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ASTM D3608-95(2011)

Historical Reaffirmation

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

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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.

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.

SDO ASTM: ASTM International
Document Number D3608
Publication Date Oct. 1, 2011
Language en - English
Page Count 5
Revision Level 95(2011)
Supercedes
Committee D22.03
Publish Date Document Id Type View
March 1, 2019 D3608-19 Revision
Oct. 1, 2011 D3608-95R11 Reaffirmation
Oct. 1, 2005 D3608-95R05 Reaffirmation
Jan. 1, 2000 D3608-95R00E01 Reaffirmation