EN ISO 28439:2011

Workplace atmospheres - Characterization of ultrafine aerosols/nanoaerosols - Determination of the size distribution and number concentration using differential electrical mobility analysing systems (ISO 28439:2011)

ISO 28439:2011 provides guidelines for the determination of the number concentration and size distribution of ultrafine aerosols and nanoaerosols by use of mobility particle sizers (also called differential mobility analysers). Only the particle fraction of the aerosol is considered. For ultrafine aerosols and nanoaerosols, exposure metrics such as the number and surface area concentration are important.
ISO 28439:2011 also gives guidelines for the determination of workplace exposure to ultrafine aerosols and nanoaerosols.
Specifically, the differential mobility analysing system (DMAS), now available from several vendors, is discussed. Principles of operation, problems of sampling in the workplace environment, calibration, equipment maintenance, measurement uncertainty, and reporting of measurement results are covered.
Potential problems and limitations are described, which need to be addressed when limit values are fixed and compliance measurements carried out.

Arbeitsplatzatmosphäre - Charakterisierung ultrafeiner Aerosole/Nanoaerosole - Bestimmung der Größenverteilung und Anzahlkonzentration mit differentiellen elektrischen Mobilitätsanalysesystemen (ISO 28439:2011)

Diese Internationale Norm gibt einen Leitfaden zur Bestimmung der Anzahlkonzentration und
Größenverteilung ultrafeiner Aerosole und Nanoaerosole mit Mobilitäts-Partikelsichtern (auch Differential-
Mobilitätsanalyser genannt), wobei nur die Partikelfraktion des Aerosols betrachtet wird. Bei ultrafeinen
Aerosolen und Nanoaerosolen sind Expositionsmaße wie die Anzahl- und Oberflächenkonzentration von
Bedeutung.
Diese Internationale Norm stellt zudem Leitlinien zur Bestimmung der Exposition gegenüber ultrafeinen
Aerosolen und Nanoaerosolen am Arbeitsplatz auf.
Insbesondere wird das differentielle elektrische Mobilitätsanalysesystem (DMAS) erörtert, dass mittlerweile
von mehreren Anbietern zur Verfügung gestellt wird. Behandelt werden die Grundsätze der Handhabung,
Probleme bei der Probenahme in der Arbeitsplatzumgebung, die Kalibrierung, die Wartung der Ausrüstung,
die Messunsicherheit sowie die Angabe der Messergebnisse.
Mögliche Probleme und Einschränkungen werden beschrieben, welche erfordern, sich damit auseinander zu
setzen, falls Grenzwerte festgelegt und Messungen auf Übereinstimmung durchgeführt werden.

Air des lieux de travail - Caractérisation des aérosols ultrafins/nanoaérosols - Détermination de la distribution granulométrique et de la concentration en nombre à l'aide de systèmes d'analyse différentielle de mobilité électrique (ISO 28439:2011)

L'ISO 28439:2011 fournit des lignes directrices permettant de déterminer la concentration en nombre et la distribution granulométrique d'aérosols ultrafins et de nanoaérosols au moyen de spectromètres de mobilité électrique (également appelés analyseurs différentiels de mobilité). Seule la fraction de particules de l'aérosol est considérée. Pour des aérosols ultrafins et des nanoaérosols, des métriques d'exposition telles que la concentration en nombre et en surface sont très importantes.
L'ISO 28439:2011 fournit également des lignes directrices pour la détermination de l'exposition aux aérosols ultrafins et aux nanoaérosols sur le lieu de travail.
En particulier, le système d'analyse différentielle de mobilité (DMAS), désormais disponible auprès de plusieurs distributeurs, est présenté. