prEN 16339
(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 colorimetry 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-Sammler 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 določevanje koncentracije dušikovega dioksida z difuzijskim vzorčenjem
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2023
Nadomešča:
SIST EN 16339:2013
Zunanji zrak - Metoda za določevanje 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: prEN 16339
ICS:
13.040.20 Kakovost okoljskega zraka Ambient atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2023
ICS 13.040.20 Will supersede EN 16339:2013
English Version
Ambient air - Method for the determination of the
concentration of nitrogen dioxide by diffusive sampling
Air ambiant - Méthode pour la détermination de la Außenluft - Bestimmung der Konzentration von
concentration du dioxyde d'azote au moyen Stickstoffdioxid mittels Passivsammler
d'échantillonneurs par diffusion
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 264.
If this draft becomes a European Standard, 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.
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Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
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© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16339:2023 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 and shelf-life of samplers . 10
4.2.4 Storage after sampling . 10
4.2.5 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 . 17
8.3 Use of replicates . 18
8.4 Exposure. 18
8.5 Co-location sites . 18
8.6 Auxiliary information . 18
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 . 38
Annex E (informative) Reagents and equipment . 48
Annex F (informative) Validation data of the use of protective devices . 51
Annex G (informative) Significant technical changes . 53
Bibliography . 54
European foreword
This document (prEN 16339:2023) has been prepared by Technical Committee CEN/TC 264 “Air
quality”, the secretariat of which is held by DIN.
This document is currently submitted to CEN Enquiry.
This document will supersede EN 16339:2013.
Introduction
EU Directive 2008/50/EC [1] stipulates that European Union Member States shall apply measurement
methods (fixed measurement, modelling, indicative measurement, objective estimation) and associated
Data Quality Objectives (DQO), depending on levels 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. Users may use any method that is the
equivalence of measurement, to be demonstrated in accordance with the Guide for the Demonstration of
Equivalence (GDE) of ambient air monitoring methods [3] where specific paragraphs to methods based
on diffusive sampling can be found.
Diffusive sampling is an attractive alternative to fixed monitoring using the reference methodology
described in EN 14211, for the measurement of NO .
because of:
— 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 an
instrument for the assessment of air quality, provided that they fulfil the specific DQO given in [1].
In order to use passive samplers as a substitute for fixed measurements, it is required to demonstrate
equivalence. Otherwise, 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
x
a NO equivalent) for the protection of vegetation and natural ecosystems [4] [5] [6].
A full demonstration of equivalence according to [3] has been performed by the North Rhein-Westphalia
state agency for nature, environment and consumer protection (LANUV) [7]. Some studies have
compared NO annual average concentrations measured by chemiluminescence and by diffusive
samplers [8], [9], [10] and [11]. These have shown the potential of diffusive sampling to meet the data
quality objective of 15 % expanded uncertainty for fixed measurements [1].
The methodology described in this document can be applied to obtain air quality information with a
relatively high spatial density that can be used to complement the appropriate siting of fixed monitoring
stations, or in the validation of dispersion models.
This document has been prepared based on the findings of reviews
...
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