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Standard Test Method for Hydrocarbon Types in Middle Distillates by Mass Spectrometry
Automaticky preložený názov:
Štandardná skúšobná metóda pre druhy uhľovodíkov v stredných destilátov hmotnostnej spektrometrie
NORMA vydaná dňa 1.10.2009
Označenie normy: ASTM D2425-04(2009)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.10.2009
Kód tovaru: NS-20338
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
hydrocarbon types, mass spectrometry, middle distillates, Distillate fuels, Hydrocarbon content, Hydrocarbons, Mass spectrometry--petroleum, Middle distillate fuels, Virgin middle distillates, ICS Number Code 75.080 (Petroleum products in general)
Significance and Use | ||||
A knowledge of the hydrocarbon composition of process streams and petroleum products boiling within the range of 400 to 650°F (204 to 343°C) is useful in following the effect of changes in process variables, diagnosing the source of plant upsets, and in evaluating the effect of changes in composition on product performance properties. |
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1. Scope | ||||
1.1 This test method covers an analytical
scheme using the mass spectrometer to determine the hydrocarbon
types present in virgin middle distillates 204 to 343°C (400 to 650°F)
boiling range, 5 to 95 volume % as determined by Test Method D86.
Samples with average carbon number value of paraffins between
C12 and C16 and containing paraffins from
C10 and C18 can be analyzed. Eleven
hydrocarbon types are determined. These include: paraffins,
noncondensed cycloparaffins, condensed dicycloparaffins, condensed
tricycloparaffins, alkylbenzenes, indans or tetralins, or both,
CnH2n-10 (indenes, etc.), naphthalenes,
CnH2n-14 (acenaphthenes, etc.), Note 1—This test method was developed on Consolidated Electrodynamics Corporation Type 103 Mass Spectrometers. 1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety problems, if any, 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. For a specific warning statement, see 10.1. |
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2. Referenced Documents | ||||
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