EN 14211:2012
Ambient air - Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence

Standard No.
EN 14211:2012
Release Date
2012
Published By
European Committee for Standardization (CEN)
Latest
EN 14211:2012
Replace
EN 14211-2005
Scope
This European Standard 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 standard describes the performance characteristics and sets the relevant minimum criteria required to select an appropriate chemiluminescence 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 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/m 3. This concentration range represents the certification range for NO2 for the type approval test. The method is applicable to the determination of the concentration of nitrogen monoxide present in ambient air up to 1200 μg/m 3. This concentration range represents the certification range for NO for the type approval test. NOTE 1 It is possible to use other ranges depending on the levels present in ambient air. NOTE 2 When this European Standard is used for other purposes than for measurements required by Directive 2008/50/EC, the ranges and uncertainty requirements may 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 and traffic-orientated locations and locations influenced by industrial sources. The results are expressed in μg/m 3 (at 20 ℃ and 101,3 kPa). NOTE 3500 μg/m 3 of NO2 corresponds to 261 nmol/mol of NO2 at 20 ℃ and 101,3 kPa. 1200 μg/m 3 of NO corresponds to 962 nmol/mol of NO at 20 ℃ 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 NOx measurement by chemiluminescence analyser and sampling equipment. Clause 8 and Annex E are specifically directed towards test houses and laboratories that perform type-approval testing of NOx 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 NOx 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 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.

EN 14211:2012 Referenced Document

  • EN 15267-1 Air quality - Assessment of air quality monitoring equipment - Part 1: General principles of certification*2023-05-31 Update
  • EN 15267-2 Air quality - Assessment of air quality monitoring equipment - Part 2: Initial assessment of the manufacturer’s quality management system and post certification surveillance for the manufacturing process*2023-05-31 Update
  • EN ISO 14956 Air quality - Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty ISO 14956: 2002
  • EN ISO 6142 Gas analysis - Preparation of calibration gas mixtures - Gravimetric method
  • EN ISO 6143 Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures (ISO 6143:2001)
  • EN ISO 6144 Gas analysis - Preparation of calibration gas mixtures - Static volumetric method (ISO 6144:2003)
  • EN ISO 6145-6 Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 6: Critical flow orifices*2017-08-01 Update
  • EN ISO 6145-7 Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 7: Thermal mass-flow controllers*2018-12-01 Update
  • EN ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories*2017-12-01 Update

EN 14211:2012 history

  • 2012 EN 14211:2012 Ambient air - Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
  • 2005 EN 14211:2005 Ambient air quality - Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence



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