undergraduate thesis
Titrant selection for anionic surfactant determination with the new potentiometric sensor

Tomislav Perković (2014)
Metadata
TitleOdabir titransa za određivanje anionskih tenzida novim potenciometrijskim senzorom
AuthorTomislav Perković
Mentor(s)Mirela Samardžić (thesis advisor)
Olivera Galović (thesis advisor)
Abstract
Tenzidi ili površinske tvari su bifunkcionalni organski spojevi koji se sastoje od hidrofilnog i hidrofobnog dijela. Zbog tog svojstva imaju tendenciju skupljanja na granici dviju faza. Tenzidi se dijele na kationske, anionske, neionske i amfolitske. Anionski tenzidi su površinski aktivne tvari s jednom ili više funkcionalnih grupa, koje u vodenim otopinama ioniziraju dajući negativno nabijene površinski aktivne organske ione. Anionski tenzidi se mogu određivati pomoću titracijskih metoda, spektrofotometrijskih metoda, kromatografskih metoda, itd. Pri određivanju anionskih tenzida titracijskim metodama, danas se najčešće koriste ionsko-selektivne elektrode (ISE) kao potenciometrijski senzori. Pri potenciometrijskom određivanju anionskih tenzida koristili smo ionsko-selektivnu elektrodu čija je membrana sadržavala ionski par dimetildioktadecilamonijevtetrafenilborat (DMDODA-TPB). Određivali smo utjecaj titransa na oblik titracijskih krivulja u cilju određivanja najpovoljnijeg titransa. Kao titranse smo koristili cetilpiridinijev klorid (CPC), 1,3-didecil-2-metilimidazolijev klorid (DMIC), Hyamine i heksadeciltrimetilamonijev bromid (CTAB) koncentracije 4 x 10−3 mol/dm3. Kao analiti su korištene otopine natrijeva dodecilsulfata (NaDDS) i natrijeva dodecilbenzensulfonata (NaDBS) koncetracije 4 x 10−3 mol/dm3.
Keywordsanionic surfactants potentiometric titration ion-selective electrode
Parallel title (English)Titrant selection for anionic surfactant determination with the new potentiometric sensor
GranterSveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za kemiju
PlaceOsijek
StateCroatia
Scientific field, discipline, subdisciplineNATURAL SCIENCES
Chemistry
Study programme typeuniversity
Study levelundergraduate
Study programmeChemistry
Academic title abbreviationuniv. bacc. chem.
Genreundergraduate thesis
Language Croatian
Defense date2014
Parallel abstract (English)
Surfactants or surface-active agents are bifunctional organic compounds consisting of hydrophilic and hydrophobic interactions. Due to that attribute they have a tendency of aggregating on the boundary of two phases.There are foure types of surfactants: cationic, anionic, nonionic and ampholytic. Anionic surfactants are surface-active agents that have one or more functional groups that ionize in water solutions, giving negatively charge surface active organic ions. Anionic sufactants may be determined by means of titration method of analysis, spectrophotometric methods, chromatographical methods, etc. In determining anionic surfactants through applying the titration method of analysis, in the present day, ion-selective electrodes (ISE) are most frequently used as potentiometric sensors. For potentiometric determination of anionic surfactants, we applied an ionselective electrode whose membrane had contained ion pair dimethyldioctadecylammonium-tetraphenylborate (DMDODA-TPB). We determined the impact of titrans on the titration curves in order to determine the most favorable titrant. As titrants we used cetylpyridinium chloride (CPC), 1,3-didecyl-2-methylimidazolium chloride (DMIC), Hyamin and hexadecyltrimethylammonium bromide (CTAB) at concentration of 4 x 10-3 mol/dm³.Sodium dodecyl sulfate (NaDDS) and sodium dodecylbenzenesulfonate (NaDBS) at concentrations of 4 x 10−3 mol / dm3 were used as analytes.
Parallel keywords (Croatian)anionski tenzidi potenciometrijske titracije ionsko-selektivne elektrode
Resource typetext
Access conditionOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:182:070436
CommitterSanda Hasenay