Astm D 3239 – 91 (Reapproved 2001) pdf free download

Standard Test Method for
Aromatic Types Analysis of Gas-Oil Aromatic Fractions by
High Ionizing Voltage Mass Spectrometry1

This standard is issued under the fixed designation D 3239; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This test method2 covers the determination by high
ionizing voltage, low resolution mass spectrometry of 18
aromatic hydrocarbon types and 3 aromatic thiophenotypes in
straight run aromatic petroleum fractions boiling within the
range from 205 to 540°C (400 to 1000°F) (corrected to
atmospheric pressure). Samples must be nonolefinic, must
contain not more than 1 mass % of total sulfur, and must
contain not more than 5 % nonaromatic hydrocarbons. Composition data are in volume percent.
NOTE 1—Although names are given to 15 of the compound types
determined, the presence of other compound types of the same empirical
formulae is not excluded. All other compound types in the sample,
unidentified by name or empirical formula, are lumped into six groups in
accordance with their respective homologous series.

1.2 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.

1.3 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.

2. Referenced Documents

2.1 ASTM Standards:
D 2549 Test Method for Separation of Representative Aromatics and Nonaromatics Fractions of High-Boiling Oils
by Elution Chromatography3
D 2786 Test Method for Hydrocarbon Types Analysis of
Gas-Oil Saturate Fractions by High Ionizing Voltage Mass
E 137 Practice for Evaluation of Mass Spectrometers for.

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