BS EN 12341:2014 - Ambient air. Standard gravimetric measurement method for the determination of the PM<sub>10</sub> or PM<sub>2</sub><sub>,</sub><sub>5</sub> mass concentration of suspended particulate matter
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BS EN 12341:2014

Ambient air. Standard gravimetric measurement method for the determination of the PM10 or PM2,5 mass concentration of suspended particulate matter

Status : Current   Published : June 2014

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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.




Standard NumberBS EN 12341:2014
TitleAmbient air. Standard gravimetric measurement method for the determination of the PM10 or PM2,5 mass concentration of suspended particulate matter
StatusCurrent
Publication Date30 June 2014
Normative References(Required to achieve compliance to this standard)JCGM 100
Informative References(Provided for Information)EN 13274-7, 2008/50/EC, CEN/TR 16243, EN 1822-1, CEN/TR 16269, JCGM 200, 2004/107/EC, ISO/IEC 17025, EN 15549, EN ISO/IEC 17025, EN 14902, 89/654/EEC, CEN/TS 16450:2013, EN 14907:2005, EN 12341:1998
ReplacesBS EN 12341:1999, BS EN 14907:2005
International RelationshipsEN 12341:2014
Draft Superseded By12/30268424 DC
DescriptorsAir, Data handling, Test equipment, Bibliography, Field testing, Concentration, Measuring instruments, Design, Weight measurement, Performance, Sampling equipment, Sampling methods, Air pollution, Mathematical calculations, Flow rates, Testing conditions, Dimensions, Equivalence, Calibration, Filters, Quality, Particulate materials, Particulate air pollutants, Comparative tests
ICS13.040.20
Title in FrenchAir ambiant. Méthode normalisée de mesurage gravimétrique pour la détermination de la concentration massique MP10 ou MP2,5 de matière particulaire en suspension
Title in GermanAußenluft. Gravimetrisches Standardmessverfahren für die Bestimmung der PM10- oder PM2,5-Massenkonzentration des Schwebstaubes
CommitteeEH/2/3
ISBN978 0 580 78524 5
PublisherBSI
FormatA4
DeliveryYes
Pages58
File Size1.387 MB
Price£254.00


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