Standard Test Method for Noncondensable Gases in C<sub>2</sub> and Lighter Hydrocarbon Products by Gas Chromatography

SIGNIFICANCE AND USE
The presence of trace amounts of hydrogen, oxygen, and carbon monoxide can have deleterious effects in certain processes using hydrocarbon products as feed stock. This test method is suitable for setting specifications, for use as an internal quality control tool and for use in development or research work.
SCOPE
1.1 This test method covers the determination of hydrogen, nitrogen, oxygen, and carbon monoxide in the parts per million volume (ppmv) range in C2 and lighter hydrocarbon products. This test method should be applicable to light hydrocarbons other than ethylene, but the test program did not include them.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information 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. For some specific hazard statements, see the Annex A1.

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Publication Date
30-Apr-2010
Current Stage
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ASTM D2504-88(2010) - Standard Test Method for Noncondensable Gases in C<sub>2</sub> and Lighter Hydrocarbon Products by Gas Chromatography
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D2504 − 88(Reapproved 2010)
Standard Test Method for
Noncondensable Gases in C and Lighter Hydrocarbon
2
1
Products by Gas Chromatography
This standard is issued under the fixed designation D2504; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope concentration of the gases to be determined is calculated from
the recorded peak heights or peak areas.Argon can be used as
1.1 This test method covers the determination of hydrogen,
a carrier gas for the determination of hydrogen in concentra-
nitrogen, oxygen, and carbon monoxide in the parts per million
tions below 100 ppmv. Argon, if present in the sample,
volume (ppmv) range in C and lighter hydrocarbon products.
2
interferes with oxygen determination.
This test method should be applicable to light hydrocarbons
other than ethylene, but the test program did not include them.
4. Significance and Use
1.2 The values stated in SI units are to be regarded as the
4.1 Thepresenceoftraceamountsofhydrogen,oxygen,and
standard. The values given in parentheses are for information
carbon monoxide can have deleterious effects in certain pro-
only.
cesses using hydrocarbon products as feed stock. This test
1.3 This standard does not purport to address all of the
method is suitable for setting specifications, for use as an
safety concerns, if any, associated with its use. It is the
internal quality control tool and for use in development or
responsibility of the user of this standard to establish appro-
research work.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For some specific
5. Apparatus
hazard statements, see the Annex A1.
5.1 Chromatograph—Any chromatographic instrument
2. Referenced Documents
havingeitherathermalconductivityorionizationdetectorwith
2
an overall sensitivity sufficient to detect 2 ppmv or less of the
2.1 ASTM Standards:
compounds listed in the scope, with a peak height of at least 2
D2505 Test Method for Ethylene, Other Hydrocarbons, and
mm without loss of resolution.
Carbon Dioxide in High-Purity Ethylene by Gas Chroma-
tography
5.2 Detectors—Thermal Conductivity—If a methanation re-
E260 Practice for Packed Column Gas Chromatography
actor is used, a flame ionization detector is also required. To
F307 Practice for Sampling Pressurized Gas for Gas Analy-
determine carbon monoxide with a flame ionization detector, a
sis
methanation reactor must be inserted between the column and
3
2.2 Other Standard:
the detector and hydrogen added as a reduction gas. Details on
Compressed GasAssociation Booklets G-4 and G-4.1 on the
the preparation and use of the reactor are given in Appendix
use of oxygen.
X1.
3. Summary of Test Method 5.3 Constant-Volume Gas Sampling Valve.
3.1 The sample is separated in a gas-solid chromatographic
5.4 Column—Any column or set of columns that is capable
system using molecular sieves as the solid adsorbent. The
of resolving the components listed in the scope can be used.
Copper, stainless steel, or aluminum tubing may be used. The
1 columns chosen must afford a resolution such that the depth of
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of the valleys ahead of the trace peak is no less than 50 % of the
Subcommittee D02.D0.02 on Ethylene.
trace peak height.
Current edition approved May 1, 2010. Published May 2010. Originally
E1
approved in 1966. Last previous edition approved in 2004 as D2504 – 88 (2004) .
5.5 Recorder—A recorder with a full-scale response of 2 s
DOI: 10.1520/D2504-88R10.
or less and a maximum rate of noise of 60.3 % of full scale.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.6 Oven—The oven used for activating molecular sieves
Standards volume information, refer to the standard’s Document Summary page on
must be maintained at 260 to 288°C (500 to 550°F) and should
the ASTM website.
3 bedesignedsothatthegasesmaybedisplacedcontinuouslyby
Available from Compressed Gas Association (CGA), 4221 Walney Rd., 5th
Floor, Chantilly, VA 20151-2923, http://www.cganet.com. a stream of inert gas. The oven may be a thermostated piece of
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
1

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D2504 − 88 (2010)
1-in. pipe about 0.3 m (1 ft) in length. Electrical heating tapes erate the column in the oven in the same manner as
...

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