ASTM D3227-02
(Test Method)Standard Test Method for (Thiol Mercaptan) Sulfur in Gasoline, Kerosine, Aviation Turbine, and Distillate Fuels (Potentiometric Method)
Standard Test Method for (Thiol Mercaptan) Sulfur in Gasoline, Kerosine, Aviation Turbine, and Distillate Fuels (Potentiometric Method)
SCOPE
1.1 This test method covers the determination of mercaptan sulfur in gasolines, kerosines, aviation turbine fuels, and distillate fuels containing from 0.0003 to 0.01 mass% of mercaptan sulfur. Organic sulfur compounds such as sulfides, disulfides, and thiophene do not interfere. Elemental sulfur in amounts less than 0.0005 mass % does not interfere. Hydrogen sulfide will interfere, if not removed as described in 9.2.
1.2 The values in acceptable SI units are to be regarded as the standard. The values in parentheses are for information only.
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 Sections 6, 8, and 9.
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: D 3227 – 02
Designation: 342/2000
Standard Test Method for
(Thiol Mercaptan) Sulfur in Gasoline, Kerosine, Aviation
1
Turbine, and Distillate Fuels (Potentiometric Method)
This standard is issued under the fixed designation D 3227; 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.
This test method has been approved by the sponsoring committee and accepted by the cooperation societies in accordance with
established procedures.
1. Scope * D 4177 Practice for Automatic Sampling of Petroleum and
4
Petroleum Products
1.1 This test method covers the determination of mercaptan
D 6299 Practice for Applying Statistical Quality Assurance
sulfur in gasolines, kerosines, aviation turbine fuels, and
Techniques to Evaluate Analytical Measurement System
distillate fuels containing from 0.0003 to 0.01 mass % of
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Performance
mercaptan sulfur. Organic sulfur compounds such as sulfides,
disulfides, and thiophene, do not interfere. Elemental sulfur in
3. Summary of Test Method
amounts less than 0.0005 mass % does not interfere. Hydrogen
3.1 The hydrogen sulfide-free sample is dissolved in an
sulfide will interfere if not removed, as described in 9.2.
alcoholic sodium acetate titration solvent and titrated potentio-
1.2 The values in acceptable SI units are to be regarded as
metrically with silver nitrate solution (see Note 1), using as an
the standard. The values in parentheses are for information
indicator the potential between a glass reference electrode and
only.
a silver/silver-sulfide indicating electrode. Under these condi-
1.3 This standard does not purport to address all of the
tions, the mercaptan sulfur is precipitated as silver mercaptide
safety concerns, if any, associated with its use. It is the
and the end point of the titration is shown by a large change in
responsibility of the user of this standard to establish appro-
cell potential.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific hazard
4. Significance and Use
statements, see Sections 6, 8, and 9.
4.1 Mercaptan sulfur has an objectionable odor, an adverse
effect on fuel system elastomers, and is corrosive to fuel
2. Referenced Documents
system components.
2.1 ASTM Standards:
2
D 1193 Specification for Reagent Water
5. Apparatus
3
D 1250 Guide for Petroleum Measurement Tables
5.1 As described in 5.2-5.5; alternatively, any automatic
D 1298 Test Method for Density, Relative Density (Specific
titration system may be used that, using the same electrode pair
Gravity), or API Gravity of Crude Petroleum and Liquid
described in 5.3, is capable of performing the titration as
3
Petroleum Products by Hydrometer Method
described in Section 9 and selecting the endpoint specified in
D 4052 Test Method for Density and Relative Density of
11.1 with a precision that meets or is better than that given in
4
Liquids by Digital Density Meter
Section 13.
D 4057 Practice for Manual Sampling of Petroleum and
5.2 Meter—An electronic voltmeter, operating on an input
4
Petroleum Products
−12
of less than 9 3 10 A and having a sensitivity of 62mV
over a range of at least 61 V. The meter shall be electrostati-
6
cally shielded, and the shield shall be connected to the ground.
1
This test method is under the jurisdiction of ASTM Committee D02 on 5.3 Cell System, consisting of a reference and indicating
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
electrode. The reference electrode should be a sturdy, pencil-
D02.03 on Elemental Analysis.
type glass electrode, having a shielded lead connected to
Current edition approved April 10, 2002. Published May 2002. Originally
published as D 3227 – 73. Last previous edition D 3227 – 00.
2
Annual Book of ASTM Standards, Vol 11.01.
3 5
Annual Book of ASTM Standards, Vol 05.01. Annual Book of ASTM Standards, Vol 05.03.
4 6
Annual Book of ASTM Standards, Vol 05.02. Any apparatus that will give equal or better precision will be acceptable.
*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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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D3227–02
activated alumina to remove peroxides that may have formed on stora
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