BS EN 14211:2024 - Ambient Air Measurement Standard

Discover the latest in air quality measurement with the BS EN 14211:2024 standard. This comprehensive document provides the definitive method for measuring the concentration of nitrogen dioxide (NO₂) and nitrogen monoxide (NO) in ambient air using the chemiluminescence technique. Released on December 23, 2024, this standard is essential for professionals in environmental science, air quality monitoring, and regulatory compliance.

Key Features

• Standard Number: BS EN 14211:2024
• Pages: 124
• Release Date: December 23, 2024
• ISBN: 978 0 539 20979 2
• Status: Standard

Comprehensive Coverage

Spanning 124 pages, this standard offers an in-depth exploration of the chemiluminescence method, a highly sensitive and specific technique for detecting nitrogen oxides in the atmosphere. The document provides detailed guidance on the setup, calibration, and operation of chemiluminescence analyzers, ensuring accurate and reliable measurements.

Why Choose Chemiluminescence?

Chemiluminescence is a preferred method for measuring nitrogen oxides due to its high sensitivity and specificity. This technique involves the reaction of nitrogen monoxide with ozone, producing a luminescent reaction that can be quantitatively measured. The BS EN 14211:2024 standard outlines the precise conditions and procedures necessary to achieve optimal results, making it an invaluable resource for laboratories and monitoring stations.

Applications and Benefits

The BS EN 14211:2024 standard is crucial for a wide range of applications, including:

• Environmental Monitoring: Ensure compliance with air quality regulations by accurately measuring NO₂ and NO levels in the atmosphere.
• Research and Development: Support scientific studies and innovation in air quality management and pollution control.
• Industrial Compliance: Assist industries in monitoring emissions and adhering to environmental standards.

Stay Ahead with the Latest Standards

As environmental concerns continue to grow, staying informed with the latest standards is more important than ever. The BS EN 14211:2024 standard reflects the most current scientific understanding and technological advancements in air quality measurement. By implementing this standard, organizations can enhance their environmental stewardship and contribute to a healthier planet.

Who Should Use This Standard?

This standard is designed for a diverse audience, including:

• Environmental Scientists: Gain insights into the latest methodologies for air quality assessment.
• Regulatory Agencies: Ensure compliance with national and international air quality standards.
• Industrial Facilities: Monitor and manage emissions to meet environmental regulations.
• Academic Institutions: Support educational programs and research initiatives in environmental science.

Conclusion

The BS EN 14211:2024 standard is an essential tool for anyone involved in air quality measurement and management. With its detailed guidance on the chemiluminescence method, this standard provides the foundation for accurate and reliable nitrogen oxide monitoring. Embrace the latest advancements in environmental science and ensure your practices align with the highest standards of air quality measurement.

BS EN 14211:2024

This standard BS EN 14211:2024 Ambient air. Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence is classified in these ICS categories:

• 13.040.20 Ambient atmospheres

This document specifies a continuous measurement method for the determination of the concentrations of nitrogen dioxide and nitrogen monoxide present in ambient air based on the chemiluminescence measuring principle. This document describes the performance characteristics and sets the relevant minimum criteria required to select an appropriate chemiluminescence analyser by means of type testing. It also includes the evaluation of the suitability of an analyser for use in a specific fixed site so as to meet the data quality requirements as specified in Annex I of Directive 2008/50/EC [1] and requirements during sampling, calibration and quality assurance for use. The method is applicable to the determination of the concentration of nitrogen dioxide present in ambient air up to 500 µg/m3. This concentration range represents the certification range for nitrogen dioxide for type testing. The method is applicable to the determination of the concentration of nitrogen monoxide present in ambient air up to 1 200 µg/m3. This concentration range represents the certification range for nitrogen monoxide for the type testing. NOTE 1 It is possible to use other ranges depending on the levels present in ambient air. NOTE 2 When this document is used for purposes other than for measurements required by Directive2008/50/EC, the ranges and uncertainty requirements possibly do not apply. The method covers the determination of ambient air concentrations of nitrogen dioxide and nitrogen monoxide in zones classified as rural areas, urban-background areas, traffic-orientated locations and locations influenced by industrial sources. The results are expressed in µg/m3 (at 20 °C and 101,3 kPa). NOTE 3 500 µg/m3 of nitrogen dioxide corresponds to 261 nmol/mol of nitrogen dioxide at 20 °C and 101,3 kPa. 1 200 µg/m3 of nitrogen monoxide corresponds to 962 nmol/mol of nitrogen monoxide at 20 °C and 101,3 kPa. This document contains information for different groups of users. Clause 5 to Clause 7 and Annex B and Annex C contain general information about the principles of NOx measurement by chemiluminescence analyser and sampling equipment. Clause 8 and Annex E are specifically directed towards test houses and laboratories that perform type testing of NOx analysers. These sections contain information about: — type testing conditions, test procedures and test requirements; — analyser performance requirements; — evaluation of the type testing results; — evaluation of the uncertainty of the measurement results of the NOx analyser based on the type testing results. Clause 9 to Clause 11 and Annex F and Annex G are directed towards monitoring networks performing the practical measurements of NOx in ambient air. These sections contain information about: — initial installation of the analyser in the monitoring network and acceptance testing; — ongoing quality assurance/quality control; — calculation and reporting of measurement results; — evaluation of the uncertainty of measurement results under practical monitoring conditions. This document represents an evolution of earlier editions (EN 14211:2005 and EN 14211:2012). It is advisable that when equipment is procured it complies fully with this document. NOTE 4 Type testing performed prior to the publication of this document for the purpose of demonstrating equivalence are still valid. NOTE 5 Analysers type tested prior to the publication of this document remain valid for use for regulated monitoring purposes.