General Information

Abstract: CEN/TC 264 origin - Editorial modifications in the Englsih + French reference versions only. (Changes were not necessary on the German ref. version as they had already been implemented in it.)

Status: Withdrawn
Publication Date: 15-Apr-2014
Withdrawal Date: 22-Sep-2026

ICS: 13.040.20 - Ambient atmospheres

Technical Committee: CEN/TC 264 - Air quality
Drafting Committee: CEN/TC 264/WG 12 - Reference method for determination of SO2/NO2/O3/CO in ambient air

Current Stage: 9960 - Withdrawal effective - Withdrawal
Start Date: 18-Dec-2024
Completion Date: 23-Sep-2026

Directive: Not Harmonized1999/30/EC - Limit values for sulphur dioxide, nitrogen dioxide and oxides of nitrogen, particulate matter and lead in ambient air

Ref Project: SIST EN 14212:2012/AC:2014 - Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence

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EN 14212:2012/AC:2014

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Replaced By: EN 14212:2024 - Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence
Effective Date: 25-Dec-2024

Corrects: EN 14212:2012 - Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence
Effective Date: 02-Apr-2014

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Corrigendum

EN 14212:2012/AC:2014

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Frequently Asked Questions

What is EN 14212:2012/AC:2014?

EN 14212:2012/AC:2014 is a corrigendum published by the European Committee for Standardization (CEN). Its full title is "Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence". This standard covers: CEN/TC 264 origin - Editorial modifications in the Englsih + French reference versions only. (Changes were not necessary on the German ref. version as they had already been implemented in it.)

What is the scope of EN 14212:2012/AC:2014?

CEN/TC 264 origin - Editorial modifications in the Englsih + French reference versions only. (Changes were not necessary on the German ref. version as they had already been implemented in it.)

What ICS categories does EN 14212:2012/AC:2014 belong to?

EN 14212:2012/AC:2014 is classified under the following ICS (International Classification for Standards) categories: 13.040.20 - Ambient atmospheres. The ICS classification helps identify the subject area and facilitates finding related standards.

What standards are related to EN 14212:2012/AC:2014?

EN 14212:2012/AC:2014 has the following relationships with other standards: It is inter standard links to EN 14212:2024, EN 14212:2012. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

Is EN 14212:2012/AC:2014 a harmonized European standard?

EN 14212:2012/AC:2014 is associated with the following European legislation: EU Directives/Regulations: 1999/30/EC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

How can I access EN 14212:2012/AC:2014?

EN 14212:2012/AC:2014 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

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EN 14212:2012/AC:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SORYHJDAußenluft - Messverfahren zur Bestimmung der Konzentration von Schwefeldioxid mit Ultraviolett-FluoreszenzAir ambiant - Méthode normalisée pour le mesurage de la concentration en dioxyde de soufre par fluorescence U.V.Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence13.040.20Kakovost okoljskega zrakaAmbient atmospheresICS:Ta slovenski standard je istoveten z:EN 14212:2012/AC:2014SIST EN 14212:2012/AC:2014en,fr01-julij-2014SIST EN 14212:2012/AC:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14212:2012/AC
April 2014
Avril 2014
April 2014 ICS 13.040.20 English version Version Française Deutsche Fassung
Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence
Air ambiant - Méthode normalisée pour le mesurage de la concentration en dioxyde de soufre par fluorescence U.V.
Außenluft - Messverfahren zur Bestimmung der Konzentration von Schwefeldioxid mit Ultraviolett-Fluoreszenz This corrigendum becomes effective on 16 April 2014 for incorporation in the official English and French versions of the EN.
Ce corrigendum prendra effet le 16 avril 2014 pour incorporation dans les versions officielles anglaise et française de la EN.
Die Berichtigung tritt am 16. April 2014 zur Einarbeitung in die offizielle Englische und Französische Fassung der EN in Kraft.
EUROPEAN COMMITTEE F
...

