20.500.12556/DKUM-40833 DOLOČANJE VSEBNOSTI GLIKOLA V RABLJENIH OLJIH Z IR SPEKTROSKOPIJO DETERMINATION OF GLYCOL IN USED OILS BY IR SPECTROSCOPY Namen diplomskega dela je vpeljati in preveriti (validirati) analizno metodo za kvantitativno določitev vsebnosti glikola po standardni metodi ASTM E 2412:2010. S tem bi v laboratoriju podjetja Petrol d.d., kjer sem meritve opravljala, nadgradili tehniko za ugotavljanje glikola v rabljenih oljih. Do sedaj so imeli na infrardečem spektrometru s Fourierjevo transformacijo vpeljano le metodo za kvalitativno določitev vsebnosti glikola v oljih, ugotavljala se je le prisotnost oz. odsotnost glikola. Za kvantitativno določitev vsebnosti glikola sicer uporabljajo metodo plinske kromatografije, ki je zamudna, poleg tega je plinski kromatograf zelo zaseden z izvajanjem drugih analiz. Princip metode je priprava umeritvene krivulje ter primerjava rezultatov meritev med infrardečo spektroskopijo s Fourierjevo transformacijo in plinsko kromatografijo. Validacija analizne metode je obsegala določitev območja in linearnost, mejo določljivosti, točnost in natančnost meritev. The purpose of this thesis is to develop and validate an analytical method for the determination of glycol in accordance with the standard method ASTM E 2412:2010. As a result, the laboratory of Petrol d.d. will be able to use this upgraded technique for measuring and determining the glycol in used oils. Until now, only a qualitative method for determination of glycol content (presence or absence of glycol) in oils has been implemented on the FT-IR spectrometer. Quantitative determination of glycol content has been previously performed by gas chromatography, which is very time consuming. Furthermore, the gas chromatograph is used more often for other analyses. The principle of the proposed method is the preparation of the calibration curve. The results obtained with FT-IR were also compared to the results obtained with the GC method. The validation included determination of range and linearity, limit of quantification, accuracy and precision of measurements. validacija etilen glikol FT-IR analiza rabljeno olje validation ethylene glycol FT-IR analysis used oils true true false [D. Dugonjić] Slovenski jezik Angleški jezik Diplomsko delo 2013-06-20 16:17:20 2013-07-01 10:43:57 2022-05-03 03:06:27 2021-04-24 03:14:47 2013 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 543.422.3-74:547.422(043.2) 17476886 URN:SI:UM:DK:Y3IKHHWT VS_Dugonjic_Dijana_2013.pdf VS_Dugonjic_Dijana_2013.pdf 1 444D48114DBCDA7447B2AAC9AD8B83E9 f260613501b7d35899b6efe0dcc93b2840f67a82d1b9400512f246c2c5e77897 0a7d8f50-7c0a-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=56081 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0