EN 14625:2005
(Main)Ambient air quality - Standard method for the measurement of the concentration of ozone by ultraviolet photometry
Ambient air quality - Standard method for the measurement of the concentration of ozone by ultraviolet photometry
This document specifies a continuous measurement method for the determination of the concentration of ozone present in ambient air based on the ultraviolet photometric measuring principle. This document describes the performance characteristics, and sets the relevant minimum criteria required to select an appropriate ultraviolet photometric ozone analyser by means of type approval tests. It also includes the evaluation of the suitability of an anayser for use in a specific fixed site so as to meet the Directives data quality requirements and requirements during sampling, calibration and quality assurance.
The method is applicable to the determination of the mass concentration of ozone present in ambient air in the range from 0 mg/m3 to 500 mg/m3. This concentration range represents the certification range for the type approval test.
NOTE 1 0 mg/m3 to 500 mg/m3 of O3 corresponds to 0 nmol/mol to 250 nmol/mol of O3.
The method covers the determination of ambient air concentrations of ozone in zones classified as rural areas, urban and urban-background areas.
NOTE 2 Other ranges may be used for measurement systems applied at rural locations monitoring Ecosystems.
The results are expressed in mg/m3 (at 20 °C and 101,3 kPa).
When the standard is used for other purposes than the EU-directive, the range and uncertainty requirements need not apply.
Luftqualität - Messverfahren zur Bestimmung der Konzentration von Ozon mit Ultraviolett-Photometrie
Dieses Dokument legt ein kontinuierliches Messverfahren zur Bestimmung der Konzentration von Ozon in Luft nach dem Ultraviolett-Photometrie-Messprinzip fest. Dieses Dokument gibt die Leistungskenngrößen an und legt die relevanten Mindestanforderungen für die Eignungsprüfung von Ultraviolett-Photometern fest. Es schließt auch die Bewertung der Eignung eines Messgeräts zur Anwendung an einer spezifischen Messstelle hinsichtlich der Anforderungen der EU-Richtlinien an die Datenqualität und hinsichtlich der Anforderungen für Probenahme, Kalibrierung und Qualitätssicherung ein.
Das Verfahren ist anwendbar zur Bestimmung der Massenkonzentration von Ozon in Luft im Bereich von 0 µg/m³ bis 500 µg/m³. Dieser Konzentrationsbereich entspricht dem Zertifizierungsbereich für die Eignungsprüfung.
ANMERKUNG 1 0 µg/m3 bis 500 µg/m3 O3 entspricht 0 nmol/mol bis 250 nmol/mol O3.
Das Verfahren umfasst die Bestimmung der Konzentration von Ozon in Gebieten, die als ländliche Gebiete, städtische Gebiete und Gebiete mit städtischem Hintergrund klassifiziert sind.
ANMERKUNG 2 Für Messsysteme an ländlichen Standorten zur Überwachung von Ökosystemen können kleinere Messbereiche verwendet werden.
Die Ergebnisse werden in µg/m³ (bei 293 K und 101,3 kPa) angegeben.
Wenn diese Norm für andere als in der EU-Richtlinie festgelegte Zwecke eingesetzt wird, brauchen die Anforderungen hinsichtlich Anwendungsbereich und Unsicherheit nicht zur Geltung kommen.
Qualité de l'air ambiant - Méthode normalisée pour le mesurage de la concentration en ozone par photométrie U.V.
Le présent document spécifie une méthode de mesurage en continu pour la détermination de la concentration en ozone de l'air ambiant. Cette méthode est basée sur le principe de mesure par photométrie U.V. Le présent document décrit les caractéristiques de performance et fixe les critères minimums requis pour sélectionner un analyseur par photométrie U.V. approprié à l'aide d'essais d'approbation de type. Il présente également l'évaluation de l'aptitude à l'emploi d'un analyseur sur un site fixe spécifique de manière à répondre aux exigences de qualité des données prescrites dans les Directives ainsi qu'aux exigences à observer au cours du prélèvement, de l'étalonnage et de l'assurance qualité.
La méthode s'applique à la détermination de la concentration massique en ozone présent dans l'air ambiant dans la plage allant de 0 mg/m3 à 500 mg/m3. Cette plage de concentration représente l'étendue de mesure certifiée pour l'essai d'approbation de type.
NOTE 1 0 µg/m3 à 500 mg/m3 d'O3 correspondent à 0 nmol/mol à 250 nmol/mol d'O3.
La méthode couvre la détermination des concentrations en ozone présent dans l'air ambiant dans les zones classées comme zones rurales, urbaines et périurbaines.
NOTE 2 D'autres plages peuvent être utilisées pour les systèmes de mesure appliqués aux zones rurales contrôlant des écosystèmes.
Les résultats sont exprimés en mg/m3 (à 20 °C et 101,3 kPa).