CEN

CEN/TS 18275:2026(Main)

Ambient air - Definition and use of modelling quality objectives for air quality assessment

SIST-TS CEN/TS 18275:2026

This document defines and describes the methodology to calculate Modelling Quality Indicators (MQI) and determine fulfilment of the Modelling Quality Objectives (MQO). MQO are provided to help ensure that modelling-based assessments of air quality in the context of the ambient air quality directive [1] are objective and comparable, and of sufficient quality to obtain reliable information about concentrations of air pollutants in ambient air. The method uses measurement uncertainty and a level of stringency as a benchmark for the acceptable level of difference between modelled and measured values.
This document concerns the performance of an entire modelling system therefore the term “modelling quality objectives” is used rather than “model quality objectives”. This document concerns the use of modelling results for assessment as specified in [2]. Such modelling systems aim to capture both the spatial and temporal variability of the environmental indicator under assessment in the modelling domain. This document establishes a method to determine if the results of a modelling system fulfil the MQO and therefore reach an adequate data quality level within the modelling domain defined for assessment.
The procedures described in this document are limited in scope as they concern only statistical performance indicators. A full evaluation of a modelling system considers additional elements of quality assurance, but such procedures are outside the scope of this document.
This document only addresses modelling applications where measurements of pollutant concentrations are available that meet the data requirements for the validation defined in this document. This document specifies MQO that are applicable to all concentration ranges that may occur in ambient air. In the context of this document, MQI and MQO are specified for:
-   daily and annual averaged concentrations of particulate matter with aerodynamic diameter less or equal to 2,5 µm (PM2.5);
-   daily and annual averaged concentrations of particulate matter with aerodynamic diameter less or equal to 10 µm (PM10);
-   hourly, daily and annual averaged concentrations of nitrogen dioxide (NO2);
-   maximum daily 8-hour mean and seasonal averaged concentrations of ozone (O3);
-   hourly, daily and annual averaged concentrations of sulphur dioxide (SO2);
-   maximum daily 8-hour mean and daily averaged concentrations for carbon monoxide (CO);
-   annual averaged concentrations for benzene (C6H6);
-   annual averaged concentrations for lead (Pb);
-   annual averaged concentrations for arsenic (As);
-   annual averaged concentrations for cadmium (Cd);
-   annual averaged concentrations for nickel (Ni);
-   annual averaged concentrations for benzo[a]pyrene (BaP).
This document addresses competent authorities, research institutions, consultants, or other bodies responsible for the performance of air quality modelling when applied for assessment purposes.
NOTE   Fulfilment of MQO is either normative or informative, depending on the quality of information used to determine the uncertainty parameters and stringency factors set out in this document.

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CEN

EN 18168:2026(Main)

Ambient air - Biomonitoring with higher plants - Method of the standardized rye-grass exposure

SIST EN 18168:2026

This document gives guidance on the procedure for the bioaccumulation of substances liable to cause atmospheric pollution. This is done by using the grass species Lolium multiflorum ssp. italicum designated hereafter as Italian rye-grass. It is an active biomonitoring approach insofar as the plants used are first cultivated in set conditions before being exposed at the monitoring locations in the field. The plants then record any pollution events that occur while they are being exposed, allowing such events to be accurately dated.
The document specifies a method for identification and localization of one or more single pollution sources and the tracking of their "plume" on a local or regional scale. The method described also offers a tool to monitor sites in the long term by the repeated application of a clearly defined procedure and to describe the local or regional air pollution situation.
The method described in this document is applicable to solid and gaseous substances deposited on plants, where they can accumulate on their surface or in their tissues. These substances include sulphur, chloride, fluoride and especially metals as well as low volatile organic and halo-organic compounds such as polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCB), polybrominated diphenyl ethers (PBDE), polychlorinated dibenzo dioxins (PCDD) and polychlorinated dibenzo furans (PCDF). It is as well possible to verify pesticides which are used in plant protection products. The range of potential substances can be expanded according to the task at hand and the capabilities of conducting trace analyses and assessment.
The method described in this document allows spatial and temporal comparisons and allows for screening, thus providing a first indication of risk. The results of grass culture studies can suggest risks to biota (e.g. via the food chain) which require further investigation.
The method described in this document does not replace physico-chemical methods of direct measurement or modelling of air pollutants and cannot be replaced by them for its part; it complements them by indicating biological effects.
Potential areas of deployment are:
-   permit procedures related to air pollution legislation;
-   preservation of evidence related to the code for protection from pollution;
-   monitoring of emission sources and performance control;
-   assessment of local-scale emission transport;
-   evidence of causation, e.g. related to environmental liability;
-   air quality maintenance plans/strategies;
-   long-term monitoring of ecological effects of atmospheric depositions;
-   detection and assessment of local, regional, and countrywide effects of atmospheric depositions;
-   assessment of risks for humans and/or animals via the food chain.
This document is of interest to those involved in environmental monitoring.

