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A method for the determination of polyunsaturated fatty acid methyl esters in biodiesel: Results of an interlaboratory study
Author(s) -
Schober Sigurd,
Seidl Ingrid,
Meinitzer Andreas,
Mittelbach Martin
Publication year - 2009
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.200800266
Subject(s) - en 14214 , biodiesel , chemistry , chromatography , polyunsaturated fatty acid , fatty acid methyl ester , fatty acid , gas chromatography , wax , detection limit , organic chemistry , biodiesel production , catalysis
A gas chromatographic method for the determination of fatty acid methyl esters with four or more double bonds in biodiesel was developed and tested. The method is based on gas chromatographic separation on a wax capillary column using methyl tricosanoate as internal standard. The performance of the method was proved with the participation of 11 European laboratories by a Round Robin test on six different biodiesel samples containing different amounts of polyunsaturated fatty acid methyl esters. The results showed that the precision is sufficient around the EN 14214 limit of 1 % (m/m). At lower concentrations the variation is too high. The scope of the application can be given between as 0.6 and 1.5%.