Lorsque la norme est utilisée à d'autres fins que la Directive UE, les exigences relatives à la plage et à l'incertitude peuvent ne pas être appliquées.
Kakovost zunanjega zraka – Standardna metoda za določanje koncentracije ozona z ultravijolično fotometrijo
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2005
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Ambient air quality - Standard method for the measurement of the concentration of
ozone by ultraviolet photometry
Luftqualität - Messverfahren zur Bestimmung der Konzentration von Ozon mit Ultraviolett
-Photometrie
Qualité de l'air ambiant - Méthode normalisée pour le mesurage de la concentration en
ozone par photométrie U.V.
Ta slovenski standard je istoveten z: EN 14625:2005
ICS:
13.040.20 Kakovost okoljskega zraka Ambient atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 14625
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2005
ICS 13.040.20
English version
Ambient air quality - Standard method for the measurement of
the concentration of ozone by ultraviolet photometry
Qualité de l'air ambiant - Méthode normalisée de mesurage Luftqualität - Messverfahren zur Bestimmung von Ozon in
de la concentration d'ozone par photométrie UV Luft mit dem UV-Verfahren
This European Standard was approved by CEN on 10 December 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14625:2005: E
worldwide for CEN national Members.
Contents
Page
Foreword.4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Symbols and abbreviated terms .9
5 Principle.12
5.1 General.12
5.2 Measuring principle.12
5.3 Type approval test .13
6 Sampling equipment .13
6.1 General.13
6.2 Sampling location.13
6.3 Sampling inlet and sampling line.14
6.4 Particulate filter.14
6.5 Control and regulation of sample flow rate .15
6.6 Sampling pump for the manifold.15
7 Analyser equipment .15
7.1 General.15
7.2 Interferences .15
7.3 Ultraviolet absorption cell.15
7.4 Ultraviolet source lamp .16
7.5 UV detector.16
7.6 Ozone-specific scrubber.16
7.7 Switching valve.16
7.8 Temperature indicator.16
7.9 Pressure indicator .16
7.10 Flow rate indicator.17
7.11 Sampling pump for the analyser.17
7.12 Residence time in the sampling system and inside the analyser .17
7.13 Internal ozone span source .17
8 Type approval of ultraviolet photometric ozone analysers.17
8.1 General.17
8.2 Relevant performance characteristics and performance criteria .17
8.3 Design changes .20
8.4 Procedures for determination of the performance characteristics during the laboratory test .20
8.5 Determination of the performance characteristics during the field test.30
8.6 Expanded uncertainty calculation for type approval.34
9 Field operation and ongoing quality control .34
9.1 General.34
9.2 Suitability evaluation.34
9.3 Initial installation.35
9.4 Ongoing quality control .36
9.5 Calibration of the analyser.37
9.6 Checks .38
9.7 Maintenance .41
9.8 Data handling and data reports.41
10 Expression of results .42
11 Test reports and documentation.42
11.1 Type approval tests.42
11.2 Field operation .42
Annex A (normative) Correction for ambient nitric oxide .44
Annex B (normative) Calculation of lack of fit.45
Annex C (informative) Sampling equipment.47
Annex D (informative) Sampling on micro scale.49
Annex E (informative) Ultra violet photometric analyser .50
Annex F (informative) Manifold testing equipment.51
Annex G (normative) Type approval.52
Annex H (normative) Calculation of uncertainty in field operation at the hourly alert threshold value.74
Bibliography.86
Foreword
This document (EN 14625:2005) 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 September 2005, and conflicting national standards shall be withdrawn at the
latest by September 2005.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
1 Scope
This document specifies a continuous measurement method for the determination of the concentration of ozone
present in ambient air based on the ultraviolet photometric measuring principle. This document describes the
performance characteristics, and sets the relevant minimum criteria required to select an appropriate ultraviolet
photometric ozone analyser by means of type approval tests. It also includes the evaluation of the suitability of an
anayser for use in a specific fixed site so as to meet the Directives data quality requirements and requirements
during sampling, calibration and quality assurance.
The method is applicable to the determination of the mass concentration of ozone present in ambient air in the
3 3
range from 0 µg/m to 500 µg/m . This concentration range represents the certification range for the type approval
test.
3 3
NOTE 1 0 µg/m to 500 µg/m of O corresponds to 0 nmol/mol to 250 nmol/mol of O .
3 3
The method covers the determination of ambient air concentrations of ozone in zones classified as rural areas,
urban and urban-background areas.
NOTE 2 Other ranges may be used for measurement systems applied at rural locations monitoring Ecosystems.
The results are expressed in µg/m (at 20 °C and 101,3 kPa).
When the standard is used for other purposes than the EU-directive, the range and uncertainty requirements need
not apply.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references,
only the edition cited applies. For undated references, the latest edition of the referenced document (including any
amendments) applies.
ENV 13005, Guide to the expression of uncertainty in measurement
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 13964:1998, Air quality — Determination of
...
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