Dr. Eliise Tammekivi – PhD thesis on the quantitative analysis of oils

Last Friday, on August 27, 2021, Eliise Tammekivi successfully defended her PhD thesis titled Derivatization and quantitative gas-chromatographic analysis of oils.

In the PhD thesis by Eliise, four derivatization procedures that are widely used for the analysis of oils in cultural heritage or archaeology were compared based on quantitative gas-chromatographic (GC) analysis. It was seen that the TMTFTH derivatization was the most suitable one for the GC analysis of fresh oils. An in-depth uncertainty estimation was performed for one of the derivatization procedures using the ISO GUM approach and the Monte Carlo method. Another one of the improved procedures was applied for the analysis of self-made artificially aged paint samples that had varying pigment to linseed oil ratio to see if the pigment concentration had an effect on the drying of the paint samples.

Additionally, small samples from two paint case study samples relevant to the history of Estonia – crucifix from Karja church and cupboard from Ruhnu island – were analyzed to obtain information about the materials in the paint samples. Finally, the improved quantitative method was used to quantify fatty acids present in yeast cells. 

Congratulations to you, Eliise!  

 

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