ASTM D3824-12
Standard Test Methods for Continuous Measurement of Oxides of Nitrogen in the Ambient or Workplace Atmosphere by the Chemiluminescent Method

Standard No.

ASTM D3824-12

Release Date

2012

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D3824-20

Latest

ASTM D3824-20

Scope

Most oxides of nitrogen are formed during high-temperature combustion. The Environmental Protection Agency (EPA) has set primary and secondary air quality standards for NO₂ that are designed to protect the public health and the public welfare (40 CFR, Part 50).

Oxides of nitrogen are generated by many industrial processes that can result in employee exposures. These are regulated by the Occupational Safety and Health Administration (OSHA) which has promulgated exposure limits for the industrial working environment (29 CFR, Part 1910).

These methods have been found satisfactory for measuring oxides of nitrogen in the ambient and workplace atmosphere over the ranges shown in 1.1.

1.1 These test methods cover procedures for the continuous determination of total nitrogen dioxide (NO₂) and nitric oxide (NO) as NO_x, or nitric oxide (NO) alone or nitrogen dioxide (NO₂) alone, in the ranges shown in the following table:

	Range of Concentration
Gas	Ambient Atmosphere	Workplace Atmosphere
	μg/m3 (ppm) (Note 1)	mg/m3 (ppm) (Note 1)
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)

Note 18212;Approximate range: 25°C and 101.3 kPa (1 atm).

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. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 9.

ASTM D3824-12 Referenced Document

• ASTM D1356 Standard Terminology Relating to Sampling and Analysis of Atmospheres*， 2024-04-19 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
• ASTM D3195 Standard Practice for Rotameter Calibration
• ASTM D3249 Standard Practice for General Ambient Air Analyzer Procedures
• ASTM D3609 Standard Practice for Calibration Techniques Using Permeation Tubes
• ASTM D3631 Standard Test Methods for Measuring Surface Atmospheric Pressure

ASTM D3824-12 history

• 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