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BS EN 14625:2012

Current

Current

The latest, up-to-date edition.

Ambient air. Standard method for the measurement of the concentration of ozone by ultraviolet photometry

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-09-2012

€327.21
Excluding VAT

Committee
EH/2/3
DevelopmentNote
Supersedes BS ISO 13964 and 03/306306 DC. (04/2005) Supersedes 10/30210753 DC. (09/2012) Reviewed and confirmed by BSI, April 2018. (04/2018)
DocumentType
Standard
Pages
98
PublisherName
British Standards Institution
Status
Current
Supersedes

This European Standard specifies a continuous measurement method for the determination of the concentrations of ozone present in ambient air based on the ultraviolet photometric measuring principle. This standard describes the performance characteristics and sets the relevant minimum criteria required to select an appropriate ultraviolet photometric analyser by means of type approval tests. 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 ozone present in ambient air up to 500 μg/m3. This concentration range represents the certification range for ozone for the type approval test.

NOTE 1 Other ranges may be used for measurement systems applied at rural locations monitoring ecosystems.

NOTE 2 When the standard is used for other purposes than Directive 2008/50/EC, the ranges and uncertainty requirements may not apply.

The method covers the determination of ambient air concentrations of ozone in zones classified as rural areas, urban and urban-background areas.

The results are expressed in μg/m3 (at 20 °C and 101,3 kPa).

NOTE 3 500 μg/m3 of O3 corresponds to 250 nmol/mol of O3 at 20 °C and 101,3 kPa.

This standard contains information for different groups of users.

Clauses 5 to 7 and Annexes B and C contain general information about the principles of ozone measurement by ultraviolet photometric analyser and sampling equipment.

Clause 8 and Annex E are specifically directed towards test houses and laboratories that perform type-approval testing of ozone analysers. These sections contain information about:

  • type-approval test conditions, test procedures and test requirements;

  • analyser performance requirements;

  • evaluation of the type-approval test results;

  • evaluation of the uncertainty of the measurement results of the ozone analyser based on the type-approval test results.

Clauses 9 to 11 and Annexes F and G are directed towards monitoring networks performing the practical measurements of ozone 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.

Standards Relationship
NBN EN 14625 : 2012 Identical
NS EN 14625 : 2012 Identical
SN EN 14625:2012 Identical
NF EN 14625 : 2013 Identical
DIN EN 14625:2012-12 Identical
UNE-EN 14625:2013 Identical
NEN EN 14625 : 2012 Identical
EN 14625:2012 Identical
UNI EN 14625 : 2012 Identical
I.S. EN 14625:2012 Identical

ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
ISO 13964:1998 Air quality — Determination of ozone in ambient air — Ultraviolet photometric method
ISO 6145-7:2009 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 7: Thermal mass-flow controllers
ISO 14956:2002 Air quality — Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty
EN ISO 6145-7:2010 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 7: Thermal mass-flow controllers (ISO 6145-7:2009)
EN 15267-2:2009 Air quality - Certification of automated measuring systems - Part 2: Initial assessment of the AMS manufacturer’s quality management system and post certification surveillance for the manufacturing process
ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
EN ISO 20988:2007 Air quality - Guidelines for estimating measurement uncertainty (ISO 20988:2007)
EN ISO 9001:2015 Quality management systems - Requirements (ISO 9001:2015)
EN ISO 14956:2002 Air quality - Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty (ISO 14956:2002)
ISO 9001:2015 Quality management systems — Requirements
ENV 13005 : DRAFT 1999 GUIDE TO THE EXPRESSION OF UNCERTAINTY IN MEASUREMENT
VDI 2453 Blatt 2:2002-10 Gaseous air pollution measurement - Measurement of concentration of nitrogen monoxide and nitrogen dioxide - Calibration of NO/NO chemiluminescence analysers using gas phase titration
ISO 15337:2009 Ambient air Gas phase titration Calibration of analysers for ozone
EN ISO 6145-6:2017 Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 6: Critical flow orifices (ISO 6145-6:2017)
ISO 20988:2007 Air quality Guidelines for estimating measurement uncertainty
ISO 6145-6:2017 Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 6: Critical flow orifices
EN 15267-1:2009 Air quality - Certification of automated measuring systems - Part 1: General principles

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