ASTM D4128 - 18

    Standard Guide for Identification and Quantitation of Organic Compounds in Water by Combined Gas Chromatography and Electron Impact Mass Spectrometry

    Active Standard ASTM D4128 | Developed by Subcommittee: D19.06

    Book of Standards Volume: 11.02


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    Significance and Use

    5.1 With the common occurrence in water of organic compounds, some of which are toxic, it is often necessary to identify the specific compounds present and to determine the concentration.

    1. Scope

    1.1 This guide covers the identification and quantitation of organic compounds by gas chromatography/mass spectrometry (GC-MS) (electron impact) that are present or extracted from water and are capable of passing through a gas chromatograph without alteration. This guide can be used to provide tentative identifications of volatile and semi-volatile organics, but is restricted to (a) compounds for which reference spectra can be obtained and (b) compounds that can be separated by gas chromatography (GC). These restrictions are imposed on the guide, but are not a limitation of the technique. The guide is written for analysis using automated data acquisition and handling.

    1.2 Guidelines have been included for quantitation using ASTM Test Methods D3871, D3973, and other GC-MS volatile/semivolatile procedures used for environmental analysis2. The actual detection limits for each component must be determined in each laboratory. Actual detection amounts will vary with the complexity of the matrix, the kind and condition of the GC-MS system, the sample preparation technique chosen, and the application of cleanup techniques to the sample extract, if any. Lower levels of detection can be achieved using modern sensitive instruments or with selected ion monitoring (SIM). To determine the interlaboratory detection estimate (IDE) and the interlaboratory quantitation estimate (IQE), follow Practices D6091 and D6512.

    1.3 The guide is applicable to the identification of many organic constituents of natural and treated waters. It includes all modes of sample introduction, including injection of organic extracts, direct aqueous injection, and purge and trap techniques.

    1.4 The guide is applicable to capillary column gas chromatography.

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

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

    1.7 This 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1066 Practice for Sampling Steam

    D1129 Terminology Relating to Water

    D1192 Guide for Equipment for Sampling Water and Steam in Closed Conduits

    D1193 Specification for Reagent Water

    D2908 Practice for Measuring Volatile Organic Matter in Water by Aqueous-Injection Gas Chromatography

    D3370 Practices for Sampling Water from Flowing Process Streams

    D3694 Practices for Preparation of Sample Containers and for Preservation of Organic Constituents

    D3871 Test Method for Purgeable Organic Compounds in Water Using Headspace Sampling

    D3973 Test Method for Low-Molecular Weight Halogenated Hydrocarbons in Water

    D5175 Test Method for Organohalide Pesticides and Polychlorinated Biphenyls in Water by Microextraction and Gas Chromatography

    D5316 Test Method for 1,2-Dibromoethane and 1,2-Dibromo-3-Chloropropane in Water by Microextraction and Gas Chromatography

    D5317 Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector

    D5789 Practice for Writing Quality Control Specifications for Standard Test Methods for Organic Constituents

    D6091 Practice for 99 %/95 % Interlaboratory Detection Estimate (IDE) for Analytical Methods with Negligible Calibration Error

    D6512 Practice for Interlaboratory Quantitation Estimate

    E260 Practice for Packed Column Gas Chromatography

    E355 Practice for Gas Chromatography Terms and Relationships


    ICS Code

    ICS Number Code 13.060.30 (Sewage water)

    UNSPSC Code

    UNSPSC Code 70171601(Water quality management)


    Referencing This Standard
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    DOI: 10.1520/D4128-18

    Citation Format

    ASTM D4128-18, Standard Guide for Identification and Quantitation of Organic Compounds in Water by Combined Gas Chromatography and Electron Impact Mass Spectrometry, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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