BS ISO 7935:2024
Stationary source emissions. Determination of the mass concentration of sulfur dioxide in flue gases. Performance characteristics of automated measuring systems

Standard No.

BS ISO 7935:2024

Release Date

2024

Published By

British Standards Institution (BSI)  GB  /  BSI

Latest

BS ISO 7935:2024

Scope

This document specifies a method for the determination of sulfur dioxide (SO2) in flue gases from stationary sources and describes the basic structure and key performance characteristics of an automated measurement system. The method allows the continuous monitoring of SO2 emissions using a permanently installed measurement system. This document describes extractive and non-extractive (in situ) systems, as well as the operating principles of a range of analyzers, such as: non-dispersive infrared absorption (NDIR), Fourier transform infrared spectroscopy (FTIR), laser spectroscopy techniques or tunable laser spectroscopy (TLS), non-dispersive ultraviolet absorption (NDUV), differential optical absorption spectroscopy (DOAS). Other equivalent instrumental methods may also be used, provided they meet the minimum performance requirements specified in this document. The measurement system may be validated using reference materials according to this document or similar methods.

BS ISO 7935:2024 Referenced Document

• ISO 14956 Air quality - Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty
• ISO 9169 Air quality - Definition and determination of performance characteristics of an automatic measuring system

BS ISO 7935:2024 history

• 2024 BS ISO 7935:2024 Stationary source emissions. Determination of the mass concentration of sulfur dioxide in flue gases. Performance characteristics of automated measuring systems

Standard and Specification