ASTM D4815-03
(Test Method)Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography
Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C<sub>1</sub> to C<sub>4</sub> Alcohols in Gasoline by Gas Chromatography
SCOPE
1.1 This test method covers the determination of ethers and alcohols in gasolines by gas chromatography. Specific compounds determined are methyl tert-butylether (MTBE), ethyl tert-butylether (ETBE), tert-amylmethylether (TAME), diisopropylether (DIPE), methanol, ethanol, isopropanol, n-propanol, isobutanol, tert-butanol, sec-butanol, n-butanol, and tert-pentanol (tert-amylalcohol).
1.2 Individual ethers are determined from 0.1 to 20.0 mass %. Individual alcohols are determined from 0.1 to 12.0 mass %. Equations used to convert to mass % oxygen and to volume % of individual compounds are provided.
1.3 Alcohol-based fuels, such as M-85 and E-85, MTBE product, ethanol product, and denatured alcohol, are specifically excluded from this test method. The methanol content of M-85 fuel is considered beyond the operating range of the system.
1.4 Benzene, while detected, cannot be quantified using this test method and must be analyzed by alternate methodology (see Test Method D 3606 or D 4420).
1.5 The values stated in SI units are to be regarded as standard. Alternate units, in common usage, are also provided to increase clarity and aid the users of this test method.
1.6 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.
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An American National Standard
Designation:D4815–03
Standard Test Method for
Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl
Alcohol and C to C Alcohols in Gasoline by Gas
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1
Chromatography
This standard is issued under the fixed designation D 4815; 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* D 1744 Test Method for Water in Liquid Petroleum Prod-
2
ucts by Karl Fischer Reagent
1.1 This test method covers the determination of ethers and
D 3606 Test Method for the Determination of Benzene and
alcohols in gasolines by gas chromatography. Specific com-
Toluene in Finished Motor and Aviation Gasoline by Gas
pounds determined are methyl tert-butylether (MTBE), ethyl
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Chromatography
tert-butylether (ETBE), tert-amylmethylether (TAME), diiso-
D 4052 Test Method for Density and Relative Density of
propylether (DIPE), methanol, ethanol, isopropanol,
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Liquids by Digital Density Meter
n-propanol, isobutanol, tert-butanol, sec-butanol, n-butanol,
D 4057 Practice for Manual Sampling of Petroleum and
and tert-pentanol (tert-amylalcohol).
3
Petroleum Products
1.2 Individual ethers are determined from 0.1 to 20.0 mass
D 4307 PracticeforPreparationofLiquidBlendsforUseas
%. Individual alcohols are determined from 0.1 to 12.0 mass
3
Analytical Standards
%. Equations used to convert to mass % oxygen and to volume
D 4420 Test Method for Determination of Aromatics in
% of individual compounds are provided.
3
Finished Gasoline by Gas Chromatography
1.3 Alcohol-based fuels, such as M-85 and E-85, MTBE
product, ethanol product, and denatured alcohol, are specifi-
3. Terminology
cally excluded from this test method. The methanol content of
3.1 Definitions of Terms Specific to This Standard:
M-85 fuel is considered beyond the operating range of the
3.1.1 low volume connector—aspecialunionforconnecting
system.
two lengths of tubing 1.6-mm inside diameter and smaller.
1.4 Benzene, while detected, cannot be quantified using this
Sometimes this is referred to as zero dead volume union.
test method and must be analyzed by alternate methodology
3.1.2 oxygenate—any oxygen-containing organic com-
(see Test Method D 3606 or D 4420).
pound that can be used as a fuel or fuel supplement, for
1.5 The values stated in SI units are to be regarded as
example, various alcohols and ethers.
standard. Alternate units, in common usage, are also provided
3.1.3 split ratio—in capillary gas chromatography, the ratio
to increase clarity and aid the users of this test method.
of the total flow of carrier gas to the sample inlet versus the
1.6 This standard does not purport to address all of the
flow of the carrier gas to the capillary column, expressed by
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- split ratio 5 ~S 1 C!/C (1)
priate safety and health practices and determine the applica-
where:
bility of regulatory limitations prior to use.
S = flow rate at the splitter vent, and
C = flow rate at the column outlet.
2. Referenced Documents
3.1.4 tert-amyl alcohol—tert-pentanol.
2.1 ASTM Standards:
3.2 Acronyms:
D 1298 Test Method for Density, Relative Density (Specific
3.2.1 DIPE—diisopropylether.
Gravity), or API Gravity of Crude Petroleum and Liquid
3.2.2 ETBE—ethyl tert-butylether.
2
Petroleum Products by Hydrometer Method
3.2.3 MTBE—methyl tert-butylether.
3.2.4 TAME—tert-amyl methylether.
1 3.2.5 TCEP—1,2,3-tris-2-cyanoethoxypropane—a gas
This test method is under the jurisdiction of ASTM Committee D02 on
chromatographic liquid phase.
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.04 on Hydrocarbon Analysis.
Current edition approved May 10, 2003. Published June 2003. Originally
e1
approved in 1989. Last previous edition approved in 1999 as D 4815–99 .
2 3
Annual Book of ASTM Standards, Vol 05.01. Annual Book of ASTM Standards, Vol 05.02.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D4815–03
TABLE 1 Pertinent Physical Constants and Retention
3.2.6 WCOT—a type of capillary gas chromatographic col-
Characteristics for TCEP/WCOT Column Set Conditions
umn prepared by coating the inside of the capillary with a thin
as in Table 2
film of stationary phase.
Relative Retention
Relative
Time
Retention Molecular Density at
Component
4. Summary of Test M
...
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