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14-Apr-2026
13.040.20
CEN/TC 264

CEN

EN 16339:2025(Main)

Ambient air - Method for the determination of the concentration of nitrogen dioxide by diffusive sampling

SIST EN 16339:2025

This document specifies a method for the sampling of NO2 in ambient air using diffusive sampling followed by extraction and analysis by colourimetry or ion chromatography (IC). It can be used for the NO2 measurement in a concentration range of approximately 3 µg/m3 to 130 µg/m3 [12]. A sample is typically collected for a period of 1 to 4 weeks [14], with exposure periods depending on the design of the samplers and the concentration levels of NO2.
Several sorbents can be used for trapping NO2 in ambient air using a diffusive sampler [15]. This document specifies the application of triethanolamine as the reagent.
This document describes the application of a tube-type sampler (with either a cylindrical or a slightly conical tube), a badge-type sampler and a radial-type sampler.
The relative expanded uncertainty of NO2 measurements performed using these tube-type diffusive samplers can potentially be lower than 25 % for individual measurements. When aggregating results to form annual average values, the relative expanded uncertainty can be further reduced to levels below 15 % due to the reduction of random effects on uncertainty [9].
NOTE NO2 passive samplers are also employed to measure NOx with the addition of an oxidant to convert ambient NO into NO2. A second NO2 sampler is also deployed without the oxidant and the concentration of NO is determined from the difference of the two samplers [16].

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CEN

EN 14625:2024(Main)

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

SIST EN 14625:2025

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.

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CEN

EN 14211:2024(Main)

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

SIST EN 14211:2025

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.

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CEN

EN 14212:2024(Main)

Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence

SIST EN 14212:2025

This document specifies a continuous measurement method for the determination of the concentration of sulfur dioxide present in ambient air based on the ultraviolet fluorescence measuring principle. This document describes the performance characteristics and sets the relevant minimum criteria required to select an appropriate ultraviolet fluorescence 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 mass concentration of sulphur dioxide present in ambient air up to 1000 µg/m3. This concentration range represents the certification range for sulfur dioxide for 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 Directive 2008/50/EC, the ranges and uncertainty requirements possibly do not apply.
The method covers the determination of ambient air concentrations of sulfur dioxide in locations classified as rural areas, urban-background areas, and for sampling influenced by traffic or industrial sources.
The results are expressed in µg/m3 (at 20 °C and 101,3 kPa).
NOTE 3   1 000 µg/m3 of SO2 corresponds to 376 nmol/mol of SO2.
This document contains information for different groups of users.
Clause 5 to Clause 7 and Annex C and Annex D contain general information about the principles of sulfur dioxide measurement by ultraviolet fluorescence analyser and sampling equipment.
Clause 8 and Annex E are specifically directed towards test houses and laboratories that perform type testing of sulfur dioxide 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 sulfur dioxide 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 sulfur dioxide 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 the measurement results under practical monitoring conditions.
This document represents an evolution of earlier editions (EN 14212:2005 and EN 14212:2012). 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.

