Standards for O₃ in the atmosphere have been promulgated by government authorities to protect the health and welfare of the public (5) and also for the protection of industrial workers (6).

Although O₃ itself is a toxic material, in ambient air it is primarily the photochemical oxidants formed along with O₃ in polluted air exposed to sunlight that cause smog symptoms such as lachrymation and burning eyes. Ozone is much more easily monitored than these photochemical oxidants and provides a good indication of their concentrations, and it is therefore the substance that is specified in air quality standards and regulations.

1. Scope

1.1 This test method describes the sampling and continuous analysis of ozone (O₃) in the atmosphere at concentrations ranging from 10 to 2000 μg/m³ of O₃ in air (5 ppb(v) to 1 ppm(v)).

1.1.1 The test method is limited to applications by its sensitivity to interferences as described in Section 6. The interference sensitivities may limit its use for ambient and workplace atmospheres.

1.2 The values stated in SI units are to be regarded as the standard.

1.3 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

D1356 Terminology Relating to Sampling and Analysis of Atmospheres

D1357 Practice for Planning the Sampling of the Ambient Atmosphere

D1914 Practice for Conversion Units and Factors Relating to Sampling and Analysis of Atmospheres

D3249 Practice for General Ambient Air Analyzer Procedures

D3631 Test Methods for Measuring Surface Atmospheric Pressure

D3670 Guide for Determination of Precision and Bias of Methods of Committee D22

D5011 Practices for Calibration of Ozone Monitors Using Transfer Standards

D5110 Practice for Calibration of Ozone Monitors and Certification of Ozone Transfer Standards Using Ultraviolet Photometry

Other Documents

Keywords

ambient atmospheres; indoor atmospheres; monitoring; ozone; ultraviolet absorption; workplace atmospheres; Air monitoring; Ambient air/atmospheric analysis; Continuous measurement/monitoring--atmospheric analysis; Indoor air analysis; Ozone (O3); Photometry; Ultraviolet (UV) analysis--atmospheric applications; Workplace air/atmospheres;

ICS Code

ICS Number Code 13.040.30 (Workplace atmospheres)

Citing ASTM Standards

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