ASTM D3608 - 95(2011)

    Standard Test Method for Nitrogen Oxides (Combined) Content in the Atmosphere by the Griess-Saltzman Reaction

    Active Standard ASTM D3608 | Developed by Subcommittee: D22.03

    Book of Standards Volume: 11.07


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    Significance and Use

    Both NO2 and NO play an important role in photochemical-smog-forming reactions. In sufficient concentrations NO2 is deleterious to health, agriculture, materials, and visibility.

    In combustion processes, significant amounts of NO may be produced by combination of atmospheric nitrogen and oxygen; at ambient temperatures, NO can be converted to NO2 by oxygen and other atmospheric oxidants. Nitrogen dioxide also may be generated from processes involving nitric acid, nitrates, the use of explosives, and welding.

    1. Scope

    1.1 This test method covers the manual determination of the combined nitrogen dioxide (NO2) and nitric oxide (NO) content, total NOx; in the atmosphere in the range from 4 to 10 000 μg/m3 (0.002 to 5 ppm (v)).

    1.2 The maximum sampling period is 60 min at a flow rate of 0.4 L/min.

    1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

    1.4 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.


    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

    D1071 Test Methods for Volumetric Measurement of Gaseous Fuel Samples

    D1193 Specification for Reagent Water

    D1356 Terminology Relating to Sampling and Analysis of Atmospheres

    D1357 Practice for Planning the Sampling of the Ambient Atmosphere

    D3195 Practice for Rotameter Calibration

    D3609 Practice for Calibration Techniques Using Permeation Tubes

    D3631 Test Methods for Measuring Surface Atmospheric Pressure

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    E128 Test Method for Maximum Pore Diameter and Permeability of Rigid Porous Filters for Laboratory Use


    ICS Code

    ICS Number Code 13.040.20 (Ambient atmospheres)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/D3608-95R11

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