EN 16339:2025
(Main)Ambient air - Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
Ambient air - Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
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].
Außenluft - Bestimmung der Konzentration von Stickstoffdioxid mittels Passivsammler
Dieses Dokument legt ein Verfahren zur Probenahme von NO2 in Außenluft mit Passivsammlern sowie der anschließenden Extraktion und Analyse mittels Kolorimetrie oder Ionenchromatographie (IC) fest. Es kann im Konzentrationsbereich von etwa 3 µg/m3 bis 130 µg/m3 an NO2 angewendet werden [12]. Eine Probe wird üblicherweise über einen Expositionszeitraum von 1 Woche bis 4 Wochen genommen [14], wobei dieser von der Ausführung des Sammlers und dem NO2-Konzentrationsniveau abhängt.
Zur Bindung des in der Luft enthaltenen NO2 mit einem Passivsammler können verschiedene Sorptionsmittel verwendet werden [15]. In diesem Dokument ist Triethanolamin als Sorptionsmittel festgelegt.
Dieses Dokument beschreibt die Anwendung von Sammlern des Röhrchentyps (mit zylindrischem oder konischem Röhrchen), des Plakettentyps und des radialen Typs.
Die relative erweiterte Unsicherheit von mit Passivsammlern des Röhrchentyps durchgeführten NO2-Messungen kann bei Einzelmessungen unter 25 % liegen. Werden die Ergebnisse zu Jahresmittelwerten zusammengefasst, kann die relative erweiterte Unsicherheit aufgrund der Verringerung der zufälligen Einflüsse auf unter 15 % sinken [9].
ANMERKUNG Durch Zusatz eines Oxidationsmittels (Umwandlung von NO in NO2) können NO2-Passivsammler werden auch zur Messung von NOx verwendet werden. Durch gleichzeitigen Einsatz eines zweiten NO2-Sammlers ohne das Oxidationsmittel kann die NO Konzentration anhand der Differenz der beiden Sammler ermittelt werden [16].
Air ambiant - Méthode de détermination de la concentration en dioxyde d’azote au moyen d’échantillonneurs par diffusion
Le présent document spécifie une méthode pour le prélèvement du NO2 dans l’air ambiant par échantillonnage par diffusion, suivi de l’extraction et de l’analyse par colorimétrie ou chromatographie ionique (CI). Il peut être utilisé pour le mesurage du NO2 dans une gamme de concentration allant de 3 µg/m³ à 130 µg/m3 environ [12]. Un échantillon est habituellement collecté sur une période de 1 à 4 semaines [14], les durées d’exposition dépendant de la conception des échantillonneurs et des niveaux de concentration en NO2.
Plusieurs sorbants peuvent être utilisés pour piéger le NO2 contenu dans l’air ambiant à l’aide d’un échantillonneur par diffusion [15]. Le présent document spécifie l’utilisation de triéthanolamine comme réactif.
Le présent document décrit la mise en œuvre d’un échantillonneur de type tube (intégrant un tube cylindrique ou légèrement conique), d’un échantillonneur de type badge et d’un échantillonneur à diffusion radiale.
L’incertitude élargie relative des mesurages du NO2 réalisés à l’aide de ces échantillonneurs par diffusion de type tube peut potentiellement être inférieure à 25 % pour les mesurages individuels. Lors de l’agrégation des résultats pour obtenir les valeurs moyennes annuelles, l’incertitude élargie relative peut être encore réduite à des niveaux inférieurs à 15 % en raison de la diminution des effets aléatoires sur l’incertitude [9].
NOTE Les échantillonneurs passifs de NO2 sont également utilisés pour mesurer les NOx en ajoutant un oxydant pour convertir le NO ambiant en NO2. Un second échantillonneur de NO2 est également déployé sans l’oxydant et la concentration en NO est déterminée d’après la différence entre les deux échantillonneurs [16].
