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BS EN 14078:2014

$102.76

Liquid petroleum products. Determination of fatty acid methyl ester (FAME) content in middle distillates. Infrared spectrometry method

Published By Publication Date Number of Pages
BSI 2014 20
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This European Standard specifies a test method for the determination of Fatty Acid Methyl Ester (FAME) content in diesel fuel or domestic heating fuel by mid infrared spectrometry, which applies to FAME contents of the three measurement ranges as follows:

  • range A: for FAME contents ranging from approx. 0,05 % (V/V) to approx. 3 % (V/V);

  • range B: for FAME contents ranging from approx. 3 % (V/V) to approx. 20 % (V/V);

  • range C: for FAME contents ranging from approx. 20 % (V/V) to approx. 50 % (V/V).

Principally, higher FAME contents can also be analysed if diluted; however, no precision data for results outside the specified range is available at present.

This test method was verified to be applicable to samples which contain FAME conforming to EN 14214. Reliable quantitative results are obtained only if the samples do not contain any significant amounts of other interfering components, especially esters and other carbonyl compounds which possess absorption bands in the spectral region used for quantification of FAME. If such interfering components are present, this test method is expected to produce higher values.

NOTE 1 For the purposes of this European Standard, the term “% (V/V)” is used to represent the volume fraction (φ) of a material.

NOTE 2 For conversion of grams FAME per litre (g FAME/l) to volume fraction, a fixed density for FAME of 883,0 kg/m3 is adopted.

WARNING — The use of this standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems 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.

PDF Catalog

PDF Pages PDF Title
5 Foreword
6 1 Scope
2 Normative references
3 Principle
7 4 Reagents and materials
5 Apparatus
6 Sampling and sample handling
7 Procedure
7.1 Selection and treatment of the cell
8 7.2 Cleaning of the cells
7.3 Selection of the path length
7.3.1 Range A
7.3.2 Range B
7.3.3 Range C
9 7.4 Calibration
7.4.1 General instructions
7.4.2 Preparation of calibration solutions
7.4.3 Calculation of the calibration function
10 7.5 Sample Preparation
7.6 Recording of infrared spectra
7.6.1 General instructions
7.6.2 Background and reference spectrum
7.6.3 Recording of spectra
11 7.6.4 Determination of the Extinction and the corrected Extinction
8 Calculation
8.1 Calculation of FAME content in grams per litre (g/l)
8.2 Unit conversion from FAME content from g/l to % (V/V)
12 9 Expression of results
10 Precision
10.1 General
10.2 Repeatability, r
10.3 Reproducibility, R
Table 1 — Precision statements
13 11 Test report
14 Annex A (informative) Specific adjustments for calibration and dilution
Table A.1 — Estimate data for the selection of path length and dilution factor
15 Figure A.1 — Example of an IR spectrum of diesel fuel (FAME free)
16 Figure A.2 — Example of an IR spectrum of diesel blend (5 % (V/V) FAME)
Figure A.3 — Absorption according to base line procedure for diesel blend (4 %(V/V) FAME)
17 Bibliography
BS EN 14078:2014
$102.76