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Fatty Acid Methyl Ester Content of Fuels

Method Gas Chromatography – Mass Spectrometry
Standards

What is it used for?

Fatty Acid Methyl Esters (FAME) are a primary component of biodiesel, usually generated through esterification of vegetable oils.  As such, they are a good marker for biodiesel content in diesel fuel.

 

How does it work?

A portion of the diesel fuel is dissolved in solvent and analysed by gas chromatography against calibration standards to determine the proportion of FAME present in the sample.

 

What do the results tell us?

% of biodiesel in the diesel fuel.  This is important in some applications where biodiesel content is regulated in any way, for instance – pump diesel in the UK can contain up to 7% FAME.

 

Equally, in some applications, the use of biodiesel is not advisable because of it’s reduced calorific value or susceptibility to biological breakdown compared with conventional diesel.

 

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