ASTM D3824-20 PDF

Scope: 1.1 These test methods cover procedures for the continuous determination of total nitrogen dioxide (NO2) and nitric oxide (NO) as NOx, or nitric oxide (NO) alone or nitrogen dioxide (NO2) alone, in the ranges shown in the following table: Approximate Range of Concentration (25°C and 101.3 kPa (1 atm)) Gas Ambient Atmosphere Workplace Atmosphere µg/m3 (ppm) mg/m3 (ppm) NO 10 to 600 (0.01 to 0.5) 0.6 to 30 (0.5 to 25) (NO + NO2) = NOx 20 to 1000 (0.01 to 0.05) 1 to 50 (0.5 to 25) NO2 20 to 1000 (0.01 to 0.5) 1 to 50 (0.5 to 25) 1.2 The test methods are based on the chemiluminescent reaction between nitric oxide and ozone. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 9. 1.5 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.

ASTM D3824-20 Referenced Document

ASTM D1356 Standard Terminology Relating to Sampling and Analysis of Atmospheres*， 2024-04-21 Update
ASTM D1357 Standard Practice for Planning the Sampling of the Ambient Atmosphere
ASTM D1914 Standard Practice for Conversion Units and Factors Relating to Sampling and Analysis of Atmospheres*， 2022-09-01 Update
ASTM D3195/D3195M Standard Practice for Rotameter Calibration*， 2023-09-01 Update
ASTM D3249 Standard Practice for General Ambient Air Analyzer Procedures
ASTM D3609 Standard Practice for Calibration Techniques Using Permeation Tubes*， 2022-11-01 Update
ASTM D3631 Standard Test Methods for Measuring Surface Atmospheric Pressure

2020 ASTM D3824-20 Standard Test Methods for Continuous Measurement of Oxides of Nitrogen in the Ambient or Workplace Atmosphere by Chemiluminescence
2012 ASTM D3824-12 Standard Test Methods for Continuous Measurement of Oxides of Nitrogen in the Ambient or Workplace Atmosphere by the Chemiluminescent Method
1995 ASTM D3824-95(2005) Standard Test Methods for Continuous Measurement of Oxides of Nitrogen in the Ambient or Workplace Atmosphere by the Chemiluminescent Method
1995 ASTM D3824-95(2000) Standard Test Methods for Continuous Measurement of Oxides of Nitrogen in the Ambient or Workplace Atmosphere by the Chemiluminescent Method