GC-FID methodology validation for the fatty esters content determination in biodiesel with hexadecyl acetate as the internal standard was written by Braun, Joao V.;dos Santos, Vinicius O. B.;Fontoura, Luiz A. M.;Pereira, Evandro;Napp, Amanda;Seferin, Marcus;Lima, Jeane;Ligabue, Rosane;Vainstein, Marilene H.. And the article was included in Quimica Nova in 2017.Related Products of 1731-94-8 The following contents are mentioned in the article:
Biodiesel purity expressed as fatty esters content is one of its most important quality parameters. Although several instrumental methods have been employed, gas chromatog. with internal standard calibration has been the most used. Biodiesel is a very complex matrix, therefore finding a suitable internal standard (IS) is not straightforward. EN14103:2003 standard established Me heptadecanoate (C17:0) as IS. Since this fatty ester is naturally present in some biodiesel feedstock as tallow, that standard was reviewed in 2011, and Me nonadecanoate (C19:0) became the new IS. In turn, C19:0 produces a peak on the chromatogram that is difficult to resolve from Me linoeate (C18:2) and metyl linolenate (C18:3) ones. In this paper, a GC-FID method for the determination of the esters content in Me and Et biodiesel from canola and soy oils, using hexadecyl acetate as a new internal standard was validated. EN14103:2003 was used as reference method. Method selectivity, accuracy (t student parameter < 2.18 from both methods), repeatability (0.1-0.4%), intermediate precision (0.2-1.8%), and robustness (0.1-1.6%) were investigated and considered appropriate for the scope. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Related Products of 1731-94-8).
Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Related Products of 1731-94-8
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics