CEN/TR 13205-3:2014
(Main)Workplace exposure - Assessment of sampler performance for measurement of airborne particle concentrations - Part 3: Analysis of sampling efficiency data
Workplace exposure - Assessment of sampler performance for measurement of airborne particle concentrations - Part 3: Analysis of sampling efficiency data
This Technical Report specifies evaluation methods for analysing the data obtained from a type A test of aerosol samplers under prescribed laboratory conditions as specified in prEN 13205-2:2012.
The methods can be applied to all samplers used for the health-related sampling of particles in workplace air.
Exposition am Arbeitsplatz - Beurteilung der Leistungsfähigkeit von Sammlern für die Messung der Konzentration luftgetragener Partikel - Teil 3: Analyse der Daten zum Probenahmewirkungsgrad
Exposition sur les lieux de travail - Évaluation des performances des instruments de mesurage des concentrations d'aérosols - Partie 3: Analyse des données d'efficacité de prélèvement
Le présent rapport technique spécifie des méthodes d'évaluation pour l'analyse des données obtenues à partir d'un essai type A pour des dispositifs de prélèvement d'aérosols dans des conditions de laboratoire prescrites, telles que spécifiées dans la prEN 13205-2:2012.
Ces méthodes peuvent être appliquées à tous les dispositifs de prélèvement utilisés pour le prélèvement, à des fins sanitaires, des particules présentes sur les lieux de travail.
Izpostavljenost na delovnem mestu - Ocenjevanje lastnosti merilnikov za merjenje koncentracij lebdečih delcev - 3. del: Analiza podatkov o učinkovitosti vzorčenja
CEN/TR 13205-3 določa metode ocenjevanja za analizo podatkov, pridobljenih pri preskusu tipa A za merilnike aerosolov pod laboratorijskimi pogoji, določenimi v standardu EN 13205-2. Metode veljajo za vse merilnike, ki se uporabljajo za vzorčenje delcev v zraku, ki vplivajo na zdravje na delovnem mestu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2014
1DGRPHãþD
SIST EN 13205:2002
,]SRVWDYOMHQRVWQDGHORYQHPPHVWX2FHQMHYDQMHODVWQRVWLPHULOQLNRY]DPHUMHQMH
NRQFHQWUDFLMOHEGHþLKGHOFHYGHO $QDOL]DSRGDWNRYRXþLQNRYLWRVWLY]RUþHQMD
Workplace exposure - Assessment of sampler performance for measurement of airborne
particle concentrations - Part 3: Analysis of sampling efficiency data
Exposition am Arbeitsplatz - Bewertung der Leistungsfähigkeit von Sammlern für die
Messung der Konzentration luftgetragener Partikel - Teil 3: Analyse der Daten zum
Probenahmewirkungsgrad
Exposition sur les lieux de travail - Évaluation des performances des instruments de
mesurage des concentrations d'aérosols - Partie 3: Analyse des données d'efficacité de
prélèvement
Ta slovenski standard je istoveten z: CEN/TR 13205-3:2014
ICS:
13.040.30 Kakovost zraka na delovnem Workplace atmospheres
mestu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL REPORT
CEN/TR 13205-3
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
June 2014
ICS 13.040.30 Supersedes EN 13205:2001
English Version
Workplace exposure - Assessment of sampler performance for
measurement of airborne particle concentrations - Part 3:
Analysis of sampling efficiency data
Exposition sur les lieux de travail - Évaluation des Exposition am Arbeitsplatz - Beurteilung der
performances des instruments de mesurage des Leistungsfähigkeit von Sammlern für die Messung der
concentrations d'aérosols - Partie 3: Analyse des données Konzentration luftgetragener Partikel - Teil 3: Analyse der
d'efficacité de prélèvement Daten zum Probenahmewirkungsgrad
This Technical Report was approved by CEN on 14 January 2013. It has been drawn up by the Technical Committee CEN/TC 137.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 13205-3:2014 E
worldwide for CEN national Members.
Contents Page
Foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviations . 5
4.1 Symbols . 5
4.1.1 Latin . 5
4.1.2 Greek . 10
4.2 Enumerating subscripts . 11
4.3 Abbreviations . 12
5 Analysis of sampling efficiency data from a performance test according EN 13205-2. 12
5.1 General . 12
5.2 Presumption of exactly balanced data . 13
5.3 Examples of balanced experimental designs . 13
5.4 Analysis of efficiency data based on monodisperse test aerosols using the polygonal
approximation method . 14
5.4.1 Statistical model for the efficiency values . 14
5.4.2 Estimation of mean sampled concentration . 15
5.4.3 Estimation of uncertainty (of measurement) components . 17
5.5 Analysis of efficiency data based on monodisperse or polydisperse test aerosols using
the curve-fitting method . 27
5.5.1 Statistical model of the sampling efficiency data . 27
5.5.2 Estimation of mean sampled concentration . 28
5.5.3 Estimation of uncertainty (of measurement) components . 30
Bibliography . 46
Foreword
This document (CEN/TR 13205-3:2014) has been prepared by Technical Committee CEN/TC 137
“Assessment of workplace exposure to chemical and biological agents”, the secretariat of which is held by
DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document together with EN 13205-1, EN 13205-2, EN 13205-4, EN 13205-5 and EN 13205-6
supersedes EN 13205:2001.
EN 13205, Workplace exposure — Assessment of sampler performance for measurement of airborne particle
concentrations, consists of the following parts:
— Part 1: General requirements;
— Part 2: Laboratory performance test based on determination of sampling efficiency;
— Part 3: Analysis of sampling efficiency data [Technical Report] (the present document);
— Part 4: Laboratory performance test based on comparison of concentrations;
— Part 5: Aerosol sampler performance test and sampler comparison carried out at workplaces;
— Part 6: Transport and handling tests.
