ASTM D1607-91 (2018)e1 PDF

Full title and description

Standard Test Method for Nitrogen Dioxide Content of the Atmosphere (Griess‑Saltzman Reaction), designated ASTM D1607‑91 (2018)e1. The standard describes a manual colorimetric procedure using the Griess‑Saltzman reaction for determination of nitrogen dioxide (NO2) in ambient and near‑ambient atmospheres.

Abstract

This test method covers the collection and colorimetric determination of NO2 in air samples absorbed in fritted‑tip bubblers and measured by the Griess‑Saltzman reaction. It is intended for concentrations roughly in the range 4 to 10 000 µg/m3 (0.002 to 5 ppm(v)) for typical ambient sampling; higher concentrations or samples with high SO2 require alternative methods. The procedure includes sampling flow and time guidance, reagent preparation, interferences, and recommended absorber frit characteristics.

General information

• Status: Active / Editorially corrected reapproval (D1607‑91R18E01 / D1607‑91 (2018)e1).
• Publication date: Current edition approved July 1, 2018 (published July 2018).
• Publisher: ASTM International.
• ICS / categories: Ambient atmospheres / air quality testing (ICS code commonly cited as 13.040.20).
• Edition / version: Designation D1607‑91 (2018) e1 — editorially corrected reapproval (often shown as D1607‑91R18E01).
• Number of pages: 5 pages.

Scope

The standard specifies a manual analytical method for measuring nitrogen dioxide in the atmosphere using fritted‑tip bubblers and the Griess‑Saltzman colorimetric reaction. It defines the applicable concentration range, maximum sampling period (typical maximum 60 minutes at ~0.4 L/min), limitations (e.g., interferences from high SO2 or very high NO2 concentrations), and the physical requirements for absorbers (frit porosity). It is intended for ambient monitoring, research, and source‑related sampling when this manual method is appropriate.

Key topics and requirements

• Sampling using fritted‑tip bubblers with specified porosity and maximum pore diameter guidance (recommended frit characteristics described).
• Griess‑Saltzman colorimetric reaction for NO2 determination, including reagent preparation and color development conditions.
• Analytical range approximately 4 to 10 000 µg/m3 (0.002 to 5 ppm(v)) for the stated sampling configuration; recommendations to use other methods for much higher concentrations or sulfur dioxide–rich samples.
• Sampling parameter recommendations (example: maximum sampling period ~60 min at ~0.4 L/min) and notes on sampling efficiency and pressure drop for small‑pore frits.
• Discussion of interferences (notably sulfur dioxide) and procedural precautions including safety and health considerations.

Typical use and users

Used by environmental and analytical laboratories, field air‑quality monitoring teams, academic researchers studying atmospheric chemistry or photochemical smog, and regulatory agencies requiring validated manual methods for NO2 when instrumental options are not available or appropriate. The method is suitable for routine ambient sampling, field studies, and comparative laboratory analysis.

Related standards

Related ASTM and referenced methods include other NOx/NO2 methods and gas analysis standards (for example, methods addressing oxides of nitrogen in combustion products and alternative NO2 procedures). The standard references related test methods and measurement practices used in ambient atmospheres (see referenced standards list within the document).

Keywords

nitrogen dioxide; NO2; Griess‑Saltzman; colorimetric analysis; ambient air; atmospheric sampling; fritted bubbler; air quality; NOx; test method.

FAQ

Q: What is this standard?

A: ASTM D1607‑91 (2018)e1 is a standard test method that specifies a manual colorimetric procedure (Griess‑Saltzman reaction) for determining nitrogen dioxide content in atmospheric air samples collected in fritted‑tip bubblers.

Q: What does it cover?

A: It covers sampling, reagent preparation, analytical measurement by the Griess‑Saltzman reaction, concentration range guidance, sampling period and flow recommendations, and notes on interferences and absorber frit characteristics. It also includes safety and procedural notes.

Q: Who typically uses it?

A: Environmental laboratories, field monitoring programs, researchers in atmospheric chemistry, and regulatory or standards organizations that require an established manual method for NO2 analysis.

Q: Is it current or superseded?

A: D1607‑91 (2018)e1 has been maintained as an active reapproved editorially corrected edition; however, a later ASTM revision designation (for example D1607‑26) appears in catalogs as a 2026 revision. Users should check the ASTM catalog or their standards provider for the most recent official designation and any revisions after January 1, 2026 to confirm current status for compliance or procurement.

Q: Is it part of a series?

A: It falls under ASTM Committee D22 on Air Quality and Subcommittee D22.03 (Ambient Atmospheres and Source Emissions); related NOx and atmospheric measurement methods are developed under the same committee structure.

Q: What are the key keywords?

A: NO2, nitrogen dioxide, Griess‑Saltzman, colorimetric, ambient atmospheres, fritted bubbler, air quality, sampling, NOx.