ASTM D3227-16
(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 % by mass of mercaptan sulfur. Organic sulfur compounds such as sulfides, disulfides, and thiophene, do not interfere. Elemental sulfur in amounts less than 0.0005 % by 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.
1.2.1 Exception—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.
General Information
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Designation: D3227 − 16
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 U.S. Department of Defense.
1. Scope* D4057 Practice for Manual Sampling of Petroleum and
Petroleum Products
1.1 This test method covers the determination of mercaptan
D4177 Practice for Automatic Sampling of Petroleum and
sulfur in gasolines, kerosines, aviation turbine fuels, and
Petroleum Products
distillate fuels containing from 0.0003 % to 0.01 % by mass of
D6299 Practice for Applying Statistical Quality Assurance
mercaptan sulfur. Organic sulfur compounds such as sulfides,
and Control Charting Techniques to Evaluate Analytical
disulfides, and thiophene, do not interfere. Elemental sulfur in
Measurement System Performance
amounts less than 0.0005 % by mass does not interfere.
Hydrogen sulfide will interfere if not removed, as described in
3. Summary of Test Method
9.2.
3.1 The hydrogen sulfide-free sample is dissolved in an
1.2 The values in acceptable SI units are to be regarded as
alcoholic sodium acetate titration solvent and titrated potentio-
the standard.
metrically with silver nitrate solution, using as an indicator the
1.2.1 Exception—The values in parentheses are for informa-
potential between a glass reference electrode and a silver/
tion 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-
4. Significance and Use
bility of regulatory limitations prior to use. For specific
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:
5. Apparatus
D1193 Specification for Reagent Water
5.1 As described in 5.2 – 5.5; alternatively, any automatic
D1250 Guide for Use of the Petroleum Measurement Tables
titration system may be used that, using the same electrode pair
D1298 Test Method for Density, Relative Density, or API
described in 5.3, is capable of performing the titration as
Gravity of Crude Petroleum and Liquid Petroleum Prod-
described in Section 9 and selecting the endpoint specified in
ucts by Hydrometer Method
11.1 with a precision that meets or is better than that given in
D4052 Test Method for Density, Relative Density, and API
Section 14.
Gravity of Liquids by Digital Density Meter
5.2 Meter—An electronic voltmeter, operating on an input
− 12
of less than 9 × 10 A and having a sensitivity of 62 mV
1
This test method is under the jurisdiction of ASTM Committee D02 on
over a range of at least 61 V. The meter shall be electrostati-
Petroleum Products, Liquid Fuels, and Lubricantsand is the direct responsibility of
3
cally shielded, and the shield shall be connected to the ground.
Subcommittee D02.03 on Elemental Analysis.
Current edition approved Oct. 1, 2016. Published November 2016. Originally
5.3 Cell System, consisting of a reference and indicating
approved in 1973. Last previous edition approved in 2013 as D3227 – 13. DOI:
electrode. The reference electrode should be a sturdy, pencil-
10.1520/D3227-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
type glass electrode, having a shielded lead connected to
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 − 16
NOTE 1—It is important to pass the propan-2-ol through a column of
ground. The indicating electrode shall be made from a silver
activated alumina to remove peroxides that may have formed on storage;
wire, 2 mm (0.08 in.) in diameter or larger, mounted
...
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 − 13 D3227 − 16
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 U.S. Department of Defense.
1. 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 % of0.0003 % to 0.01 % by 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 % 0.0005 % by 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.
1.2.1 Exception—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 Products, Liquid Fuels, and Lubricantsand is the direct responsibility of
Subcommittee D02.03 on Elemental Analysis.
Current edition approved June 15, 2013Oct. 1, 2016. Published August 2013November 2016. Originally approved in 1973. Last previous edition approved in 20102013
as D3227 – 04D3227 – 13.A (2010). DOI: 10.1520/D3227-13.10.1520/D3227-16.
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 − 16
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 62 mV
3
over a range of at least 61 V. 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 e
...
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