prikaz prve stranice dokumenta Razvoj novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida
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master's thesis
Razvoj novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida
2024. urn:nbn:hr:182:709368
Krklec, Leticija
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Krklec, L. (2024). Razvoj 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:182:709368

Krklec, Leticija. "Razvoj 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:182:709368

Krklec, Leticija. "Razvoj 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:182:709368

Krklec, L. (2024). 'Razvoj novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:182:709368

Krklec L. Razvoj 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 22] Available at: https://urn.nsk.hr/urn:nbn:hr:182:709368

L. Krklec, "Razvoj 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:182:709368

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Metadata
TitleRazvoj novog all-solid-state potenciometrijskog senzora za određivanje anionskih tenzida
Title (english)Development of the new all-solid-state potentiometric sensor for determination of anionic surfactants
AuthorLeticija Krklec
MentorMirela Samardžić (mentor)
Committee memberAleksandar Sečenji (predsjednik povjerenstva)
Committee memberMirela Samardžić (član povjerenstva)
Committee memberMateja Budetić (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 su povrbinski aktivne tvari koje smanjuju povrbinsku napetost i u otopinama stvaraju micele. Podskupina tenzida su anionski tenzidi, odnosno amfifilne tvari koje sadrže anionsku skupinu vezanu izravno ili preko intermedijera na dugi lanac ugljikovodika. Anionski tenzidi koriste se u deterdžentima za ib enje i proizvodima za osobnu njegu te zbog toga nerijetko u prevelikim koli inama zavrbavaju u okolibu. Zbog btetnosti za vodeni sustav, vrlo je bitno pratiti njihovu koncentraciju u okolibu. Cilj ovog rada bio je razviti all-solid-state potenciometrijski senzor za određivanje anionskih tenzida koriste i ionski par dimetildioktadecilamonijev tetrafenilborat (DDA-TPB) kao senzorski materijal. Kao metoda koristila se direktna potenciometrija. Membrana all-solid-state senzora izrađena je od senzorskog materijala, plastifikatora i grafita. Pri optimizaciji membrane, ispitani su utjecaj udjela senzorskog materijala i plastifikatora na odziv senzora. Najbolje odzivne karakteristike pokazao je senzor s plastifikatorom o-nitrofenil oktil eterom (o-NPOE) i udjelom senzorskog materijala od 4 % koji je odabran za daljnja mjerenja.
Abstract (english)
Surfactants are surface-active agents that reduce surface tension and create micelles in solutions. A subgroup of surfactants are anionic surfactants, which are amphiphilic substances that contain an anionic group attached directly or through an intermediate to a long hydrocarbon chain. Anionic surfactants are used in cleaning detergents and personal care products, and therefore often end up in excessive amounts in the environment. Because of their harmfulness to the water system, it is very important to monitor their concentration in the environment. The aim of this work was to develop an all-solid-state potentiometric sensor for the determination of anionic surfactants using the dimethyldioctadecylammonium tetraphenylborate (DDA-TPB) ion pair as sensing material. Direct potentiometry was used as the method. The membrane of the allsolid-state sensor was made of sensor material, plasticizer and graphite. When optimizing the membrane, the influence of the content of sensor material and plasticizer was examined. The best response characteristics were obtained using the sensor with o-nitrophenyl octyl ether (o-NPOE) as the plasticizer and a sensor material content of 4%, which was selected for further measurements.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:709368
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 11:35:17