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undergraduate thesis
Određivanje anionskih tenzida u čistim sustavima novim potenciometrijskim senzorom
2014. urn:nbn:hr:182:196581
Čičak, Marijo
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Čičak, M. (2014). Određivanje anionskih tenzida u čistim 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:182:196581

Čičak, Marijo. "Određivanje anionskih tenzida u čistim sustavima novim potenciometrijskim senzorom." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2014. https://urn.nsk.hr/urn:nbn:hr:182:196581

Čičak, Marijo. "Određivanje anionskih tenzida u čistim sustavima novim potenciometrijskim senzorom." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2014. https://urn.nsk.hr/urn:nbn:hr:182:196581

Čičak, M. (2014). 'Određivanje anionskih tenzida u čistim sustavima novim potenciometrijskim senzorom', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 16 November 2024, https://urn.nsk.hr/urn:nbn:hr:182:196581

Čičak M. Određivanje anionskih tenzida u čistim sustavima novim potenciometrijskim senzorom [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2014 [cited 2024 November 16] Available at: https://urn.nsk.hr/urn:nbn:hr:182:196581

M. Čičak, "Određivanje anionskih tenzida u čistim sustavima novim potenciometrijskim senzorom", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:182:196581

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Metadata
TitleOdređivanje anionskih tenzida u čistim sustavima novim potenciometrijskim senzorom
Title (english)Determination of anionic surfactants in pure systems by the new potentiometric sensor
AuthorMarijo Čičak
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 country2014-09-19, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Površinski aktivne tvari ili tenzidi su bifunkcionalne organske molekule koje se sastoje od hidrofilnog i hidrofobnog dijela. Dijele se u 4 grupe: anionske, kationske, neionske i amfolitske tenzide. Anionski tenzidi su najzastupljeniji i najčešće se koriste u obliku praškastih detergenata. Tenzide možemo analizirati različitim metodama kao što su titracijske, spektrofotometrijske i kromatografske metode. Za određivanje završne točke titracije i analizu tenzida najčešće se koriste potenciometrijske titracije koje koriste ionskoselektivne elektrode. Ispitivali smo utjecaj koncentracije titransa na oblik titracijskih krivulja zbog određivanja najniže koncentracije titransa koji će davati još uvijek dovoljno izraženu i uporabivu točku infleksije, čime bi se omogućilo i određivanje vrlo niskih koncentracija anionskih tenzida. Kao titrans smo koristili standardne otopine cetilpiridinijeva klorida (CPC) različitih koncetracija (c=1 x 10-3 mol/dm3, 1 x 10-4 mol/dm3, 5 x 10-5 mol/dm3), a kao analit su korištene otopine natrijeva dodecilsulfata (NaDDS) i otopine natrijeva dodecilbenzensulfonata (NaDBS) različitih koncetracija (c=1 x 10-3 mol/dm3, 1 x 10-4 mol/dm3, 5 x 10-5 mol/dm3).
Abstract (english)
Surface active agents or surfanctants are organic bifunctional moleculs consisting of a hydrophilic and hydrophobic part. They are divided into 4 grups: anionic, cationic, nonionic and ampholytic surfactants. Anionic surfactants are the most common and most widely used in the form of powder detergents. Surfactants can be analyzed by various methods such as titration, spectrophotometric and chromatographic method. For determination of the equivalence point titration and analysis of surfactants are usually carried out by potentiometric titration using ion-selective electrode. We tested the influence of the concentration of titrant on shape of the titration curves to determine the lowest concentration of titrant that will still give sufficiently expressed and an usable inflection point, which should facilitate the determination of very low concentrations of anionic surfactants. Different concentrations of cetylpyridinium chloride (CPC, c=1 x 10-3 mol/dm3, 1 x 10-4 mol/dm3, 5 x 10-5 mol/dm3) were used as titrans and a solutions of sodium dodecylbenzene sulfonate (NaDBS, c=1 x 10-3 mol/dm3, 1 x 10-4 mol/dm3, 5 x 10-5 mol/dm3) and dodecylsulfate (NaDDS, c=1 x 10-3 mol/dm3, 1 x 10-4 mol/dm3, 5 x 10-5 mol/dm3) were used as the analyte.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:196581
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 on2016-07-13 07:44:29