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  • ASTM D 6730 : 2021

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    Standard Test Method for Determination of Individual Components in Spark Ignition Engine Fuels by 100-Metre Capillary (with Precolumn) High-Resolution Gas Chromatography

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  19-05-2021

    Publisher:  American Society for Testing and Materials

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    Scope - (Show below) - (Hide below)

    1.1This test method covers the determination of individual hydrocarbon components of spark-ignition engine fuels and their mixtures containing oxygenate blends (MTBE, ETBE, ethanol, and so forth) with boiling ranges up to 225 °C. Other light liquid hydrocarbon mixtures typically encountered in petroleum refining operations, such as blending stocks (naphthas, reformates, alkylates, and so forth) may also be analyzed; however, statistical data was obtained only with blended spark-ignition engine fuels.

    1.2Based on the cooperative study results, individual component concentrations and precision are determined in the range from 0.01 % to approximately 30 % by mass. The test method may be applicable to higher and lower concentrations for the individual components; however, the user must verify the accuracy if the test method is used for components with concentrations outside the specified ranges.

    1.3This test method also determines methanol, ethanol, t-butanol, methyl t-butyl ether (MTBE), ethyl t-butyl ether (ETBE), and t-amyl methyl ether (TAME) in spark ignition engine fuels in the concentration range from 1 % to 30 % by mass. However, the cooperative study data provided insufficient statistical data for obtaining a precision statement for these compounds.

    1.4Although a majority of the individual hydrocarbons present are determined, some co-elution of compounds is encountered. If this test method is utilized to estimate bulk hydrocarbon group-type composition (PONA), the user of such data should be cautioned that some error will be encountered due to co-elution and a lack of identification of all components present. Samples containing significant amounts of naphthenic (for example, virgin naphthas) constituents above n-octane may reflect significant errors in PONA-type groupings. Based on the gasoline samples in the interlaboratory cooperative study, this test method is applicable to samples containing less than 25 % by mass of olefins. However, some interfering co-elution with the olefins above C7 is possible, particularly if blending components or their higher boiling cuts such as those derived from fluid catalytic cracking (FCC) are analyzed, and the total olefin content may not be accurate. Annex A1 of this test method compares results of the test method with other test methods for selected components, including olefins, and several group types for several interlaboratory cooperative study samples. Although benzene, toulene, and several oxygenates are determined, when doubtful as to the analytical results of these components, confirmatory analyses can be obtained by using the specific test methods listed in the reference section.

    1.4.1Total olefins in the samples may be obtained or confirmed, or both, if necessary, by Test Method D1319 (percent by volume) or other test methods, such as those based on multidimentional PONA-type of instruments.

    1.5If water is or is suspected of being present, its concentration may be determined, if desired, by the use of Test Method D1744 or equivalent. Other compounds containing oxygen, sulfur, nitrogen, and so forth, may also be present, and may co-elute with the hydrocarbons. If determination of these specific compounds is required, it is recommended that test methods for these specific materials be used, such as Test Methods D4815 and D5599 for oxygenates, and Test Method D5623 for sulfur compounds, or equivalent.

    1.6The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.7This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.8This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    General Product Information - (Show below) - (Hide below)

    Committee D 02
    Document Type Test Method
    Publisher American Society for Testing and Materials
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    ASTM D 8368 : 2021 Standard Test Method for Determination of Totals of Saturate, Aromatic, Polyaromatic and Fatty Acid Methyl Esters (FAME) Content of Diesel Fuel Using Gas Chromatography with Vacuum Ultraviolet Absorption Spectroscopy Detection (GC-VUV)
    ASTM D 8071 : 2020 Standard Test Method for Determination of Hydrocarbon Group Types and Select Hydrocarbon and Oxygenate Compounds in Automotive Spark-Ignition Engine Fuel Using Gas Chromatography with Vacuum Ultraviolet Absorption Spectroscopy Detection (GC-VUV)
    ASTM D 8369 : 2021 Standard Test Method for Detailed Hydrocarbon Analysis by High Resolution Gas Chromatography with Vacuum Ultraviolet Absorption Spectroscopy (GC-VUV)
    ASTM D 8011 : 2019 Standard Specification for Natural Gasoline as a Blendstock in Ethanol Fuel Blends or as a Denaturant for Fuel Ethanol
    ASTM D 8267 : 2019 : REV A Standard Test Method for Determination of Total Aromatic, Monoaromatic and Diaromatic Content of Aviation Turbine Fuels Using Gas Chromatography with Vacuum Ultraviolet Absorption Spectroscopy Detection (GC-VUV)
    ASTM D 7900 : 2018 : EDT 1 Standard Test Method for Determination of Light Hydrocarbons in Stabilized Crude Oils by Gas Chromatography
    ASTM D 5134 : 2013 : R2017 Standard Test Method for Detailed Analysis of Petroleum Naphthas through n-Nonane by Capillary Gas Chromatography
    ASTM D 2892 : 2020 Standard Test Method for Distillation of Crude Petroleum (15-Theoretical Plate Column)

    Standards Referencing This Book - (Show below) - (Hide below)

    ASTM D 4057 : 2019 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
    ASTM D 5599 : 2022 Standard Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection
    ASTM D 4815 : 2015 : REV B : R2019 Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography
    ASTM D 4815 : 2022 Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography
    ASTM D 5599 : 2018 Standard Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection
    ASTM D 3700 : 2021 Standard Practice for Obtaining LPG Samples Using a Floating Piston Cylinder
    ASTM D 4177 : 2022 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
    ASTM D 4307 : 2017 Standard Practice for Preparation of Liquid Blends for Use as Analytical Standards
    ASTM D 4307 : 2017 : R2021 Standard Practice for Preparation of Liquid Blends for Use as Analytical Standards
    ASTM D 4057 : 2022 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
    ASTM D 4177 : 2020 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
    ASTM D 3700 : 2016 Standard Practice for Obtaining LPG Samples Using a Floating Piston Cylinder
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