ASTM D3237-97

Standard Test Method for Lead In Gasoline By Atomic Absorption Spectroscopy

SCOPE
1.1 This test method covers the determination of the total lead content of gasoline within the concentration range of 0.010 to 0.10 g of lead/U.S. gal (2.5 to 25 mg/L). This test method compensates for variations in gasoline composition and is independent of lead alkyl type.  
1.2 The values given in grams per U.S. gallon are to be regarded as the standard in the United States. Note that in other countries, other units can be preferred.
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 specific hazard statements, see Note 1 and Note 2.

General Information

• Status: Historical
• Publication Date: 09-Feb-1997
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants

Relations

• Replaced By: ASTM D3237-02 - Standard Test Method for Lead In Gasoline By Atomic Absorption Spectroscopy
• Effective Date: 10-Nov-2002

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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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 3237 – 97 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 Method for
1
Lead In Gasoline By Atomic Absorption Spectroscopy
This standard is issued under the fixed designation D 3237; 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. Consult the DoD Index of Specifications and
Standards for the specific year of issue which has been adopted by the Department of Defense.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the total 4.1 This test method is used to ensure compliance of trace
lead content of gasoline within the concentration range of lead as required by federal regulation for lead-free gasoline (40
0.010 to 0.10 g of lead/U.S. gal (2.5 to 25 mg/L). This test CFR part 80).
method compensates for variations in gasoline composition
5. Apparatus
and is independent of lead alkyl type.
1.2 The values given in grams per U.S. gallon are to be 5.1 Atomic Absorption Spectrometer, capable of scale ex-
regarded as the standard in the United States. Note that in other pansion and nebulizer adjustment, and equipped with a slot
burner and premix chamber for use with an air-acetylene flame.
countries, other units can be preferred.
1.3 This standard does not purport to address all of the 5.2 Volumetric Flasks, 50-mL, 100-mL, 250-mL, and 1-L
sizes.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 5.3 Pipets, 2-mL, 5-mL, 10-mL, 20-mL, and 50-mL sizes.
5.4 Micropipet, 100-μL, Eppendorf type or equivalent.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific hazard
6. Reagents
statements, see Note 1 and Note 2.
6.1 Purity of Reagents—Reagent grade chemicals shall be
2. Referenced Documents
used in all tests. Unless otherwise indicated, it is intended that
all reagents shall conform to the specifications of the Commit-
2.1 ASTM Standards:
2
D 1193 Specification for Reagent Water tee on Analytical Reagents of the American Chemical Society,
5
where such specifications are available.
D 1368 Test Method for Trace Concentrations of Lead in
3
Primary Reference Fuels 6.2 Purity of Water—Unless otherwise indicated, references
to water shall be understood to mean reagent water as defined
D 2550 Test Method for Water Separation Characteristics of
3
Aviation Turbine Fuels by Types II or III of Specification D 1193.
6
6.3 Aliquat 336 (tricapryl methyl ammonium chloride).
D 3116 Test Method for Trace Amounts of Lead in Gaso-
4
line 6.4 Aliquat 336/MIBK Solution (10 % volume per
volume)—Dissolve and dilute 100 mL (88.0 g) of Aliquat 336
D 4057 Practice for Manual Sampling of Petroleum and
4
Petroleum Products with MIBK to 1 L.
6.5 Aliquat 336/MIBK Solution (1 % volume per volume)—
3. Summary of Test Method
Dissolve and dilute 10 mL (8.8 g) of Aliquat 336 with MIBK
3.1 The gasoline sample is diluted with methyl isobutyl to1L.
ketone and the alkyl lead components are stabilized by reaction 6.6 Iodine Solution—Dissolve and dilute 3.0 g of iodine
with iodine and a quaternary ammonium salt. The lead content crystals with toluene to 100 mL.
of the sample is determined by atomic absorption flame
NOTE 1—Warning: Flammable. Vapor harmful.
spectrometry at 283.3 nm, using standards prepared from
reagent grade lead chloride. By the use of this treatment, all
5
Reagent Chemicals, American Chemical Society Specifications, American
alkyl lead compounds give identical response.
Chemical Society, Washington, DC. For suggestions on the testing of reagents not
listed by the American Chemical Society, see Analar Standards for Laboratory
1
This test method is under the jurisdiction of ASTM Committee D-2 on Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee and National Formulary, U.S. Pharmaceutical Convention, Inc. (USPC), Rockville,
D02.03 on Elemental Analysis. MD.
6
The sole source of supply of the solution known to the committee at this time
Current edition approved Feb. 10, 1997. Published June 1997. Originally
published as D 3237 – 73. Last previous edition D 3237 – 96. is General Mills Corp., Minneapolis, MN 55415. If you are aware of alternative
2
Annual Book of ASTM Standards, Vol 11.01. suppliers, please provide this infor
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