1、BSI Standards PublicationPD CEN/TR 13205-3:2014Workplace exposure Assessment of samplerperformance for measurementof airborne particleconcentrationsPart 3: Analysis of sampling efficiency dataPD CEN/TR 13205-3:2014 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation o
2、f CEN/TR 13205-3:2014. Together with BS EN 13205-1:2014, BS EN13205-2:2014, BS EN 13205-4:2014, BS EN 13205-5:2014 and BS EN13205-6:2014 it supersedes BS EN 13205:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/2/2, Work place atmospheres.A list
3、 of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimit
4、ed 2014ISBN 978 0 580 78060 8ICS 13.040.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 30 June 2014.Amendments issued since publicationDate Text affectedPD CE
5、N/TR 13205-3:2014TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 13205-3 June 2014 ICS 13.040.30 Supersedes EN 13205:2001English Version Workplace exposure - Assessment of sampler performance for measurement of airborne particle concentrations - Part 3: Analysis of sampling efficiency
6、data Exposition sur les lieux de travail - valuation des performances des instruments de mesurage des concentrations darosols - Partie 3: Analyse des donnes defficacit de prlvement Exposition am Arbeitsplatz - Beurteilung der Leistungsfhigkeit von Sammlern fr die Messung der Konzentration luftgetrag
7、ener Partikel - Teil 3: Analyse der 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,
8、 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 COMM
9、ITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 worldwide for CEN national Members. Ref. No. CEN/TR 13205-3:2014 EPD CEN/
10、TR 13205-3:2014CEN/TR 13205-3:2014 (E) 2 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 eff
11、iciency 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
12、 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
13、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 PD CEN/TR 13205-3:2014CEN/TR 13205-3:2014 (E) 3 Foreword This document (CEN/TR 13205-3:2014) has been prepared by Technical Committee CEN/TC
14、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 an
15、y 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
16、: 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 performa
17、nce test and sampler comparison carried out at workplaces; Part 6: Transport and handling tests. PD CEN/TR 13205-3:2014CEN/TR 13205-3:2014 (E) 4 Introduction EN 481 defines sampling conventions for the particle size fractions to be collected from workplace atmospheres in order to assess their impact
18、 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
19、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 inte
20、raction 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
21、 in EN 13205-2. The evaluation method described in this Technical Report shows how to estimate the candidate samplers sampling efficiency as a function of particle aerodynamic diameter based on the measurement of sampling efficiency values for individual sampler specimen, whether all aspirated parti
22、cles 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
23、 of error can be calculated from measurement data, for example, for individual sampler variability, estimation of sampled concentration and experimental errors. PD CEN/TR 13205-3:2014CEN/TR 13205-3:2014 (E) 5 1 Scope This Technical Report specifies evaluation methods for analysing the data obtained
24、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 normativel
25、y 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
26、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 determina
27、tion 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,
28、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 S
29、ymbols 4.1.1 Latin A DA,A, D( ) relative lognormal aerosol size distribution, with mass median aerodynamic diameter DAand geometric standard deviation A, 1/m NOTE The word “relative” means that the total amount of particles is unity -, i.e. A DA,A, D( )d D0=1. Apintegration of aerosol size distribut
30、ion A between two particle sizes, - (polygonal approximation method) At, pintegration of aerosol size distribution A between two particle sizes, calculated using set t of the simulated test particle sizes, - (polygonal approximation method) fronttoprightleft,ipripripripriprbbbbb coefficients in Form
31、ula (19) to estimate the test aerosol concentration at a 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-PD CEN/TR 13205-3:2014CEN/TR 13205-3:2014 (E) 6 edged probes, - qb regression
32、coefficient q for calibration of particle counter/sizer or similar, dimension depends on particle counter, (curve-fitting method) Cissampled relative aerosol concentration, calculated to be obtained when using the candidate sampler individual s, for aerosol size distribution A at influence variable
33、value i, - (curve-fitting method) Cis,tsampled relative aerosol concentration, calculated to be obtained when using the candidate sampler individual s, for aerosol size distribution A at influence variable value i, using simulated set t of test particle sizes, - (curve-fitting method) Ci,tmean sampl
