ASTM D3162 - 12

    Standard Test Method for Carbon Monoxide in the Atmosphere (Continuous Measurement by Nondispersive Infrared Spectrometry)

    Active Standard ASTM D3162 | Developed by Subcommittee: D22.03

    Book of Standards Volume: 11.07


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    ASTM D3162

    Significance and Use

    Determination of carbon monoxide is essential to evaluation of many air pollution complexes. This test method derives significance from providing such determination.

    Carbon monoxide is formed in the process of incomplete combustion of hydrocarbon fuels, and is a constituent of the exhaust of gasoline engines. The Environmental Protection Agency (EPA) has set primary and secondary air quality standards for CO that are designed to protect the public health and welfare (3, 4).

    This test method is suitable for measurements appropriate for the purposes noted in 5.1 and 5.2.

    1. Scope

    1.1 This test method is applicable to the determination of the carbon monoxide (CO) concentration of the atmosphere between 0.6 mg/m3 (0.5 ppm(v)) and 115 mg/m3 (100 ppm(v)). The measuring principle is based on the absorption of infrared radiation by CO in the 4.7 μm region (1).

    1.2 The test method has a limit of detection of about 0.6 mg/m3 (0.5 ppm(v)) carbon monoxide in air.

    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. See Section 9 for additional precautions.


    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

    D1356 Terminology Relating to Sampling and Analysis of Atmospheres

    D1357 Practice for Planning the Sampling of the Ambient Atmosphere

    D1914 Practice for Conversion Units and Factors Relating to Sampling and Analysis of Atmospheres

    D3249 Practice for General Ambient Air Analyzer Procedures

    D3631 Test Methods for Measuring Surface Atmospheric Pressure

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals


    ICS Code

    ICS Number Code 13.040.20 (Ambient atmospheres)

    UNSPSC Code

    UNSPSC Code 77121500(Air pollution)


    DOI: 10.1520/D3162-12

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