Standard Test Method for
Manganese in Gasoline By Atomic Absorption
Spectroscopy1

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*

1.1 This test method covers the determination of the total
manganese content, present as methylcyclopentadienyl manganese tricarbonyl (MMT)2
, 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 D 1319
(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.

2. Referenced Documents

2.1 ASTM Standards:
D 1319 Test Method for Hydrocarbon Types in Liquid
Petroleum Products by Fluorescent Indicator Adsorption3
D 4057 Practice for Manual Sampling of Petroleum and
Petroleum Products4
D 4177 Practice for Automatic Sampling of Petroleum and
Ptroleum Products4

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