This European Standard specifies a wavelength-dispersive X-ray fluorescence (WDXRF) test method for the determination of the sulfur content in ethanol (E85) automotive fuel [3], containing ethanol between 50 % (V\/V) and 85 % (V\/V), from 5 mg\/kg to 20 mg\/kg, using instruments with either monochromatic or polychromatic excitation. NOTE 1 Sulfur contents higher than 20 mg\/kg can be determined after sample dilution with an appropriate solvent. However, the precision was not established for diluted samples. NOTE 2 For the purposes of this European Standard, the terms “% (m\/m)” and “% (V\/V)” are used to represent the mass fraction (\u00b5) and the volume fraction (?) of a material respectively. WARNING – The use of this Standard can 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 users of this 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 | undefined <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | 1 Scope 2 Normative references 3 Principle 4 Reagents and materials <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 5 Apparatus 6 Sampling <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 7 Preparation of calibration solutions 7.1 Interferences 7.1.1 Background <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 7.1.2 FP-Method 7.1.3 Correction table 7.2 Blank calibration solution 7.3 Stock solution 7.4 Calibration solutions 7.5 Storage and stability of the calibration solutions <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 8 Settings 8.1 Measuring parameters 8.2 Optimization 8.2.1 Monochromatic excitation 8.2.2 Polychromatic excitation 8.3 Performance check of the spectrometer 9 Calibration 9.1 General 9.2 Calibration solutions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 9.3 Calibration curves 9.3.1 Calibration without matrix correction 9.3.2 Calibration with matrix correction <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 9.4 Checking 10 Procedure <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 11 Expression of results 12 Precision 12.1 Repeatability 12.2 Reproducibility <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 13 Test report <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Annex A (informative)Fundamental parameters method background <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Liquid petroleum products. Determination of the sulfur content in Ethanol (E85) automotive fuel. Wavelength dispersive X-ray fluorescence spectrometric method<\/b><\/p>\n |