ASTM D3227-13
(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)
SIGNIFICANCE AND USE
4.1 Mercaptan sulfur has an objectionable odor, an adverse effect on fuel system elastomers, and is corrosive to fuel system components.
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 warning statements, see Sections 6, 8, 9, and Appendix X1.
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Designation: D3227 − 13
Designation:342/00
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 D3227; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* D4177Practice for Automatic Sampling of Petroleum and
Petroleum Products
1.1 This test method covers the determination of mercaptan
D6299Practice for Applying Statistical Quality Assurance
sulfur in gasolines, kerosines, aviation turbine fuels, and
and Control Charting Techniques to Evaluate Analytical
distillate fuels containing from 0.0003 to 0.01 mass% of
Measurement System Performance
mercaptan sulfur. Organic sulfur compounds such as sulfides,
disulfides, and thiophene, do not interfere. Elemental sulfur in
3. Summary of Test Method
amountslessthan0.0005mass%doesnotinterfere.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, using as an indicator the
the standard. The values in parentheses are for information
potential between a glass reference electrode and a silver/
only.
silver-sulfide indicating electrode. Under these conditions, the
1.3 This standard does not purport to address all of the
mercaptan sulfur is precipitated as silver mercaptide and the
safety concerns, if any, associated with its use. It is the
end point of the titration is shown by a large change in cell
responsibility of the user of this standard to establish appro-
potential.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific 4. Significance and Use
warning statements, see Sections 6, 8, 9, and Appendix X1.
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
2.1 ASTM Standards:
D1193Specification for Reagent Water 5. Apparatus
D1250Guide for Use of the Petroleum MeasurementTables
5.1 As described in 5.2 – 5.5; alternatively, any automatic
D1298Test Method for Density, Relative Density, or API
titrationsystemmaybeusedthat,usingthesameelectrodepair
Gravity of Crude Petroleum and Liquid Petroleum Prod-
described in 5.3, is capable of performing the titration as
ucts by Hydrometer Method
described in Section 9 and selecting the endpoint specified in
D4052Test Method for Density, Relative Density, and API
11.1 with a precision that meets or is better than that given in
Gravity of Liquids by Digital Density Meter
Section 14.
D4057Practice for Manual Sampling of Petroleum and
5.2 Meter—An electronic voltmeter, operating on an input
Petroleum Products
−12
of less than 9×10 A and having a sensitivity of 62mV
over a range of at least 61 V. The meter shall be electrostati-
3
1
This test method is under the jurisdiction of ASTM Committee D02 on callyshielded,andtheshieldshallbeconnectedtotheground.
Petroleum Products and Lubricantsand is the direct responsibility of Subcommittee
5.3 Cell System, consisting of a reference and indicating
D02.03 on Elemental Analysis.
Current edition approved June 15, 2013. Published August 2013. Originally electrode. The reference electrode should be a sturdy, pencil-
approved in 1973. Last previous edition approved in 2010 as D3227–04A(2010).
type glass electrode, having a shielded lead connected to
DOI: 10.1520/D3227-13.
ground. The indicating electrode shall be made from a silver
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
3
the ASTM website. Any apparatus that will give equal or better precision is 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
1
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D3227 − 13
NOTE 1—It is important to pass the propan-2-ol through a column of
wire, 2 mm (0.08 in.) in diameter or larger, mounted in an
activated alumina to remove peroxides that may have formed on storage;
insulated support. Silver billet electrodes can also be used.
failure to remove peroxid
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3227 − 04a (Reapproved 2010) D3227 − 13
Designation: 342/00
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 D3227; 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 (´) 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 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 warning statements, see Sections 6, 8, 9, and Appendix X1.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D1250 Guide for Use of the Petroleum Measurement Tables
D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by
Hydrometer Method
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
3. Summary of Test Method
3.1 The hydrogen sulfide-free sample is dissolved in an alcoholic sodium acetate titration solvent and titrated potentiometrically
with silver nitrate solution, using as an indicator the potential between a glass reference electrode and a silver/silver-sulfide
indicating electrode. Under these conditions, the mercaptan sulfur is precipitated as silver mercaptide and the end point of the
titration is shown by a large change in cell potential.
4. Significance and Use
4.1 Mercaptan sulfur has an objectionable odor, an adverse effect on fuel system elastomers, and is corrosive to fuel system
components.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricantsand is the direct responsibility of Subcommittee D02.03 on
Elemental Analysis.
Current edition approved May 1, 2010June 15, 2013. Published May 2010August 2013. Originally approved in 1973. Last previous edition approved in 20042010 as
D3227D3227 – 04–04A. A (2010). DOI: 10.1520/D3227-04R10.10.1520/D3227-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
1
---------------------- Page: 1 ----------------------
D3227 − 13
5. Apparatus
5.1 As described in 5.2-5.5; alternatively, any automatic titration system may be used that, using the same electrode pair
described in 5.3, is capable of performing the titration as described in Section 9 and selecting the endpoint specified in 11.1 with
a precision that meets or is better than that given in Section 14.
− 12
5.2 Meter—An electronic voltmeter, operating on an input of less than 9 × 10 A and having a sensitivity of 62 mV over a
3
range of at least 61 V. The meter shall be electrostatically shielded, and the shield shall be connected to the ground.
5.3 Cell System, consisting of a reference and indicating electrode. The reference electrode should be a sturdy, pencil-type glass
electrode, having a shielded lead connected to ground. The indi
...
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