Standard Test Method for Manganese In Gasoline By Atomic Absorption Spectroscopy

SCOPE
1.1 This test method covers the determination of the total manganese content, present as methylcyclopentadienyl manganese tricarbonyl (MMT), of gasoline within the concentration range from 0.25 to 40 mg/L of manganese.
1.2 This test method is applicable to reformulated gasoline containing up to 12 % volume methyl tertiary butylether or up to 10 % volume ethanol. This test method may not be applicable to highly cracked materials containing greater than 18 volume % olefins as determined by Test Method D1319 (nondepentanized).
1.3 This test method has been developed and tested specifically for the determination of MMT in gasoline over the recommended concentration range. Application of the method to other concentration ranges, to the determination of MMT in other materials, or to the determination of other manganese compounds in gasoline have not been tested
1.4 The values stated in SI units are to be regarded as the standard. The preferred concentration units are mg/L manganese.
1.5 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 precautionary statements, see Sections 5,6 and 7.

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Publication Date
09-May-2001
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ASTM D3831-01 - Standard Test Method for Manganese In Gasoline By Atomic Absorption Spectroscopy
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D3831–01
Standard Test Method for
Manganese in Gasoline By Atomic Absorption
1
Spectroscopy
This standard is issued under the fixed designation D 3831; 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.
1. Scope* D 6299 Practice for Applying Statistical Quality Assurance
Techniques to Evaluate Analytical Measurement System
1.1 This test method covers the determination of the total
5
Performance
manganese content, present as methylcyclopentadienyl manga-
2 D 6300 Practice for Determination of Precision and Bias
nese tricarbonyl (MMT) , of gasoline within the concentration
Data for Use in Test Methods for Petroleum Products and
range from 0.25 to 40 mg/L of manganese.
5
Lubricants
1.2 This test method is applicable to reformulated gasoline
containing up to 12 % volume methyl tertiary butylether or up
3. Summary of Test Method
to 10 % volume ethanol. This test method may not be appli-
3.1 The gasoline sample is treated with bromine solution
cable to highly cracked materials containing greater than 18
and diluted with methyl isobutyl ketone. The manganese
volume % olefins as determined by Test Method D 1319
content of the sample is determined by atomic absorption
(nondepentanized).
spectrometry using an air-acetylene flame at 279.5 nm and
1.3 This test method has been developed and tested specifi-
standards prepared from an organo-manganese standard mate-
cally for the determination of MMT in gasoline over the
rial.
recommended concentration range. Application of the method
to other concentration ranges, to the determination of MMT in
4. Significance and Use
other materials, or to the determination of other manganese
4.1 Certain organo-manganese compounds act as antiknock
compounds in gasoline have not been tested
agents when added to gasoline. This test method provides a
1.4 The values stated in SI units are to be regarded as the
means for determining the concentration of such a material in
standard. The preferred concentration units are mg/L manga-
a gasoline sample.
nese.
1.5 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 Atomic Absorption Spectrometer, capable of scale ex-
responsibility of the user of this standard to establish appro-
pansion and equipped with a manganese hollow-cathode lamp
priate safety and health practices and determine the applica-
for monitoring manganese absorption at 279.5 nm, a premix
bility of regulatory limitations prior to use. For specific
slot-type burner with rotatable burner head, and an adjustable
precautionary statements, see Sections 5, 6 and 7.
nebulizer. (Warning—Hazardous. Potentially toxic and explo-
sive. Refer to the manufacturer’s instrument manual for asso-
2. Referenced Documents
ciated safety hazards.)
2.1 ASTM Standards:
5.2 Vials, up to 40-mL size with polyethylene or TFE-
D 1319 Test Method for Hydrocarbon Types in Liquid
3 fluorocarbon-lined caps or glass stoppers.
Petroleum Products by Fluorescent Indicator Adsorption
5.3 Pipet, Delivery, 1-mL size.
D 4057 Practice for Manual Sampling of Petroleum and
4 5.4 Micropipet, 100-µL size, Eppendorf type or equivalent.
Petroleum Products
5.5 Automatic Pipet,orequivalentdeliverypipet,capableof
D 4177 Practice forAutomatic Sampling of Petroleum and
4 delivering 9.0-mL quantities.
Ptroleum Products
6. Reagents
1 6.1 Purity of Reagents—Reagent grade chemicals shall be
This test method is under the jurisdiction of ASTM Committee D02 on
used in all tests. Unless otherwise indicated, it is intended that
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.03 on Elemental Analysis.
all reagents shall conform to the specifications of the Commit-
Current edition approved May 10, 2001. Published June 2001. Originally
tee onAnalytical Reagents of theAmerican Chemical Society,
published as D 3831 – 79. Last previous edition D 3831 – 98.
2
MMT is a registered trademark of Ethyl Corp.
3
Annual Book of ASTM Standards, Vol 05.01.
4 5
Annual Book of ASTM Standards, Vol 05.02. Annual Book of ASTM Standards, Vol 05.03.
*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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D3831–01
6
where such specifications are available. Other grades may be assumes that good operating procedures are followed. Design
used, provided it is first ascertained that the reagent is of differences between spectrometers
...

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