ASTM D4808-98

Standard Test Methods for Hydrogen Content of Light Distillates, Middle Distillates, Gas Oils, and Residua by Low-Resolution Nuclear Magnetic Resonance Spectroscopy

SCOPE
1.1 These test methods cover the determination of the hydrogen content of petroleum products ranging from atmospheric distillates to vacuum residua using a continuous wave, low-resolution nuclear magnetic resonance spectrometer. (Test Method D 3701 is the preferred method for determining the hydrogen content of aviation turbine fuels using nuclear magnetic resonance spectroscopy.)
1.2 Three test methods are included here that account for the special characteristics of different petroleum products and apply to the following distillation ranges:Test MethodPetroleum ProductsBoiling Range, °C (°F) (approximate)A Light Distillates15-260 (60-500)B Middle Distillates,200-370 (400-700) Gas Oils370-510 (700-950)C Residua510+ (950+ )
1.3 The preferred units are mass %.
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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 6.1.

General Information

• Status: Historical
• Publication Date: 09-Nov-2001
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.03 - Elemental Analysis

Relations

• Replaced By: ASTM D4808-01 - Standard Test Methods for Hydrogen Content of Light Distillates, Middle Distillates, Gas Oils, and Residua by Low-Resolution Nuclear Magnetic Resonance Spectroscopy
• Effective Date: 10-Nov-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: D 4808 – 98 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Methods for
Hydrogen Content of Light Distillates, Middle Distillates,
Gas Oils, and Residua by Low-Resolution Nuclear Magnetic
1
Resonance Spectroscopy
This standard is issued under the fixed designation D 4808; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Summary of Test Methods
1.1 These test methods cover the determination of the 3.1 A test specimen is compared in a continuous wave,
hydrogen content of petroleum products ranging from atmo- low-resolution nuclear magnetic resonance (NMR) spectrom-
spheric distillates to vacuum residua using a continuous wave, eter with a reference standard sample. The spectrometer
low-resolution nuclear magnetic resonance spectrometer. (Test records in a nondestructive fashion the absolute concentration
Method D 3701 is the preferred method for determining the of hydrogen atoms in the reference standard and test sample.
hydrogen content of aviation turbine fuels using nuclear The absolute hydrogen concentrations reported by the integra-
magnetic resonance spectroscopy.) tor on the NMR instrument for the standard and test specimens
1.2 Three test methods are included here that account for the are used as a means of comparing the theoretical hydrogen
special characteristics of different petroleum products and content of the standard with that of the sample, the result being
apply to the following distillation ranges: expressed as the hydrogen content (on a mass % basis) of the
sample.
Boiling Range, °C (°F)
Test Method Petroleum Products (approximate)
3.2 To ensure an accurate measure of the absolute hydrogen
A Light Distillates 15–260 (60–500)
content of the reference standard and sample, it is necessary to
B Middle Distillates, 200–370 (400–700)
ensure that the measured hydrogen integrator counts are always
Gas Oils 370–510 (700–950)
C Residua 510+ (950+ )
directly proportional to the absolute hydrogen content of the
standard and sample.
1.3 The preferred units are mass %.
3.3 Undercounting of the reference standard with respect to
1.4 This standard does not purport to address all of the
the sample is avoided in Test Methods B and C by dilution of
safety concerns, if any, associated with its use. It is the
the standard with a relaxation reagent solution. Undercounting
responsibility of the user of this standard to establish appro-
of highly viscous or solid test samples is avoided by dissolving
priate safety and health practices and determine the applica-
the sample in a non-hydrogen containing solvent, which
bility of regulatory limitations prior to use. For specific hazard
ensures that all of the weighed sample is in a fluid and
statements, see Section 6.1.
homogeneous solution at the time of measurement. An elevated
2. Referenced Documents
sample temperature at the time of measurement also ensures a
homogeneous liquid-phase sample.
2.1 ASTM Standards:
D 3701 Test Method for Hydrogen Content of Aviation
4. Significance and Use
Turbine Fuels by Low Resolution Nuclear Magnetic Reso-
2
4.1 The hydrogen content represents a fundamental quality
nance Spectrometry
of a petroleum product that has been correlated with many of
D 4057 Practice for Manual Sampling of Petroleum and
2
the performance characteristics of that product.
Petroleum Products
4.2 This test method provides a simple and more precise
D 5291 Test Methods for Instrumental Determination of
alternative to existing test methods, specifically combustion
Carbon, Hydrogen, and Nitrogen in Petroleum Products
3
techniques (Test Method D 5291) for determining the hydro-
and Lubricants
gen content on a range of petroleum products.
5. Apparatus
1
This test method is under the jurisdiction of ASTM Committee D-2 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
NOTE 1—This test method has been written around the Newport
D02.03 on Elemental Analysis.
Analyzer Mark IIIF or it’s replacement version, the Newport 4000
Current edition approved Dec. 10, 1998. Published February 1999 . Originally
(Oxford Analytical Instruments, Ltd., Oxford, England), and the details of
published as D 4808 – 88. Last previous edition D 4808 – 92 (1997).
2
the test method are to be read in conjunction with the manufacturer’s
Annual Book of ASTM Standards, Vol 05.02.
3
handbook.
Annual Book
...