ASTM D7319 - 11e1 standard test method for determination of existent and potential sulfate and inorganic chloride in fuel ethanol by direct injection suppressed ion chromatography

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Source: ASTM International

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.

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.

1. Scope

1.1 This test method covers a direct injection ion chromatographic procedure for determining existent 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 existent 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 (purchase separately)

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

European Norm Standards
EN15492 Ethanol as a blending component for petrol - Determination of inorganic chloride and sulfate content - Ion chromatographic method

Index Terms

anions; chloride; direct injection; ethanol; existent inorganic sulfate; inorganic chloride; potential sulfate; sulfate; suppressed ion chromatography; total chloride: Fuel ethanol (Ed75-Ed85); Ion chromatography (IC); Chloride analysis--petroleum products; Sulfate content; Total chloride;

ICS Code

ICS Number Code 71.040.50 (Physicochemical methods of analysis); 75.160.20 (Liquid fuels)

DOI: 10.1520/D7319-11E01

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