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656190 - ČSN EN ISO 22854 - Kapalné ropné výrobky - Stanovení skupin uhlovodíků a kyslíkatých látek v automobilových benzinech a automobilovém palivu ethanol E85 - Metoda multidimenzionální plynové chromatografie | ||
| Název : 656190 - ČSN EN ISO 22854 - Kapalné ropné výrobky - Stanovení skupin uhlovodíků a kyslíkatých látek v automobilových benzinech a automobilovém palivu ethanol E85 - Metoda multidimenzionální plynové chromatografie
Označení normy : ČSN EN ISO 22854 Katalogové číslo : 513504 Třídící znak : 656190 Účinnost : 2022-03-01 Věstník : 2022.02 Strany : 36 Převzata :vyhlášením ve Věstníku - v angličtině TATO NORMA JE NEPLATNÁ | ||
| Cena : | 340.00 Kč (DPH= 0%), s DPH= 340.00 Kč | Nelze zakoupit |
| ANOTACE "ČSN EN ISO 22854 This document specifies the gas chromatographic (GC) method for the determination of saturated, olefinic and aromatic hydrocarbons in automotive motor gasoline and ethanol (E85) automotive fuel. Additionally, the benzene and toluene content, oxygenated compounds and the total oxygen content can be determined. This document defines two procedures, A and B. Procedure A is applicable to automotive motor gasoline with total aromatics of 19,32 % (V/V) up to 46,29 % (V/V); total olefins from 0,40 % (V/V) up to 26,85 % (V/V); oxygenates from 0,61 % (V/V) up to 9,85 % (V/V); oxygen content from 1,50 % (m/m) to 12,32 % (m/m); benzene content from 0,38 % (V/V) up to 1,98 % (V/V) and toluene content from 5,85 % (V/V) up to 31,65 % (V/V). The method has also been tested for individual oxygenates. A precision has been determined for a total volume of methanol from 1,05 % (V/V) up to 16,96 % (V/V); a total volume of ethanol from 0,50 % (V/V) up to 17,86 % (V/V); a total volume of MTBE from 0,99 % (V/V) up to 15,70 % (V/V), a total volume of ETBE from 0,99 % (V/V) up to 15,49 % (V/V), a total volume of TAME from 0,99 % (V/V) up to 5,92 % (V/V), and a total volume of TAEE from 0,98 % (V/V) up to 15,59 % (V/V). Although this test method can be used to determine higher-olefin contents of up to 50 % (V/V), the precision for olefins was tested only in the range from 0,40 % (V/V) to 26,85 % (V/V). Although specifically developed for the analysis of automotive motor gasoline that contains oxygenates, this test method can also be applied to other hydrocarbon streams having similar boiling ranges, such as naphthas and reformates. Procedure B describes the analysis of oxygenated groups (ethanol, methanol, ethers, C3 - C5 alcohols) in ethanol (E85) automotive fuel containing ethanol between 50 % (V/V) and 85 % (V/V). The gasoline is diluted with an oxygenate-free component to lower the ethanol content to a value below 20 % (V/V) before the analysis by GC. The sample can be fully analysed including hydrocarbons. Precision data for the diluted sample are only available for the oxygenated groups." | ||