Zunanji zrak - Metoda za določanje koncentracije dušikovega dioksida z difuzijskim vzorčenjem
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2025
Nadomešča:
SIST EN 16339:2013
Zunanji zrak - Metoda za določanje koncentracije dušikovega dioksida z
difuzijskim vzorčenjem
Ambient air - Method for the determination of the concentration of nitrogen dioxide by
diffusive sampling
Außenluft - Bestimmung der Konzentration von Stickstoffdioxid mittels Passivsammler
Air ambiant - Méthode pour la détermination de la concentration du dioxyde d'azote au
moyen d'échantillonneurs par diffusion
Ta slovenski standard je istoveten z: EN 16339:2025
ICS:
13.040.20 Kakovost okoljskega zraka Ambient atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 16339
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2025
EUROPÄISCHE NORM
ICS 13.040.20 Supersedes EN 16339:2013
English Version
Ambient air - Method for the determination of the
concentration of nitrogen dioxide by diffusive sampling
Air ambiant - Méthode de détermination de la Außenluft - Bestimmung der Konzentration von
concentration en dioxyde d'azote au moyen Stickstoffdioxid mittels Passivsammler
d'échantillonneurs par diffusion
This European Standard was approved by CEN on 24 February 2025.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16339:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Description of samplers. 8
4.1 Principle . 8
4.2 Diffusive samplers . 9
4.2.1 Description . 9
4.2.2 Preparation . 9
4.2.3 Storage of samplers before and after sampling . 10
4.2.4 Chemical interferences . 10
4.3 Protective devices . 10
4.3.1 General . 10
4.3.2 Protective shelter . 10
4.3.3 Protective filter . 11
4.4 Instructions for use . 11
5 Analysis. 11
5.1 General . 11
5.2 Colorimetric method . 12
5.2.1 General . 12
5.2.2 Calibration . 12
5.2.3 Extraction . 12
5.2.4 Analysis. 13
5.3 Ion chromatography method . 13
5.3.1 General . 13
5.3.2 Calibration . 13
5.3.3 Extraction . 13
5.3.4 Analysis. 14
6 Calculation of the concentration of nitrogen dioxide . 14
6.1 Diffusive sampling rate . 14
6.2 Mass concentration . 15
6.3 Conversion to standard conditions of temperature and pressure . 16
7 Quality control/quality assurance . 16
8 Measurement strategy . 17
8.1 Calibration of the diffusive sampling rate . 17
8.2 Siting criteria . 18
8.3 Use of replicates . 18
8.4 Exposure. 18
8.5 Co-location sites . 18
8.6 Auxiliary information . 19
9 Performance requirements and measurement uncertainty . 19
10 Report . 19
Annex A (normative) Description of tube-type samplers . 21
Annex B (informative) Description of other samplers . 27
Annex C (informative) Estimation of the diffusive sampling rate of the samplers . 32
Annex D (informative) Measurement uncertainty . 37
Annex E (informative) Reagents and equipment for analysis . 47
Annex F (informative) Validation data of the use of protective devices . 50
Bibliography . 51
European foreword
This document (EN 16339:2025) has been prepared by Technical Committee CEN/TC 264 “Air quality”,
the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2025, and conflicting national standards shall
be withdrawn at the latest by October 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document will supersede EN 16339:2013.
A list of the significant technical changes compared to EN 16339:2013 can be found in Annex G.
— 4.2 and Annex A: examples of demonstration of equivalence with respect to the reference method
are provided;
— 4.3 and Annex F: protective devices have been described including the advantages over the
conventional design of samplers;
— Annex D: More contemporary data included for the equivalence method determination of the
measurement uncertainty;
— Annex D: Sampling rates have been updated.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
Introduction
EU Directive 2008/50/EC [1] stipulates that European Union Member States apply measurement
methods for air quality pollutants (fixed measurement, modelling, indicative measurement, objective
estimation) and associated Data Quality Objectives (DQO), depending on concentrations observed in
different situations. Diffusive sampling is most often used as “indicative measurement”. The methodology
described in this document has been developed to ensure the possibility for diffusive sampling to partially
substitute and supplement fixed monitoring (where the reference method being that described in
EN 14211 [2] is used) as a tool for the assessment of nitrogen dioxide (NO ) with corresponding DQO.
Instead of the reference method, users may employ any other method which has been demonstrated to
be equivalent according to the Guide for the Demonstration of Equivalence (GDE) [3]
Diffusive sampling is an attractive alternative to fixed monitoring by reference methodology (described
in EN 14211) for the measurement of NO . This is due to:
— small size of diffusive samplers;
— no requirement for electric power;
— potential for covering areas with a high spatial density;
— cost effectiveness.
Consequently, diffusive samplers can partially substitute and supplement fixed monitoring as a means
for the assessment of air quality, provided that they fulfil the specific DQO given in [1].
Passive samplers can be used for indicative measurements to complement air quality networks, improve
modelling techniques and other air quality assessments, such as NO concentrations for comparing with
UNECE Critical Levels (annual mean of 30 µg NO /m , expressed as a NO equivalent) for the protection
x 2
of vegetation and natural ecosystems [4] [5] [6].
A demonstrati
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.