ASTM-D6293 › Standard Test Method for Oxygenates and Paraffin, Olefin, Naphthene, Aromatic (O-PONA) Hydrocarbon Types in Low-Olefin Spark Ignition Engine Fuels by Gas Chromatography (Withdrawn 2009)
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Scope
1.1 This test method provides for the quantitative determination of oxygenates, paraffins, olefins, naphthenes, and aromatics in low-olefin spark-ignition engine fuels by multidimensional gas chromatography. Each hydrocarbon type can be reported either by carbon number (see ) or as a total through C
Note 1—There can be an overlap between the C
1.2 This test method is applicable for total olefins in the range from 0.05 to 13 mass %. The test method can quantitatively determine olefins in samples where the olefin concentration does not exceed 0.6 % C
1.3 This test method is not intended to determine individual hydrocarbon components except for those hydrocarbon types for which there is only one component within a carbon number. Individually determined hydrocarbons are benzene, toluene, cyclopentane, propane, propylene, and cyclopentene.
1.4 Precision data has only been obtained on samples containing MTBE. Application of this test method to determine other oxygenates shall be verified in the user's laboratory. Methanol cannot be determined and shall be quantitated by an appropriate oxygenate method such as Test Method D 4815 or D 5599. Methanol is fully resolved and does not interfere with the determination of other components or groups.
1.5 Although specifically written for spark-ignition engine fuels containing oxygenates, this test method can also be applied to other hydrocarbon streams having similar boiling ranges, such as naphthas and reformates.
1.6 The values stated in SI units are to be regarded as the standard.
1.7 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 and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
A knowledge of spark-ignition engine fuel composition is useful for regulatory compliance, process control, and quality assurance.
The quantitative determination of olefins and other hydrocarbon types in spark-ignition engine fuels is required to comply with government regulations.
This test method is not applicable to M85 and E85 fuels, which contain 85 % methanol and ethanol, respectively.
Keywords
aromatics; gas chromatography; gasoline, hydrocarbon type; multi-dimensional gas chromatography; naphthenes; olefins; oxygenates; paraffins; spark-ignition engine fuels
To find similar documents by ASTM Volume:
05.03 (Petroleum Products and Lubricants (III): D6138 - D6971)
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Document Number
ASTM-D6293-98(2003)e1
Revision Level
1998 R03(E1) EDITION
Status
Cancelled
Modification Type
Withdrawn
Publication Date
Aug. 1, 2003
Document Type
Test Method
Page Count
9 pages
Committee Number
D02.04.0L