20.500.12556/DKUM-82293 Vpliv matriksa na vsebnost 1,2-benzizotiazol-3(2h)-ona v zidnih barvah diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje Effect of matrix on the content of 1,2-benzisothiazol-3(2h)-one in wall paints Diplomsko nalogo smo namenili preučevanju vpliva matriksa na vsebnost biocida 1,2-benzizotiazol-3(2H)-ona (BIT-a) v vzorcih zidnih barv, ki jih proizvajajo v gospodarski družbi Helios TBLUS v Domžalah. Raziskavo smo izvedli na sedežu podjetja Helios v kemijsko-analitskem laboratoriju. Koncentracijo biocida smo določevali s pomočjo tekočinske kromatografije visoke ločljivosti (HPLC). Zaradi večje selektivnosti in občutljivosti metode smo meritve opravili z masnim detektorjem, kjer nas je zanimala natančna kvantifikacija BIT-a v vzorcih in komponentah zidnih barv. Testirali smo, kako na koncentracijo biocida vplivajo glavne komponente, ki sestavljajo premaz na vodni osnovi. Naš cilj analize vzorcev je bil določiti komponento premaza, ki ima največji vpliv na kvantitativno določanje biocida BIT v zidnih premazih. Osredotočili smo se na vpliv vode, veziva, polnila, pigmenta in omakala, ki ga je vseboval naš testni vzorec. Najprej smo vzorcu barve postopoma odvzemali glavne komponente in ugotavljali, kje je prišlo do največjih razlik med dodano in izmerjeno vrednostjo biocida. Nato smo analizirali še posamezne komponente premaza, pred in z dodano določeno koncentracijo BIT-a. Meritve kažejo, da ima največji vpliv na vsebnost BIT-a vezivo, saj smo pri analizi med dodano in izmerjeno koncentracijo BIT-a v vezivu opazili največjo razliko. Vsako meritev smo izvedli v treh paralelkah in tako preverili ponovljivost naših rezultatov. Kromatograme smo ovrednotili s programom Empower 3. Statistično obdelavo rezultatov smo izvedli s pomočjo programov Microsoft Excel in Power BI. In thesis effect of matrix on the content of 1,2-benzisothiazol-3(2H)-one (BIT) in wall paints, produced by the Helios TBLUS company in Domžale has been studied. The research was carried out at the headquarters of the Helios in the chemical-analytical laboratory. The biocide concentration was determined using a high-performance liquid chromatography (HPLC). Due to the higher selectivity and sensitivity of the method, the measurements were performed using a mass detector. We were interested in the exact quantification of BIT in samples and wall paint components and how the concentration of biocide is affected by main components that make up water-based coating. The objective of the study was to determine component of coating, that has the greatest influence on the quantitative determination of biocide BIT in wall coatings. The focus was on on the effect of solvent-water, binder, filler, pigment and dispersing agent that were present in test sample. First, the main components were gradually removed from the paint sample and it was determined where the largest differences between added and measured biocide occured. Then the individual components of coating were analysed, before and after addition of a certain concentration of BIT. The measurements show that binder has the greatest effect on BIT concentration, as we observed the largest difference between added and measured BIT concentration in binder. Each measurement was performed in three parallels. This assured the reproducibility of results. Chromatograms were evaluated with Empower 3 program. Statistical processing of the results was performed with help of Microsoft Excel and Power BI programs. izotiazolinoni biocidi barve na vodni osnovi 1 2-benzizotiazol-3(2H)-on tekočinska kromatografija isothiazolinones biocides water-based paints 1 2-benzisothiazol-3(2H)-one liquid chromatography true true false [N. Švajger] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2022-08-10 19:23:57 2022-09-07 07:20:40 2022-09-08 03:08:12 0000-00-00 00:00:00 2022 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (VIII, 25 f.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 543.544.5:667.633.22(043.2) 120525571 VS_Svajger_Neza_2022.pdf VS_Svajger_Neza_2022.pdf 1 74FFB930B129817485C4D482A3D289A3 ca65006201c1c9a2c8d51f4edb96faa997c9525b5c21c2110685a79fccfce7e4 ed8f53f9-2e1f-11ed-8d84-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=161976 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0