ASTM D7806-20
(Test Method)Standard Test Method for Determination of Biodiesel (Fatty Acid Methyl Ester) and Triglyceride Content in Diesel Fuel Oil Using Mid-Infrared Spectroscopy (FTIR Transmission Method)
Standard Test Method for Determination of Biodiesel (Fatty Acid Methyl Ester) and Triglyceride Content in Diesel Fuel Oil Using Mid-Infrared Spectroscopy (FTIR Transmission Method)
SIGNIFICANCE AND USE
5.1 Biodiesel is a fuel 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.
5.3 The use of triglycerides in fuels is not approved for transportation applications within any ASTM specification. This test method allows the quantification of triglyceride concentration in biodiesel blends, thus enabling detection of out-of-specification blending.
5.4 This test method is fast, simple to run, inexpensive and requires no sample preparation.
SCOPE
1.1 This test method covers the determination of fatty acid methyl ester (FAME) biodiesel and triglyceride (TAG) concentrations in traditional diesel and renewable diesel fuel blends using a portable mid-infrared spectrometer.
1.2 The method applies to samples with biodiesel concentrations from 3 % to 40 % by volume. Additionally, it applies to samples with biodiesel concentrations from 2 % to 27 % by volume which contain triglycerides concentrations from 1 % to 10 % by volume. Triglycerides from 2 % to 10 % by volume can be determined in samples of diesel having biodiesel concentrations from 3 % to 27 % by volume. FAME and triglyceride can be simultaneously determined outside these stated ranges, but the stated precision estimates do not apply.
1.3 The method is not able to distinguish TAG and FAME if the TAG concentrations is below 0.142× the measured FAME concentrations.
1.4 This procedure is not appropriate for the determination of the concentration of biodiesel in the form of fatty acid ethyl esters (FAEE), see Section 6 for further discussion of possible interferences.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7806 − 20
Standard Test Method for
Determination of Biodiesel (Fatty Acid Methyl Ester) and
Triglyceride Content in Diesel Fuel Oil Using Mid-Infrared
1
Spectroscopy (FTIR Transmission Method)
This standard is issued under the fixed designation D7806; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This test method covers the determination of fatty acid
methylester(FAME)biodieselandtriglyceride(TAG)concen-
2. Referenced Documents
trations in traditional diesel and renewable diesel fuel blends
2
2.1 ASTM Standards:
using a portable mid-infrared spectrometer.
D975Specification for Diesel Fuel
1.2 The method applies to samples with biodiesel concen-
D1298Test Method for Density, Relative Density, or API
trations from 3% to 40% by volume. Additionally, it applies
Gravity of Crude Petroleum and Liquid Petroleum Prod-
to samples with biodiesel concentrations from 2% to 27% by
ucts by Hydrometer Method
volumewhichcontaintriglyceridesconcentrationsfrom1%to
D1655Specification for Aviation Turbine Fuels
10% by volume. Triglycerides from 2% to 10% by volume
D4052Test Method for Density, Relative Density, and API
can be determined in samples of diesel having biodiesel
Gravity of Liquids by Digital Density Meter
concentrations from 3% to 27% by volume. FAME and
D4057Practice for Manual Sampling of Petroleum and
triglyceride can be simultaneously determined outside these
Petroleum Products
stated ranges, but the stated precision estimates do not apply.
D4177Practice for Automatic Sampling of Petroleum and
1.3 ThemethodisnotabletodistinguishTAGandFAMEif
Petroleum Products
the TAG concentrations is below 0.142× the measured FAME
D4307Practice for Preparation of Liquid Blends for Use as
concentrations.
Analytical Standards
D5854Practice for Mixing and Handling of Liquid Samples
1.4 This procedure is not appropriate for the determination
of Petroleum and Petroleum Products
of the concentration of biodiesel in the form of fatty acid ethyl
D6299Practice for Applying Statistical Quality Assurance
esters (FAEE), see Section 6 for further discussion of possible
and Control Charting Techniques to Evaluate Analytical
interferences.
Measurement System Performance
1.5 The values stated in SI units are to be regarded as the
D6300Practice for Determination of Precision and Bias
standard. The values given in parentheses are for information
Data for Use in Test Methods for Petroleum Products,
only.
Liquid Fuels, and Lubricants
1.6 This standard does not purport to address all of the
D6751Specification for Biodiesel Fuel Blend Stock (B100)
safety concerns, if any, associated with its use. It is the
for Middle Distillate Fuels
responsibility of the user of this standard to establish appro-
D7418Practice for Set-Up and Operation of Fourier Trans-
priate safety, health, and environmental practices and deter-
form Infrared (FT-IR) Spectrometers for In-Service Oil
mine the applicability of regulatory limitations prior to use.
Condition Monitoring
1.7 This international standard was developed in accor-
E131Terminology Relating to Molecular Spectroscopy
dance with internationally recognized principles on standard-
E168Practices for General Techniques of Infrared Quanti-
ization established in the Decision on Principles for the
tative Analysis
Development of International Standards, Guides and Recom-
E1655 Practices for Infrared Multivariate Quantitative
Analysis
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
2
Subcommittee D02.04.0F on Absorption Spectroscopic Methods. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 15, 2020. Published August 2020. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2012. Last previous edition approved in 2012 as D7806–12. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D7806-20. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7806 − 20
E2056Practice for Qualifying Spectrometers
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7806 − 12 D7806 − 20
Standard Test Method for
Determination of the FattyBiodiesel (Fatty Acid Methyl Ester
(FAME) Content of a Blend of Biodiesel and Petroleum-
Based Ester) and Triglyceride Content in Diesel Fuel Oil
Using Mid-Infrared Spectroscopy (FTIR Transmission
1
Method)
This standard is issued under the fixed designation D7806; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This test method covers the determination of fatty acid methyl ester (FAME) biodiesel and triglyceride (TAG)
concentrations in traditional diesel and renewable diesel fuel blends using a portable mid-infrared spectrometer.
1.2 The method applies to samples with biodiesel concentrations from 3 % to 40 % by volume. Additionally, it applies to
samples with biodiesel concentrations from 2 % to 27 % by volume which contain triglycerides concentrations from 1 % to 10 %
by volume. Triglycerides from 2 % to 10 % by volume can be determined in samples of diesel having biodiesel concentrations from
3 % to 27 % by volume. FAME and triglyceride can be simultaneously determined outside these stated ranges, but the stated
precision estimates do not apply.
1.3 The method is not able to distinguish TAG and FAME if the TAG concentrations is below 0.142× the measured FAME
concentrations.
1.4 This test method covers the determination of the content of biodiesel (fatty acid methyl esters—FAME) in diesel fuel oils.
It is applicable to concentrations from 1 to 30 volume %. This procedure is applicable only to FAME. This test method is procedure
is not appropriate for the determination of the concentration of biodiesel that is in the form of fatty acid ethyl esters
(FAEE).(FAEE), see Section 6 for further discussion of possible interferences.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.6 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D975 Specification for Diesel Fuel
D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by
Hydrometer Method
D1655 Specification for Aviation Turbine Fuels
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.04.0F on Absorption Spectroscopic Methods.
Current edition approved Sept. 1, 2012July 15, 2020. Published November 2012August 2020. Originally approved in 2012. Last previous edition approved in 2012 as
D7806 – 12. DOI: 10.1520/D7806-1210.1520/D7806-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7806 − 20
D4307 Practice for Preparation of Liquid Blends for Use as Analytical Standards
D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
D6300 Practice fo
...
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