ISO 10313-1993 amd1-2024 PDF

Full title and description

ISO 10313:1993/Amd 1:2024 — Ambient air — Determination of the mass concentration of ozone — Chemiluminescence method — Amendment 1: Consensus value for the ozone absorption cross-section at room temperature at the mercury-line wavelength (253,65 nm air). This amendment updates numerical constants used in the chemiluminescence method to provide a consensus ozone absorption cross‑section value for the 253.65 nm mercury line.

Abstract

The original ISO 10313:1993 specifies a chemiluminescence method for measuring the mass concentration of ozone in ambient air (sampling through a particle filter, reaction with ethylene in a reaction chamber and measurement of emitted light around 400 nm). Amendment 1 (2024) supplies a consensus value for the ozone absorption cross‑section at the mercury-line wavelength 253.65 nm (air) and updates related numerical constants used to convert instrument response to mass concentration, improving consistency and traceability of ozone measurements and instrument calibration.

General information

• Status: Published / Current.
• Publication date: July 2024 (Edition 1, Amendment 1 published 2024-07).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.040.20 (Ambient atmospheres / Air quality).
• Edition / version: Base standard ISO 10313:1993 (Edition 1, 1993); Amendment 1 issued 2024 (Edition 1, Amd 1:2024).
• Number of pages: Base standard: 9 pages; Amendment 1: 1 page.

Scope

Applies to the chemiluminescence reference/measurement method for the determination of ozone mass concentration in ambient air. The amendment provides a single consensus value for the ozone absorption cross‑section at 253.65 nm (mercury line, at room temperature, in air) and clarifies the numerical constant(s) used in concentration calculations so that laboratories and instrument manufacturers use a consistent parameter set for calibration and reporting.

Key topics and requirements

• Chemiluminescence measurement principle: sampling through a particle filter, reaction of ozone with excess ethylene in a reaction chamber, light emission measured by a photomultiplier (peak ≈400 nm).
• Consensus ozone absorption cross‑section value at 253.65 nm (mercury line, room temperature in air) provided by the amendment for use in calculations and calibrations.
• Updated numerical constants and calculation guidance to improve inter‑laboratory agreement and instrument traceability.
• Measurement range and applicability (as given in the base method): typical mass concentration range covered by the method (from microgram‑scale concentrations up to mg/m3 levels in ambient air).

Typical use and users

Used by environmental and air‑quality monitoring laboratories, national and regional monitoring networks, instrument manufacturers (ozone monitors/calibrators), research institutions working on atmospheric chemistry, and regulatory agencies establishing measurement procedures and calibration requirements for ambient ozone. The amendment is primarily relevant to those requiring consistent absorption cross‑section values for instrument calibration and intercomparison.

Related standards

Standards for ozone measurement using other methods (for example, UV photometric methods such as ISO 13964 and national/adopted versions) are related; Amendment 1 aligns numerical parameters used in chemiluminescence procedures with consensus values used across methods where appropriate. Users should consult ISO/TC 146/SC 3 publications and applicable regional or national documents for complementary methods and harmonized parameter choices.

Keywords

ozone; ambient air; chemiluminescence; absorption cross‑section; 253.65 nm; mercury line; air quality; calibration; measurement method; ISO 10313; amendment 2024.

FAQ

Q: What is this standard?

A: ISO 10313:1993 specifies a chemiluminescence method for determining the mass concentration of ozone in ambient air; Amendment 1 (2024) provides a consensus ozone absorption cross‑section value for the 253.65 nm mercury line to be used in calculations and calibrations.

Q: What does it cover?

A: The base standard covers sampling, reaction with ethylene, light detection and calculation of ozone mass concentration; the amendment supplies a standardized numerical value (absorption cross‑section at 253.65 nm) and related numeric updates to improve consistency.

Q: Who typically uses it?

A: Environmental monitoring laboratories, instrument manufacturers, air‑quality networks, research groups and regulators involved in ambient ozone measurement and instrument calibration.

Q: Is it current or superseded?

A: The base ISO 10313:1993 remains the normative document; Amendment 1:2024 was published in July 2024 and is a current published amendment to the 1993 standard (i.e., it updates the 1993 text with the agreed numeric value but does not supplant the base method). Users should reference the base standard together with Amendment 1 when applying the updated constants.

Q: Is it part of a series?

A: It is part of ISO technical work in air quality and ambient atmospheres (ISO/TC 146/SC 3). Related ISO documents address alternative ozone measurement methods (for example UV photometric methods) and harmonized parameters; consult ISO/TC 146 publications for the broader set of methods.

Q: What are the key keywords?

A: Ozone, ambient air, chemiluminescence, absorption cross‑section, 253.65 nm, mercury line, air quality, calibration, measurement method.