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EN 14626:2024(Main)

Ambient air - Standard method for the measurement of the concentration of carbon monoxide by non-dispersive infrared spectroscopy

SIST EN 14626:2025

This European Standard specifies a continuous measurement method for the determination of the concentration of carbon monoxide present in ambient air based on the non-dispersive infrared spectroscopic measuring principle.
This standard describes the performance characteristics and sets the relevant minimum criteria required to select an appropriate non-dispersive infrared spectroscopic 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 mass concentration of carbon monoxide present in ambient air up to 100 mg/m3 carbon monoxide. This concentration range represents the certification range for the type approval test.
NOTE 1 Other ranges may be used depending on the levels present in ambient air.
NOTE 2 When the 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 carbon 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 mg/m3 (at 20 °C and 101,3 kPa).
NOTE 3 100 mg/m3 of CO corresponds to 86 μmol/mol of CO.
This standard contains information for different groups of users.
Clauses 5 to 7 and Annexes B, C and D contain general information about the principles of carbon monoxide measurement by non-dispersive infrared spectroscopic analyser and sampling equipment.
Clause 8 and Annex E are specifically directed towards test houses and laboratories that perform type-approval testing of carbon monoxide 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 carbon monoxide analyser based on the type approval test results.
Clauses 9 to 11 and Annex F are directed towards monitoring networks performing the practical measurements of carbon monoxide 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.

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CEN

CEN/TS 17660-2:2024(Main)

Air quality - Performance evaluation of air quality sensor systems - Part 2: Particulate matter in ambient air

SIST-TS CEN/TS 17660-2:2025

This document specifies the general principles, including testing procedures and requirements, for the classification of performance of low-cost sensor systems for the monitoring of particulate matter in ambient air at fixed sites. The classification of sensor systems includes tests that are performed under prescribed conditions. It does not guarantee performance in locations that are different from the tests, variations in meteorological climate from the test programme or account for stability over time, which can only be assessed under ongoing quality control strategies.
The described procedure is applicable to the determination of the mass concentration of particulate matter. The pollutants that are considered in this document are PM10 and PM2,5 in the range of concentrations expected in ambient air.
This document provides a classification that is consistent with the requirements for indicative measurements and objective estimation defined in Directive 2008/50/EC. In addition, it provides a classification for applications (non-regulatory measurements) that require more relaxed performance criteria.
This document applies to sensor systems used as individual systems. It does not apply to sensor systems as part of a sensor network. However, for some applications (e.g. in cities) sensor systems are deployed as part of a sensor network. Annex A provides information on the use of sensor systems as nodes in a sensor network.

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CEN

CEN/TS 18073:2024(Main)

Ambient air - Determination of lung deposited surface area (LDSA) concentration using aerosol monitors based on diffusion charging

SIST-TS CEN/TS 18073:2025

This document specifies a process for the electrical diffusion charging of aerosols with subsequent measurement of particle charge. With the aid of this method, it is possible to determine the lung-deposited surface area (LDSA) concentration of particles in ambient air. Depending on the design of the electrical diffusion charger, the LDSA of particles in the size range of approximately 20 nm to approximately 300 nm is measurable.
Furthermore, this document specifies design criteria for LDSA measuring aerosol monitors as well as performance criteria and the associated test procedures. The performance criteria depend on the application and they are more stringent when the instrument is operated in an air quality monitoring station.
In the determination of the LDSA concentration, the share of geometric particle surface area concentration is determined that can be deposited in the alveolar region of the human lung. Typical particle surface area concentrations with alveolar deposition measured in urban areas range from 5 µm2/cm3 to 50 µm2/cm3.
Instruments based on this measurement principle can be designed to be very compact with a low power consumption. This makes them ideally suited for handheld measurements, other forms of mobile application or to measure personal exposure. On the other hand, they can be easily adapted to serve as a stationary instrument in air quality monitoring stations.

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32 pages
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CEN

CEN/TS 18044:2024(Main)

Ambient air - Determination of the concentration of levoglucosan - Chromatographic method

SIST-TS CEN/TS 18044:2024

This document specifies a chromatographic method for the determination of levoglucosan in aqueous or organic extracts of filter samples collected in accordance with EN 12341:2023 [5]. The method has been tested for concentrations of ca. 10 ng/m3 up to ca. 3 000 ng/m3 with a sampling duration of 24 h. The procedure is also suitable for the determination of galactosan and mannosan.
Depending on the analysis instrumentation used, the carbohydrates inositol, glycerol, threitol/erythritol, xylitol, arabitol, sorbitol, mannitol, threalose, mannose, glucose, galactose and fructose can also be determined. However, no performance characteristics are given for these compounds in this document.

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42 pages
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02-Jul-2024
13.040.20
CEN/TC 264

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