ASTM D7328-11
(Test Method)Standard Test Method for Determination of Existent and Potential Inorganic Sulfate and Total Inorganic Chloride in Fuel Ethanol by Ion Chromatography Using Aqueous Sample Injection
Standard Test Method for Determination of Existent and Potential Inorganic Sulfate and Total Inorganic Chloride in Fuel Ethanol by Ion Chromatography Using Aqueous Sample Injection
SIGNIFICANCE AND USE
Sulfates and chlorides may 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.
Existent and potential inorganic 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 an ion chromatographic procedure for the determination of the existent inorganic and potential 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 0.55 and 20 mg/kg of existent inorganic sulfate, 4.0 to 20 mg/kg of potential inorganic sulfate, and 0.75 to 50 mg/kg of total 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: D7328 − 11
StandardTest Method for
Determination of Existent and Potential Inorganic Sulfate
and Total Inorganic Chloride in Fuel Ethanol by Ion
1
Chromatography Using Aqueous Sample Injection
This standard is issued under the fixed designation D7328; 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* D6299 Practice for Applying Statistical Quality Assurance
and Control Charting Techniques to Evaluate Analytical
1.1 This test method covers an ion chromatographic proce-
Measurement System Performance
dure for the determination of the existent inorganic and
D6792 Practice for Quality System in Petroleum Products
potentialsulfateandtotalinorganicchloridecontentinhydrous
and Lubricants Testing Laboratories
and anhydrous denatured ethanol to be used in motor fuel
D7318 TestMethodforExistentInorganicSulfateinEthanol
applications. It is intended for the analysis of ethanol samples
by Potentiometric Titration
containing between 0.55 and 20 mg/kg of existent inorganic
D7319 Test Method for Determination of Existent and Po-
sulfate, 4.0 to 20 mg/kg of potential inorganic sulfate, and 0.75
tential Sulfate and Inorganic Chloride in Fuel Ethanol by
to 50 mg/kg of total inorganic chloride.
Direct Injection Suppressed Ion Chromatography
1.2 The values stated in SI units are to be regarded as
2.2 Other Standard:
standard. No other units of measurement are included in this
ISO/CEN15492 Ethanol as a Blending Component for
standard.
Petrol – Determination of Inorganic Chloride – Ion
3
1.3 This standard does not purport to address all of the
Chromatographic Method
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
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 existent inorganic sulfate, n—inorganic sulfate species
Data Sheets are available for reagents and materials. Review
actually present in the sample at the time of analysis with no
them for hazards prior to usage.
oxidation treatment.
3.1.2 inorganic chloride, n—chloride present as hydrochlo-
2. Referenced Documents
ric acid, ionic salts of this acid, or mixtures of these.
2
2.1 ASTM Standards:
3.1.3 inorganic sulfate, n—sulfate species present as sulfu-
D1193 Specification for Reagent Water
ric acid, ionic salts of this acid, or mixtures of these.
D4052 Test Method for Density, Relative Density, and API
Gravity of Liquids by Digital Density Meter 3.1.4 potential sulfate, n—total sulfur species present in the
samplethatcanbeoxidizedtoinorganicsulfateinthepresence
D4057 Practice for Manual Sampling of Petroleum and
Petroleum Products of an oxidizing agent.
D4177 Practice for Automatic Sampling of Petroleum and
4. Summary of Test Method
Petroleum Products
D5827 Test Method for Analysis of Engine Coolant for
4.1 For existent inorganic sulfate and chloride, a small
Chloride and Other Anions by Ion Chromatography
volume of a sample is evaporated to dryness and reconstituted
to the initial sample volume with deionized water, and injected
into an ion chromatograph consisting of appropriate ion
1
This test method is under the jurisdiction of ASTM Committee D02 on
exchange columns, suppressor and a conductivity detector. For
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.03 on Elemental Analysis.
potential sulfate, a small volume of a sample is evaporated to
Current edition approved July 1, 2011. Published August 2011. Originally
dryness and reconstituted to the initial sample volume with
ϵ1
approved in 2007. Last previous edition approved in 2007 as D7328–07 . DOI:
0.90 % hydrogen peroxide solution in water, and injected into
10.1520/D7328-11.
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 from International Organization for Standardization (ISO), 1 rue de
the ASTM website. Varembé, Case postale 56, CH-1211, Geneva 20, Switzerland, http://www.iso.ch.
*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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D7328 − 11
FIG. 1 Typical Ion Chromatogram of a Solution Containing 1 mg/kg of Various Anions in Water
anionchromatograp
...
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.
´1
Designation:D7328–07 Designation:D7328–11
Standard Test Method for
Determination of TotalExistent and Potential Inorganic
Sulfate and Total Inorganic Chloride in Fuel Ethanol by Ion
1
Chromatography Using Aqueous Sample Injection
This standard is issued under the fixed designation D7328; 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
´ NOTE—Added standards previously under development to the Referenced Documents and 4.2 editorially in April 2007.
1. Scope*
1.1 This test method covers an ion chromatographic procedure for the determination of the total existent inorganic 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 0.55 and 20 mg/kg of totalexistent inorganic
sulfate, 4.0 to 20 mg/kg of potential inorganic sulfate, and 0.75 to 50 mg/kg of total 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 Existent Inorganic Sulfate in Ethanol by Potentiometric Titration
D7319 Test Method for Determination of TotalExistent and Potential Sulfate and Inorganic Chloride in Fuel Ethanol by Direct
Injection Suppressed Ion Chromatography
2.2 Other Standard:
ISO/CEN15492 Ethanol as a Blending Component for Petrol – Determination of Inorganic Chloride – Ion Chromatographic
3
Method
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 existent inorganic sulfate, n—inorganic sulfate species actually present in the sample at the time of analysis with no
oxidation treatment.
3.1.2 inorganic chloride, n—chloride present as hydrochloric acid, ionic salts of this acid, or mixtures of these.
3.1.2
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.03 on
Elemental Analysis.
Current edition approved Jan. 1, 2007. Published February 2007. DOI: 10.1520/D7328-07E01.
´1
Current edition approved July 1, 2011. Published August 2011. Originally approved in 2007. Last previous edition approved in 2007 as D7328–07 . DOI:
10.1520/D7328-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from International Organization for Standardization (ISO), 1 rue de Varembé, Case postale 56, CH-1211, Geneva 20, Switzerland, http://www.iso.ch.
*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 ----------------------
D7328–11
3.1.3 inorganic sulfate, n—sulfate species present as sulfuric acid, ionic salts of this acid, or mixtures of these.
3.1.3
3.1.4 potential sulfate, n—total sulfur species present in the sample that can be oxidized to inorganic sulfate in the presence of
an oxidizing agent.
3.1.4total sulfate, n—inorganic sulfate species actually presen
...
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