Provedeno je ispitivanje odziva ionsko-selektivnih membrana na željezove(II) i željezove(III) ione u otopinama željezovih soli pripravljenih u acetatnom ili dušičnom puferu u svrhu namještanja pH vrijednosti otopine. Osnovni cilj bilo je testirati membranske elektrode te ispitati mogućnost praktične primjene istih. S obzirom da su ionsko-selektivne membrane predstavljene u ovom radu modificirane nanočesticama magnetita, ispitan je i njihov utjecaj na karakteristike senzora kao što su linearno dinamičko područje odziva te osjetljivost metode. Testiranje svake membrane je ponovljeno minimalno tri puta. Potenciometrijska metoda se jako često koristi u laboratorijima zbog svoje jednostavnosti, niske cijene i praktičnosti. Selektivnost metode može se povećati promjenom reakcijskih uvjeta, odnosno s promjenom pH otopine uzorka. Ispitivanje membrana se vršilo u elektrokemijskoj ćeliji metodom slijednog razrjeđivanja koristeći otopinu željezova(II) sulfata heptahidrata pripremljenu u acetatnom puferu, odnosno otopinu željezova(III) nitrata nonahidrata pripremljenu u dušičnom puferu. Razrjeđivanje se provodilo sve dok razlika potencijala između dva mjerenja nije iznosila 0-1 mV. Dobivene vrijednosti odziva grafički su obrađene.
Abstract (english)
The response of ion-selective membranes to iron(II) and iron(III)ions in solutions of iron salts prepared in acetate or nitrogen buffer was performed in order to adjust the pH value of the solution. The main goal was to test membrane electrodes and examine the possibility of their practical application. Since the ion-selective membranes presented in this paper were modified with magnetite nanoparticles, their influence on the sensor characteristics such as the linear dynamic response range and the sensitivity of the method was also examined. Testing of each membrane was repeated at least three times. The potentiometric method is very often used in laboratories due to its simplicity, low cost and practicality. The selectivity of the method can be increased by changing the reaction conditions such as by changing the pH of the sample solution. Membrane testing was performed in an electrochemical cell by sequential dilution using a solution of iron(II) sulfate heptahydrate prepared in acetate buffer, or a solution of iron(III) nitrate nonahydrate prepared in nitrogen buffer. Dilution was performed until the potential difference between the two measurements was 0-1 mV. The obtained response values were graphically processed.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:443425
Study programmeTitle: Food technology - graduate - university
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjerka prehrambene tehnologije (magistar/magistra inženjerka prehrambene tehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-12-20 09:37:42