34、ed relative aerosol concentration, calculated to be obtained when using the candidate sampler, for aerosol size distribution A at influence variable value i, using simulated set t of test particle sizes, - (polygonal approximation method) cRefis r correction factor for the measured efficiency values
35、 if the total airborne aerosol concentration varies between repeats, - (curve-fitting method) D aerodynamic diameter, m DAmass median aerodynamic diameter of a lognormal aerosol size distribution A, m DAamass median aerodynamic diameter a of a lognormal aerosol size distribution A, m Dcaerodynamic p
36、article size of calibration particle c (c=1 to NC), m (curve-fitting method) Dmaxdiameter of the end of the integration range of the sampled aerosol, m and H Dmindiameter of the beginning of the integration range of the sampled aerosol, m Dpaerodynamic diameter of test particle p (p=1 to NP), m Dt,
37、psimulated test particle size, m Duaerodynamic particle size of small particles u (u=1 to NU) for which the sampling efficiency is known to be e0, m (curve-fitting method) Eipexpectation value of the efficiency for test particle size p at influence variable value i, - (polygonal approximation method
38、) estEisinletfitted sampling efficiency curve (of the inlet stage) of the candidate sampler individual s at influence variable value i, - (curve-fitting method) estEispenfitted penetration curve (of the separation stage) of the candidate sampler individual s at influence variable value i, - (curve-f
39、itting method) estEistotfitted sampling efficiency curve (of the combined inlet and penetration stages) of the candidate sampler individual s at influence variable value i, - (curve-fitting method) estEis,tfitted sampling efficiency curve of the candidate sampler individual s at influence variable v
40、alue iusing simulated set t of NPparticle sizes, - (curve-fitting method) PD CEN/TR 13205-3:2014CEN/TR 13205-3:2014 (E) 7 eiprsandeipsrexperimentally determined efficiency value, with notation for polygonal approximation and curve-fitting methods, respectively. The subscripts are for influence varia
41、ble value i, particle size p (p=1 to NP), sampler individual s (s=1 to NS) and repeat r (r=1 to NR), - (notation for polygonal approximation and curve-fitting methods, respectively) e0known efficiency value for small particle sizes, - (curve-fitting method) FLoFistest variable for “lack of fit” for
42、the regression model isEfor the sampling efficiency of candidate sampler individual s and influence variable value i, - (curve-fitting method) FCandSamplVaritest variable for the check whether the individual sampler variability exceeds that of the uncertainty of the calculated concentrations, for in
43、fluence variable value i, - F0.95N,D( ) 95-percentile of F distribution with N and D degrees of freedom, - fk( ) functions (of ) used to build the regression model of the efficiency curve (index k=1 to NK), - (curve-fitting method) fkinlet( ) functions (of ) used to build the regression model of the
44、 efficiency curve of the inlet stage (index k=1 to NK), - (curve-fitting method) fkpen( ) functions (of ) used to build the regression model of the penetration curve of the separation stage (index k=1 to NK), - (curve-fitting method) GLoFisuncertainty inflation factor for the “lack of fit” uncertain
45、ty of the regression model for candidate sampler individual s and influence variable value i, - Gpeisuncertainty inflation factor for the “pure error” uncertainty of the regression model for candidate sampler individual s and influence variable value i, - hipleft, hipright, hiptop, hipfrontnearby th
46、in-walled sharp-edged probe concentrations measured in order to be able to estimate the test aerosol concentration at a specific sampler position, e.g. in a wind tunnel (to the left, right, above and in front of) the candidate sampler (see Formula (19), mg/m3 or 1/m3 depending on the application ipr
47、hesttotal airborne aerosol concentration estimated from the sharp-edged probe values; the subscripts are for influence variable value i (i=1 to NIV), particle size p (p=1 to NP) and repeat r (r=1 to NR) NCnumber of sizes for calibration particles (curve-fitting method) NCRnumber of regression coeffi
48、cients for calibration of particle counter/sizer or similar (curve-fitting method) NIVnumber of values for the other influence variables at which tests were performed NKnumber of regression coefficients in the model for the candidate sampler (curve-fitting method) NKinletnumber of regression coeffic
49、ients in the model (inlet stage) for the candidate sampler (curve-fitting method) NKpennumber of regression coefficients in the model of the penetration through the separation stage for the candidate sampler (curve-fitting method) PD CEN/TR 13205-3:2014CEN/TR 13205-3:2014 (E) 8 NPnumber of test particle sizes NRnumber of repeats per tested individual sampler NRefnumber of reference
