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Standard Test Method for Separation of Representative Aromatics and Nonaromatics Fractions of High-Boiling Oils by Elution Chromatography
Přeložit název
NORMA vydána dne 1.3.2023
Označení normy: ASTM D2549-23
Datum vydání normy: 1.3.2023
Kód zboží: NS-1103707
Počet stran: 6
Přibližná hmotnost: 18 g (0.04 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
aromatics fraction, elution chromatography, high-boiling oils, nonaromatics fraction,, ICS Number Code 75.080 (Petroleum products in general)
Significance and Use | ||||||||||
5.1?The determination of compound types by mass spectrometry requires, in some instances, a preliminary separation of the petroleum sample into representative aromatics and nonaromatics fractions, as in Test Methods D2425, D2786, and D3239. This test method provides a suitable separation technique for this application. |
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1. Scope | ||||||||||
1.1?This test method covers the separation and determination of representative aromatics and nonaromatics fractions from hydrocarbon mixtures that boil between 232 ?C and 538 ?C (450 ?F and 1000 ?F). Alternative procedures are provided for the separation of 2 g or 10 g of hydrocarbon mixture. Note 1:?Some components may not be eluted from the
chromatographic column for some types of samples under the
conditions used in this method.
Note 2:?Test Method D2007 is an alternative method of
separating high-boiling oils into polar compounds, aromatics, and
saturates fractions.
1.2?An alternative procedure is provided to handle samples boiling below 232 ?C (450 ?F), but whose 5 % point is above 178 ?C (350 ?F) as determined by Test Method D2887. This procedure is given in Appendix X1. 1.3?The values stated in acceptable SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only. 1.4?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. 1.5?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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2. Referenced Documents | ||||||||||
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