Причина отмены This test method covered the determination by high ionizing voltage mass spectrometry of seven saturated hydrocarbon types and one aromatic type in saturate petroleum fractions having average carbon numbers 16 through 32. The saturate types included alkanes (0-rings), single-ring naphthenes, and five fused naphthene types with 2, 3, 4, 5, and 6 rings. The nonsaturate type was monoaromatic. Noncondensed naphthenes were analyzed as single rings. Samples must have been nonolefinic and must have contained less than 5 % by volume monoaromatic. Composition data were in volume percent.

Formerly under the jurisdiction of Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants, this test method was withdrawn without replacement in March 2023. This test method was created in 1969. Test method has a precision statement but no referenced research report. ASTM archives do not have a research report on file. The Form and Syle Manual requires a research report. The test method was originally developed for specific types of magnetic sector mass spectrometers and published calculations were based on such instrumentation. As a result, there is no easy mechanism to update the test method without method development. In addition, Committee D02 understands that this method may not be performed by many, if any, laboratories. ASTM will continue to provide copies of the test method for those that may need it. Committee D02.04M encourages members to submit potential replacement test method(s), based on newer technologies (e.g. MS-FIMS, GC-FIMS, NOISE, GC/MS etc.) that can be developed into ASTM approved test method(s).

Значение и использование

5.1 A knowledge of the hydrocarbon composition of process streams and petroleum products boiling within the range of 205 °C to 540 °C (400 °F to 1000 °F) 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.

5.2 This test method, when used together with Test Method D3239, provides a detailed analysis of the hydrocarbon composition of such materials.

Область применения

1.1 This test method2 covers the determination by high ionizing voltage mass spectrometry of seven saturated hydrocarbon types and one aromatic type in saturate petroleum fractions having average carbon numbers 16 through 32. The saturate types include alkanes (0-rings), single-ring naphthenes, and five fused naphthene types with 2, 3, 4, 5, and 6 rings. The nonsaturate type is monoaromatic. Noncondensed naphthenes are analyzed as single rings. Samples must be nonolefinic and must contain less than 5 volume % monoaromatic. Composition data are in volume percent.

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.