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undergraduate thesis
Određivanje koncentracije tenzida u tekućinama za ispiranje usta
2015. urn:nbn:hr:182:707502
Drulak, Mateja
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Drulak, M. (2015). Određivanje koncentracije tenzida u tekućinama za ispiranje usta (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:707502

Drulak, Mateja. "Određivanje koncentracije tenzida u tekućinama za ispiranje usta." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2015. https://urn.nsk.hr/urn:nbn:hr:182:707502

Drulak, Mateja. "Određivanje koncentracije tenzida u tekućinama za ispiranje usta." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2015. https://urn.nsk.hr/urn:nbn:hr:182:707502

Drulak, M. (2015). 'Određivanje koncentracije tenzida u tekućinama za ispiranje usta', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 29 October 2024, https://urn.nsk.hr/urn:nbn:hr:182:707502

Drulak M. Određivanje koncentracije tenzida u tekućinama za ispiranje usta [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2015 [cited 2024 October 29] Available at: https://urn.nsk.hr/urn:nbn:hr:182:707502

M. Drulak, "Određivanje koncentracije tenzida u tekućinama za ispiranje usta", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:182:707502

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Metadata
TitleOdređivanje koncentracije tenzida u tekućinama za ispiranje usta
Title (english)Determination of surfactant concentration in mouthnasm liquids
AuthorMateja Drulak
MentorNikola Sakač (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2015-09-30, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
U ovom radu govori se o određivanju koncentracije tenzida u tekućinama za ispiranje usta. Tenzidi su organske tvari koje karakterizira hidrofoban i hidrofilan dio molekule. One su sastavni dio brojnih sredstva za čišćenje, ali i sredstva za osobnu higijenu. Postoje četiri vrste površinski aktivnih tvari (kationske, anionske, neionske i amfolitske), a u sastavu ispitanih tekućina za ispiranje usta nalaze se kationski i amfolitski tenzidi. Ispitivane vodice za ispiranje usta u svom sastavu imaju amfolitski tenzid kokamidopropil betain (CAPB) ili kationski tenzid cetilpiridinijev klorid (CPC). Sva mjerenja vršena su direktnom potenciometrijom preko uređaja Metrohm i programa Tiamo. Analizirana su četiri uzorka vodica za ispiranje usta (MW1, MW2, MW3 i MW5). Uz titracije čistih uzoraka, napravljene su i titracije sa standardnim dodatkom (CPC). Koncentracija tenzida u uzorku MW1 iznosi 3,3428·10-3 moldm-3, u uzorku MW2 3,81416·10-3 moldm-3, u uzorku MW3 1,4041·10-3 moldm-3 i u uzorku MW5 5,5593·10-3 moldm-3. Točka ekvivalencije određena je instrumentalno. Koncentracije su određene računski na temelju dobivenih podataka. Rezultati su prikazani grafički u ovisnosti elektromotorne sile o volumenu utrošenog titranta (SDS).
Abstract (english)
This paper deals with the determination of surfactants concentration in mouthwash liquids. Surfactants are organic matters which contain hydrophobic and hydrophilic part of molecule. They are main component in many cleaning personal hygiene products. There are four types of surfactants (cationic, anionic, nonionic and amphoteric), but only cationic and amphoteric surfactants are part of analyzed mouthwash liquids. Analyzed mouthwash liquids have amphoteric surfactant cocamidopropyl betaine (CAPB) or cationic surfactants cetylpyridinium chloride (CPC). All measurments were conducted by direct potentiometry with device Metrohm and softwere Tiamo. There were four samples of mouthwash liquids that were analyzed (MW1, MW2, MW3 and MW5). With titration of pure samples, there were also titration with known addition (CPC). The concetration of surfactant in sample MW1 is 3,3428·10-3 moldm-3, in sample MW2 3,81416·10-3 moldm-3, in sample MW3 1,4041·10-3 moldm-3 and in sample MW5 5,5593·10-3 moldm-3. Equivalent point was determined instrumentally. Concetrations are determined by obtained results. Results are presented by graphical representation of dependency electromotive force of spent titrant volume (SDS).
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:707502
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 10:49:35