Introduction
EN 481 defines sampling conventions for the particle size fractions to be collected from workplace
atmospheres in order to assess their impact on human health. Conventions are defined for the inhalable,
thoracic and respirable aerosol fractions. These conventions represent target specifications for aerosol
samplers, giving the ideal sampling efficiency as a function of particle aerodynamic diameter.
In general, the sampling efficiency of real aerosol samplers will deviate from the target specification, and the
aerosol mass collected will therefore differ from that which an ideal sampler would collect. In addition, the
behaviour of real samplers is influenced by many factors such as external wind speed. In many cases there is
an interaction between the influence factors and fraction of the airborne particle size distribution of the
environment in which the sampler is used.
This Technical Report presents how data obtained in a type A test (see EN 13205-2) can be analysed in order
to calculate the uncertainty components specified in EN 13205-2.
The evaluation method described in this Technical Report shows how to estimate the candidate sampler’s
sampling efficiency as a function of particle aerodynamic diameter based on the measurement of sampling
efficiency values for individual sampler specimen, whether all aspirated particles are part of the sample (as for
most inhalable samplers) or if a particle size-dependent penetration occurs between the inlet and the
collection substrate (as for thoracic and respirable samplers).
The document shows how various sub-components of sampling errors due non-random and random sources
of error can be calculated from measurement data, for example, for individual sampler variability, estimation of
sampled concentration and experimental errors.
1 Scope
This Technical Report specifies evaluation methods for analysing the data obtained from a type A test of
aerosol samplers under prescribed laboratory conditions as specified in EN 13205-2.
The methods can be applied to all samplers used for the health-related sampling of particles in workplace air.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 1540, Workplace exposure — Terminology
EN 13205-1:2014, Workplace exposure — Assessment of sampler performance for measurement of airborne
particle concentrations — Part 1: General requirements
EN 13205-2:2014, Workplace exposure — Assessment of sampler performance for measurement of airborne
particle concentrations — Part 2: Laboratory performance test based on determination of sampling efficiency
3 Terms and definitions
For the purpose of this document, the term and definitions given in EN 1540, EN 13205-1 and EN 13205-2
apply.
NOTE With regard to EN 1540, in particular, the following terms are used in this document: total airborne particles,
respirable fraction, sampling efficiency, static sampler, thoracic fraction, measuring procedure, non-random uncertainty,
random uncertainty, expanded uncertainty, standard uncertainty, combined standard uncertainty, uncertainty (of
measurement), coverage factor, precision and analysis.
4 Symbols and abbreviations
4.1 Symbols
4.1.1 Latin
relative lognormal aerosol size distribution, with mass median aerodynamic
A D ,σ , D
( )
A A
diameter and geometric standard deviation , [1/µm]
D σ
A A
∞
NOTE The word “relative” means that the total amount of particles is unity [-], i.e. A D ,σ , D d D= 1.
( )
A A
∫
integration of aerosol size distribution A between two particle sizes, [-] –
A
p
(polygonal approximation method)
integration of aerosol size distribution A between two particle sizes, calculated
A
t, p
using set t of the simulated test particle sizes, [-] – (polygonal approximation
method)
left right top front coefficients in Formula (19) to estimate the test aerosol concentration at a
b ,b ,b ,b ,b
ipr ipr ipr
ipr ipr
specific sampler position e.g. in a wind tunnel based on nearby concentrations (to
the left, right, above and in front of) the sampler measured by thin-walled sharp-
edged probes, [-]
regression coefficient q for calibration of particle counter/sizer or similar,
b
q
[dimension depends on particle counter], (curve-fitting method)
sampled relative aerosol concentration, calculated to be obtained when using the
C
is
candidate sampler individual s, for aerosol size distribution A at influence variable
value , [-] – (curve-fitting method)
ς
i
sampled relative aerosol concentration, calculated to be obtained when using the
C
is,t
candidate sampler individual s, for aerosol size distribution A at influence variable
value , using simulated set t of test particle sizes, [-] – (curve-fitting method)
ς
i
mean sampled relative aerosol concentration, calculated to be obtained when
C
i,t
using the candidate sampler, for aerosol size distribution A at influence variable
value , using simulated set t of test particle sizes, [-] – (polygonal
ς
i
approximation method)
correction factor for the measured efficiency values if the total airborne aerosol
c
Ref
is[ r ]
concentration varies between repeats, [-] – (curve-fitting method)
aerodynamic diameter, [µm]
D
mass median aerodynamic diameter of a lognormal aerosol size distribution A,
D
A
[µm]
mass median aerodynamic diameter a of a lognormal aerosol size distribution A,
D
A
a
[µm]
D
aerodynamic particle size of calibration particle c (c=1 to ), [µm] – (curve-
c N
C
fitting method)
diameter of the end of the integration range of the sampled aerosol, [µm] –and H
D
max
diameter of the beginning of the integration range of the sampled aerosol, [µm]
D
min
D
aerodynamic diameter of test particle p (p=1 to ), [µm]
N
p
P
simulated test particle size, [µm]
D
t, p
D
aerodynamic particle size of small particles u (u=1 to ) for which the sampling
N
u
U
efficiency is known to be , [µm]– (curve-fitting method)
e
expectation value of the efficiency for test particle size p at influence variable
E
ip
value , [-] – (polygonal approximation method)
ς
i
est inlet
fitted sampling efficiency curve (of the inlet stage) of the candidate sampler
E
is
individual s at influence variable value , [-] – (curve-fitting method)
ς
i
est pen
fitted penetrat
...
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