ASTM-D7371 › Standard Test Method for Determination of Biodiesel (Fatty Acid Methyl Esters) Content in Diesel Fuel Oil Using Mid Infrared Spectroscopy (FTIR-ATR-PLS Method)
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1.1 This test method covers the determination of the content of fatty acid methyl esters (FAME) biodiesel in diesel fuel oils. It is applicable to concentrations from 1.00 to 20 volume % (see ). This procedure is applicable only to FAME. Biodiesel in the form of fatty acid ethyl esters (FAEE) will cause a negative bias.
Note 1: Using the proper ATR sample accessory, the range maybe expanded from 1 to 100 volume %, however precision data is not available above 20 volume %.
1.2 The values stated in SI units of measurement are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
5.1 Biodiesel is a blendstock commodity primarily used as a value-added blending component with diesel fuel.
5.2 This test method is applicable for quality control in the production and distribution of diesel fuel and biodiesel blends containing FAME.
biodiesel; biodiesel blend; biodiesel (FAME) content; FAME; fatty acid methyl esters; infrared spectroscopy; ICS Number Code 75.160.20 (Liquid fuels)
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Oct. 15, 2014