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BS EN 12341:2014

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Ambient air. Standard gravimetric measurement method for the determination of the PM10 or PM2$d,5 mass concentration of suspended particulate matter
Available format(s)

Hardcopy , PDF

Superseded date

08-10-2023

Language(s)

English

Published date

06-30-2014

This European Standard describes a standard method for determining the PM10 or PM2,5 mass concentrations of suspended particulate matter in ambient air by sampling the particulate matter on filters and weighing them by means of a balance.

Measurements are performed with samplers with inlet designs as specified in Annex A, operating at a nominal flow rate of 2,3 m3/h, over a nominal sampling period of 24 h. Measurement results are expressed in μg/m3, where the volume of air is the volume at ambient conditions near the inlet at the time of sampling.

The range of application of this European Standard is from approximately 1 μg/m3 (i.e. the limit of detection of the standard measurement method expressed as its uncertainty) up to 150 μg/m3 for PM10 and 120 μg/m3 for PM2,5.

NOTE 1 Although the European Standard is not validated for higher concentrations, its range of application could well be extended to ambient air concentrations up to circa 200 μg/m3 when using suitable filter materials (see 5.1.4).

This European Standard describes procedures and gives requirements for the use of so-called sequential samplers, equipped with a filter changer, suitable for extended stand-alone operation. Sequential samplers are commonly used throughout the European Union for the measurement of concentrations in ambient air of PM10 or PM2,5. However, this European Standard does not exclude the use of single-filter samplers.

This European Standard does not give procedures for the demonstration of equivalence of other sampler types, e.g. equipped with a different aerosol classifier and/or operating at different flow rates. Such procedures and requirements are given in detail in the Guide to the Demonstration of Equivalence of Ambient Air Monitoring Methods [11] and for automated continuous PM monitors (see CEN/TS 16450:2013).

The present European Standard represents an evolution of earlier European Standards (EN 12341:1998 and EN 14907:2005) through the development of the 2,3 m3/h sampler to include constraints on the filter temperature during and after sampling and the ability to monitor temperatures at critical points in the sampling system. It is recommended that when equipment is procured it complies fully with the present European Standard. However, older versions of these 2,3 m3/h samplers that do not employ sheath air cooling, the ability to cool filters after sampling, or the ability to monitor temperatures at critical points in the sampling system have a special status in terms of their use as reference samplers. Historical results obtained using these samplers will remain valid. These samplers can still be used for monitoring purposes and for equivalence trials, provided that a well justified additional allowance is made to their uncertainties (see Annex B).

In addition, three specific sampling systems – the “long nozzle?? 2,3 m3/h sampler and the 68 m3/h sampler for PM10 in EN 12341:1998, and the 30 m3/h PM2,5 inlet in EN 14907:2005 – also have a special status in terms of their use as reference samplers. Historical results obtained using these samplers will remain valid. These samplers can still be used for monitoring purposes and for equivalence trials, provided that a well-justified additional allowance is made to their uncertainties (see Annex B).

Other sampling systems, as described in Annex B of this European Standard, can be used provided that a well justified additional allowance is made to their uncertainties as derived from equivalence tests.

NOTE 2 By evaluating existing data it has been shown that these samplers give results for PM10 and PM2,5 that are equivalent to those obtained by application of this European Standard. Results are shown in Annex B.

This European Standard also provides guidance for the selection and testing of filters with the aim of reducing the measurement uncertainty of the results obtained when applying this European Standard.

Committee
EH/2/3
DevelopmentNote
Supersedes 96/520295 DC. (08/2005) Supersedes BS EN 14907 & 12/30268424 DC. (06/2014)
DocumentType
Standard
Pages
58
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
EN 12341:2014 Identical
NEN EN 12341 : 2014 Identical
UNE-EN 12341:2015 Identical
NF EN 12341 : 2014 Identical
DIN EN 12341:2014-08 Identical
NS EN 12341 : 2014 Identical
NBN EN 12341 : 2014 Identical
SN EN 12341:2014 Identical
I.S. EN 12341:2014 Identical
UNI EN 12341 : 2014 Identical
ONORM EN 12341 : 2014 Identical
DIN EN 12341:1999-03 Identical

ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
EN 13274-7:2008 Respiratory protective devices - Methods of test - Part 7: Determination of particle filter penetration
CEN/TR 16269:2011 Ambient air - Guide for the measurement of anions and cations in PM2,5
EN 14907:2005 Ambient air quality - Standard gravimetric measurement method for the determination of the PM2,5 mass fraction of suspended particulate matter
CEN/TR 16243:2011 Ambient air quality - Guide for the measurement of elemental carbon (EC) and organic carbon (OC) deposited on filters
EN 14902:2005/AC:2006 AMBIENT AIR QUALITY - STANDARD METHOD FOR THE MEASUREMENT OF PB, CD, AS AND NI IN THE PM10 FRACTION OF SUSPENDED PARTICULATE MATTER
ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
CEN/TS 16450:2013 Ambient air - Automated measuring systems for the measurement of the concentration of particulate matter (PM10; PM2,5)
EN 1822-1:2009 High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking
EN 15549:2008 Air quality - Standard method for the measurement of the concentration of benzo[a]pyrene in ambient air
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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