1.1”This test method covers the quantification of the fatty acid methyl esters (FAME) content in aviation turbine fuel in the range of 10”’mg/kg to 400”’mg/kg by measuring infrared (IR) transmission before, during, and after FAME is converted to molecules that absorb in a different spectral region than FAME using a selective chemical reaction facilitated by a suitable catalyst.
Note 1:”This test method detects all FAME components with peak IR absorbance at approximately 1749 cm-1 and C8 to C22 carbon chain length. The accuracy of this test method is based on the molecular weight of C16 to C18 FAME species. The presence of other FAME species with different molecular weights could affect the accuracy.
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