ASTM D3237-06
(Test Method)Standard Test Method for Lead in Gasoline by Atomic Absorption Spectroscopy
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.
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 6.6 and 6.8.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation:D3237–06
Standard Test Method for
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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.
1. Scope* with iodine and a quaternary ammonium salt. The lead content
of the sample is determined by atomic absorption flame
1.1 This test method covers the determination of the total
spectrometry at 283.3 nm, using standards prepared from
lead content of gasoline within the concentration range of
reagent grade lead chloride. By the use of this treatment, all
0.010 to 0.10 g of lead/U.S. gal (2.5 to 25 mg/L). This test
alkyl lead compounds give identical response.
method compensates for variations in gasoline composition
and is independent of lead alkyl type.
4. Significance and Use
1.2 The values given in grams per U.S. gallon are to be
4.1 This test method is used to ensure compliance of trace
regardedasthestandardintheUnitedStates.Notethatinother
leadasrequiredbyfederalregulationforlead-freegasoline(40
countries, other units can be preferred.
CFR part 80).
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Apparatus
responsibility of the user of this standard to establish appro-
5.1 Atomic Absorption Spectrometer, capable of scale ex-
priate safety and health practices and determine the applica-
pansion and nebulizer adjustment, and equipped with a slot
bility of regulatory limitations prior to use. For specific hazard
burnerandpremixchamberforusewithanair-acetyleneflame.
statements, see 6.6 and 6.8.
5.2 Volumetric Flasks, 50-mL, 100-mL, 250-mL, and 1-L
2. Referenced Documents sizes.
2 5.3 Pipets, 2-mL, 5-mL, 10-mL, 20-mL, and 50-mL sizes.
2.1 ASTM Standards:
5.4 Micropipet, 100-µL, Eppendorf type or equivalent.
D 1193 Specification for Reagent Water
D 1368 Test Method for Trace Concentrations of Lead in
6. Reagents
Primary Reference Fuels
6.1 Purity of Reagents—Reagent grade chemicals shall be
D 2550 TestMethodforWaterSeparationCharacteristicsof
3 used in all tests. Unless otherwise indicated, it is intended that
Aviation Turbine Fuels
all reagents shall conform to the specifications of the Commit-
D3116 Test Method for Trace Amounts of Lead in Gaso-
3 tee onAnalytical Reagents of theAmerican Chemical Society,
line
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where such specifications are available.
D 4057 Practice for Manual Sampling of Petroleum and
6.2 Purity of Water—Unless otherwise indicated, references
Petroleum Products
to water shall be understood to mean reagent water as defined
D 6299 Practice for Applying Statistical Quality Assurance
by Types II or III of Specification D 1193.
Techniques to Evaluate Analytical Measurement System
6.3 Aliquat 336 (tricapryl methyl ammonium chloride).
Performance
6.4 Aliquat 336/MIBK Solution (10 % volume per
volume)—Dissolve and dilute 100 mL (88.0 g) of Aliquat 336
3. Summary of Test Method
with MIBK to 1 L.
3.1 The gasoline sample is diluted with methyl isobutyl
6.5 Aliquat 336/MIBK Solution (1 % volume per volume)—
ketoneandthealkylleadcomponentsarestabilizedbyreaction
Dissolve and dilute 10 mL (8.8 g) of Aliquat 336 with MIBK
to1L.
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This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.03 on Elemental Analysis.
Current edition approved Dec. 1, 2006. Published January 2007. Originally
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approved in 1973. Last previous edition approved in 2002 as D 3237–02. Reagent Chemicals, American Chemical Society Specifications, American
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Chemical Society, Washington, DC. For suggestions on the testing of reagents not
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM listed by the American Chemical Society, see Analar Standards for Laboratory
Standards volume information, refer to the standard’s Document Summary page on Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
the ASTM website. and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
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Withdrawn. MD.
*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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D3237–06
6.6 Iodine Solution—Dissolve and dilute 3.0 g of iodine 8.1.2 Addimmediately0.1m
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