ASTM D3701-01
(Test Method)Standard Test Method for Hydrogen Content of Aviation Turbine Fuels by Low Resolution Nuclear Magnetic Resonance Spectrometry
Standard Test Method for Hydrogen Content of Aviation Turbine Fuels by Low Resolution Nuclear Magnetic Resonance Spectrometry
SCOPE
1.1 This test method covers the determination of the hydrogen content of aviation turbine fuels.
1.2 Use Test Method D 4808 for the determination of hydrogen in other petroleum liquids.
1.3 The values stated in SI units are to be regarded as standard. The preferred units are mass percent hydrogen.
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 a specific precautionary statement, see 6.1.
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An American National Standard
Designation:D3701–01
Designation: 338/98
Standard Test Method for
Hydrogen Content of Aviation Turbine Fuels by Low
1
Resolution Nuclear Magnetic Resonance Spectrometry
This standard is issued under the fixed designation D 3701; 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* means of comparing the theoretical hydrogen content of the
standard with that of the sample, the result being expressed as
1.1 This test method covers the determination of the hydro-
the hydrogen content (percent mass basis) in the sample.
gen content of aviation turbine fuels.
1.2 Use Test Method D 4808 for the determination of
4. Significance and Use
hydrogen in other petroleum liquids.
4.1 The combustion quality of aviation turbine fuel has
1.3 The values stated in SI units are to be regarded as
traditionally been controlled in specifications by such tests as
standard. The preferred units are mass percent hydrogen.
smoke point (seeTest Method D 1322), smoke volatility index,
1.4 This standard does not purport to address all of the
aromatic content of luminometer number (see Test Method D
safety concerns, if any, associated with its use. It is the
1740). Evidence is accumulating that a better control of the
responsibility of the user of this standard to establish appro-
quality may be obtained by limiting the minimum hydrogen
priate safety and health practices and determine the applica-
content of the fuel.
bility of regulatory limitations prior to use. For a specific
4.2 Existing methods allow the hydrogen content to be
precautionary statement, see 6.1.
calculated from other parameters or determined by combustion
2. Referenced Documents techniques.Themethodspecifiedprovidesaquick,simple,and
more precise alternative to these methods.
2.1 ASTM Standards:
D 1322 Test Method for Smoke Point of Kerosine and
5. Apparatus
2
Aviation Turbine Fuel
4
5.1 Nuclear Magnetic Resonance Spectrometer —A low-
D 1740 Test Method for Luminometer Numbers of Avia-
2 resolution continuous-wave instrument capable of measuring a
tion Turbine Fuels
nuclearmagneticresonanceofhydrogenatoms,andfittedwith:
D 4057 Practice for Manual Sampling of Petroleum and
3 5.1.1 Excitation and Detection Coil, of suitable dimensions
Petroleum Products
to contain the test cell.
D 4808 Test Method for Hydrogen Content of Light Distil-
5.1.2 Electronic Unit,tocontrolandmonitorthemagnetand
lates, Middle Distillates, Gas Oils, and Residua by Low-
3 coil and containing:
Resolution Nuclear Magnetic Resonance Spectroscopy
3. Summary of Test Method
4
3.1 A sample of the material is compared in a continuous
This method has been written around the NewportAnalyzer Mark IIIF (Oxford
wave, low-resolution, nuclear magnetic resonance spectrom- Analytical Instruments, Ltd., Oxford, England) and the details of the method should
be read in conjunction with the manufacturer’s handbook.
eter with a reference standard sample of a pure hydrocarbon.
This particular instrument was the only instrument available when the precision
The results from the integrator on the instrument are used as a
program was carried out. Any similar instrument would be accepted into the above
method provided the new instrument was adequately correlated and proved to be
statistically similar.
1
This test method is under the jurisdiction of ASTM Committee D02 on The NewportAnalyzer Mark IIIF is no longer in production and was replaced by
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee the manufacturer with the Newport 4000. The Newport 4000 model instrument has
D02.03 on Elemental Analysis. been demonstrated to provide equivalent results to those obtained with the Mark III
Current edition approved Nov. 10, 2001. Published December 2001. Originally models which were used to generate the precision data. As of the mid-1990’s
published as D 3701 – 78. Last previous edition D 3701 – 99a. however, the Newport 4000 instrument is no longer being manufactured by the
2
Annual Book of ASTM Standards, Vol 05.01. vendor. No newer models are currently being manufactured as replacements for the
3
Annual Book of ASTM Standards, Vol 05.02. Newport 4000 instrument.
*A Summary of Changes section appears at the end of this standard.
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D3701–01
5.1.2.1 Circuits, to control and adjust the radio frequency 7. Sampling
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