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undergraduate thesis
Određivanje anionskih tenzida u komercijalnim sustavima novim potenciometrijskim senzorom
2015. urn:nbn:hr:182:473112
Mićak, Josipa
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Mićak, J. (2015). Određivanje anionskih tenzida u komercijalnim sustavima novim potenciometrijskim senzorom (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:473112

Mićak, Josipa. "Određivanje anionskih tenzida u komercijalnim sustavima novim potenciometrijskim senzorom." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2015. https://urn.nsk.hr/urn:nbn:hr:182:473112

Mićak, Josipa. "Određivanje anionskih tenzida u komercijalnim sustavima novim potenciometrijskim senzorom." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2015. https://urn.nsk.hr/urn:nbn:hr:182:473112

Mićak, J. (2015). 'Određivanje anionskih tenzida u komercijalnim sustavima novim potenciometrijskim senzorom', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 10 December 2024, https://urn.nsk.hr/urn:nbn:hr:182:473112

Mićak J. Određivanje anionskih tenzida u komercijalnim sustavima novim potenciometrijskim senzorom [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2015 [cited 2024 December 10] Available at: https://urn.nsk.hr/urn:nbn:hr:182:473112

J. Mićak, "Određivanje anionskih tenzida u komercijalnim sustavima novim potenciometrijskim senzorom", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:182:473112

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Metadata
TitleOdređivanje anionskih tenzida u komercijalnim sustavima novim potenciometrijskim senzorom
Title (english)Determination of anionic surfactants in commercial systems with the new potentiometric sensor
AuthorJosipa Mićak
MentorMirela Samardžić (mentor)
MentorOlivera Galović (komentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2015-09-29, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Tenzidi su površinski aktivne tvari koje smanjuju površinsku napetost, a struktura im se sastoji od hidrofilne i hidrofobne skupine. Podijeljeni su na anionske, kationske, neionske i amfolitske. Anionski tenzidi su najšire primijenjeni i najčešće se koriste u obliku praškastih deterdženata jer lako uklanjaju mrlje s odjeće. Za određivanje koncentracije tenzida najčešće se koriste potenciometrijske titracije koje koriste ionsko-selektivne elektrode. Određivanje anionskih tenzida u realnom sustavu provedeno je koristeći novi potenciometrijski senzor koji se bazira na ionskom paru dimetildioktadecilamonijevtetrafenilboratu (DDA-TPB) kao elektroaktivnoj komponenti i o-nitrofeniloktileteru (oNPOE) kao plastifikatoru. Kao titrans je korištena standardna otopina cetilpiridinijeva klorida (CPC) koncentracije c = 4·10-3 mol/dm3, a analit je bila vodena otopina praškastog deterdženta Bioflower masene koncentracije γ = 5 g/dm3 koji, prema deklaraciji, sadrži 5–15% anionskih tenzida, dok se natrijev dodecilsulfat (NaDDS) koncentracije c = 4·10-3 mol/dm3 koristio kao standardni dodatak.
Abstract (english)
Surfactants are surface active agents that lower the surface tension and contain hydrophilic and hydrophobic groups. They are divided into anionic, cationic, nonionic and ampholitic surfactants. Anionic surfactants are most widely used, specially in the form of powdered detergents due to their ability to remove stains from clothing. Determination of surfactants concentration is usually carried out by potentiometric titration using ion-selective electrode. Determination of anionic surfactants in real system was carried out using the newly synthesized potentiometric sensor based on an dimethyldioctadecylammonium tetraphenylborate (DDA-TPB) ion pair as the sensing element and o-nitrophenyl octyl ether (o-NPOE) as plasticizer. Standard solution of cetylpyridinium chloride (CPC) at concentration of c = 4·10-3 mol/dm3 was used as titrant, water solution of powdered detergent Bioflower at mass concentration of γ = 5 g/dm3 containing 5–15% surfactants, according to the declaration, was used as analyte and sodium dodecylsulfate (NaDDS) at concentration of c = 4·10-3 mol/dm3 was used as standard addition.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:473112
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
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Created on2016-07-15 10:45:49