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master's thesis
Karakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida
Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2024. urn:nbn:hr:182:402203
Duković, Iva
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

Institutional repository: Repository of the Department of Chemistry, Osijek

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Duković, I. (2024). Karakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:402203

Duković, Iva. "Karakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2024. https://urn.nsk.hr/urn:nbn:hr:182:402203

Duković, Iva. "Karakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2024. https://urn.nsk.hr/urn:nbn:hr:182:402203

Duković, I. (2024). 'Karakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 23 November 2024, https://urn.nsk.hr/urn:nbn:hr:182:402203

Duković I. Karakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2024 [cited 2024 November 23] Available at: https://urn.nsk.hr/urn:nbn:hr:182:402203

I. Duković, "Karakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:182:402203

Metadata
TitleKarakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida
Title (english)Characterization of the new all-solid-state potentiometric sensor for determination of anionic surfactants
AuthorIva Duković
MentorMirela Samardžić (mentor)
Committee memberMateja Budetić (predsjednik povjerenstva)
Committee memberMirela Samardžić (član povjerenstva)
Committee memberAleksandar Sečenji (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2024-09-16, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Analytic Chemistry
Abstract
Tenzidi ili povrbinski aktivne tvari su vrsta molekula koje smanjuju povrbinsku napetost između dvije faze. Klasificiraju se na anionske, kationske, amfolitske i neionske tenzide. Anionski tenzidi su povrbinski aktivne tvari koje imaju negativan naboj na svom hidrofilnom kraju. Neke od metoda određivanja anionskih tenzida su spektrofotometrijske, potenciometrijske, kromatografske, titrimetrijske metode i druge. Cilj ovog rada bila je karakterizacija novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida. Metoda koja je koribtena u radu je direktna potenciometrija. Selektivnost novog all-solid-state potenciometrijskog senzora ispitana je metodom stalne koncentracije interferenata. Od deset ispitanih otopina smetaju ih tvari (interferenata) samo se natrijev dodecilbenzensulfonat (NaDBS) pokazao kao mogu i interferent, ime je potvrđena dobra selektivnost novog senzora prema natrijevom dodecil sulfatu (NaDDS). Pri ispitivanju dinami kog odziva dobiveno vrijeme odziva iznosilo je oko 9 sekundi ime se potvrđuje brz odziv senzora prema NaDDS-u. Nadalje je ispitan utjecaj pH vrijednosti na odziv senzora te je iz dobivenih rezultata vidljivo da je mjerno pH podru je pri pH od 2 do 8. Zadnji ispitan parametar bio je tijek signala koji je iznosio 2,7 mV/h.
Abstract (english)
Surfactants or surface active agents are a type of molecules that reduce the surface tension between two phases. They are classified as anionic, cationic, ampholytic and nonionic surfactants. Anionic surfactants have a negative charge at their hydrophilic end. Some of the methods for determination of anionic surfactants are spectrophotometric, potentiometric, chromatographic, titrimetric methods and others. The aim of this paper was the characterization of a new all-solid-state potentiometric sensor for the determination of anionic surfactants. The method used in the paper is the direct potentiomety. The selectivity of the new all-solid-state potentiometric sensor was tested using the fixed interference method. Of the ten interferent solutions tested, only sodium dodecylbenzenesulfonate (NaDBS) proved to be a possible interferent, thereby confirming the good selectivity of the new sensor towards sodium dodecyl sulfate (NaDDS). When testing the dynamic response, the obtained response time was about 9 seconds, which confirms the fast response of the sensor toward NaDDS. Furthermore, the influence of the pH value on the response of the sensor was examined, and the obtained results show that the measuring pH range was between pH 2 and 8. The last parameter tested was the signal drift, which was 2.7 mV/h.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:402203
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 on2024-10-03 11:25:41