ASTM D7319-09
(Test Method)Standard Test Method for Determination of Total and Potential Sulfate and Inorganic Chloride in Fuel Ethanol by Direct Injection Suppressed Ion Chromatography
Standard Test Method for Determination of Total and Potential Sulfate and Inorganic Chloride in Fuel Ethanol by Direct Injection Suppressed Ion Chromatography
SIGNIFICANCE AND USE
Sulfates and chlorides can be found in filter plugging deposits and fuel injector deposits. The acceptability for use of the fuel components and the finished fuels depends on the sulfate and chloride content.
Total and potential sulfate and total chloride content, as measured by this test method, can be used as one measure of the acceptability of gasoline components for automotive spark-ignition engine fuel use.
SCOPE
1.1 This test method covers a direct injection ion chromatographic procedure for determining the total and potential inorganic sulfate and total inorganic chloride content in hydrous and anhydrous denatured ethanol to be used in motor fuel applications. It is intended for the analysis of ethanol samples containing between 1.0–20 mg/kg of total or potential inorganic sulfate and 1.0–50 mg/kg of inorganic chloride.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.
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Designation:D7319–09
Standard Test Method for
Determination of Total and Potential Sulfate and Inorganic
Chloride in Fuel Ethanol by Direct Injection Suppressed Ion
1
Chromatography
This standard is issued under the fixed designation D7319; 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.
1. Scope* Measurement System Performance
D6792 Practice for Quality System in Petroleum Products
1.1 This test method covers a direct injection ion chromato-
and Lubricants Testing Laboratories
graphic procedure for determining the total and potential
D7318 Test Method for Total Inorganic Sulfate in Ethanol
inorganic sulfate and total inorganic chloride content in hy-
by Potentiometric Titration
drousandanhydrousdenaturedethanoltobeusedinmotorfuel
D7328 Test Method for Determination of Total and Poten-
applications. It is intended for the analysis of ethanol samples
tial Inorganic Sulfate and Total Inorganic Chloride in Fuel
containing between 1.0–20 mg/kg of total or potential inor-
Ethanol by Ion Chromatography Using Aqueous Sample
ganic sulfate and 1.0–50 mg/kg of inorganic chloride.
Injection
1.2 The values stated in SI units are to be regarded as
3
2.2 European Norm Standards:
standard. No other units of measurement are included in this
EN 15492 Ethanol as a blending component for petrol -
standard.
Determination of inorganic chloride and sulfate content -
1.3 This standard does not purport to address all of the
Ion chromatographic method
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety and health practices and determine the applica-
3.1 Definitions of Terms Specific to This Standard:
bility of regulatory limitations prior to use. Material Safety
3.1.1 inorganic chloride, n—chloride present as hydrochlo-
Data Sheets are available for reagents and materials. Review
ric acid, ionic salts of this acid, or mixtures of these.
them for hazards prior to usage.
-2
3.1.2 inorganic sulfate, n—sulfate (SO ) species present
4
2. Referenced Documents as sulfuric acid, ionic salts of this acid, or mixtures of these.
2
3.1.3 potential sulfate, n—inorganic sulfate species present
2.1 ASTM Standards:
after the sample has been reacted with an oxidizing agent.
D1193 Specification for Reagent Water
3.1.4 total sulfate, n—inorganic sulfate species actually
D4052 Test Method for Density, Relative Density, and API
present in the sample at the time of analysis with no oxidation
Gravity of Liquids by Digital Density Meter
treatment.
D4057 Practice for Manual Sampling of Petroleum and
Petroleum Products
4. Summary of Test Method
D4177 Practice for Automatic Sampling of Petroleum and
4.1 For total sulfate and chloride, a small volume of an
Petroleum Products
ethanol sample is directly injected into a suitably configured
D5827 Test Method for Analysis of Engine Coolant for
ion chromatograph in accordance with manufacturer’s recom-
Chloride and Other Anions by Ion Chromatography
mendations for this test method. For potential sulfate, 0.5 mL
D6299 Practice for Applying Statistical Quality Assurance
of 30 % hydrogen peroxide solution is added to 9.5 mL of the
and Control Charting Techniques to Evaluate Analytical
ethanol sample, and then injected into the ion chromatograph.
Ions are separated based on their affinity for exchange sites of
the resin with respect to the resin’s affinity for the eluent. The
1
This test method is under the jurisdiction of ASTM Committee D02 on
suppressor increases the sensitivity of the test method by both
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.03 on Elemental Analysis.
increasing the conductivity of the analytes and decreasing the
Current edition approved Nov. 1, 2009. Published December 2009. Originally
conductivity of the eluent. It also converts the eluent and
approved in 2007. Last previous edition approved in 2007 as D7319–07. DOI:
analytes to the corresponding hydrogen forms of anions.
10.1520/D7319-09.
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
3
Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
*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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This document is not anASTM standard and is intended only to provide the user of anASTM 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:D7319–07 Designation:D7319–09
Standard Test Method for
Determination of Total and Potential Sulfate and Inorganic
Chloride in Fuel Ethanol by Direct Injection Suppressed Ion
1
Chromatography
This standard is issued under the fixed designation D7319; 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.
1. Scope*
1.1 This test method covers a direct injection ion chromatographic procedure for determining the total and potential inorganic
sulfate and total inorganic chloride content in hydrous and anhydrous denatured ethanol to be used in motor fuel applications. It
is intended for the analysis of ethanol samples containing between 1.0–20 mg/kg of total or potential inorganic sulfate and 1.0–50
mg/kg of inorganic chloride.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to
usage.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
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
D5827 Test Method for Analysis of Engine Coolant for Chloride and Other Anions by Ion Chromatography
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical
Measurement System Performance
D6792 Practice for Quality System in Petroleum Products and Lubricants Testing Laboratories
D7318 Test Method for Total Inorganic Sulfate in Ethanol by Potentiometric Titration
D7328 Test Method for Determination of Total and Potential Inorganic Sulfate and Total Inorganic Chloride in Fuel Ethanol
by Ion Chromatography Using Aqueous Sample Injection
3
2.2 European Norm Standards:
EN 15492 Ethanol as a blending component for petrol - Determination of inorganic chloride and sulfate content - Ion
chromatographic method
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 inorganic chloride, n—chloride present as hydrochloric acid, ionic salts of this acid, or mixtures of these.
-2
3.1.2 inorganic sulfate, n—sulfate (SO ) species present as sulfuric acid, ionic salts of this acid, or mixtures of these.
4
3.1.3 potential sulfate, n—total sulfur species present in the sample that will oxidize to sulfates in the presence of an oxidizing
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.03 on
Elemental Analysis.
Current edition approved Feb. 1, 2007. Published March 2007. DOI: 10.1520/D7319-07.
Current edition approved Nov. 1, 2009. Published December 2009. Originally approved in 2007. Last previous edition approved in 2007 as D7319–07. DOI:
10.1520/D7319-09.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
3
Reagent Chemicals, American Chemical Society Specifications. American Chemical Society, Washington, D.C. For suggestions on testing of reagents not listed by the
American Chemical Society, see Annual Standards for Laboratory Chemicals, BDH Ltd., Dorset, U.K., and the United States Pharmacopeia and National Formulatory, U.S.
Pharmacopeial Convention, Inc. (USPC), Rockville, MD.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*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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D7319–09
agent. —inorganic sulfate species present after the sample has been
...
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