This European Standard specifies a gas chromatographic method for the quantitative determination, in unleaded petrol having a final boiling point not greater than 220 \u00b0C, of individual organic oxygenate compounds in the range 0,17 % (m\/m) to 15 % (m\/m) in a direct analysis (without dilution), and total organically bound oxygen up to 3,9 % (m\/m). For samples for which one of the oxygenate compounds content is higher than 15 % (m\/m), a procedure with a dilution of the sample before the analysis is given. NOTE 1 The conversion from percent mass to percent volume is done using the calculation mentioned in 8.3 and 9.5.3. NOTE 2 Precision data are not available for an oxygenate compound content higher than 15 % (m\/m); see Introduction. NOTE 3 For the purposes of this European Standard, the terms “% (m\/m)” and “% (V\/V)” are used to represent respectively the mass fraction, \u00b5, respectively the volume fraction, ?. WARNING – The use of this European Standard can involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of users of this European Standard to take appropriate measures to ensure the safety and health of personnel prior to application of the standard, and fulfil statutory and regulatory requirements for this purpose.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references 3 Principle <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 4 Reagents and materials 4.1 Gases 4.2 Reagents for the preparation of calibration samples <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 4.3 Internal standards 4.4 Oxygenate free petrol 5 Apparatus 5.1 Gas chromatographic assembly 5.2 Other equipment <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 6 Sampling 7 Procedure 7.1 Setting up the apparatus <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 7.2 Calibration 7.3 Determination of density of the sample 7.4 Preparation of the test sample <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 7.5 Injection of the test portion 7.6 Examination of the chromatogram 8 Calculation 8.1 Calculation of mass of each component in the test sample 8.2 Calculation of each component in the sample as a percentage by mass <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 8.3 Calculation of each component in the sample as a percentage by volume <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 9 Procedure for the determination of a higher oxygenate compound content 9.1 General 9.2 Dilution of the sample <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 9.3 Preparation of the test sample D for analysis 9.4 Analysis of the test sample D 9.5 Calculation and expression of results 9.5.1 Calculation of the component of interest in the test sample D as a percentage by mass 9.5.2 Calculation of the component of interest in the sample as a percentage by mass 9.5.3 Calculation of the component of interest in the sample as a percentage by volume <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 10 Total organically bound oxygen content 11 Expression of results 12 Precision 12.1 General 12.2 Repeatability, r 12.3 Reproducibility, R <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 13 Test report <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Annex\u00a0A (informative)Guidance on the oxygen selective detection (O-FID) technique A.1 Description <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | A.2 Summary of the analysis conditions <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Liquid petroleum products. Determination of organic oxygenate compounds and total organically bound oxygen content in unleaded petrol. Method by gas chromatography (O-FID)<\/b><\/p>\n |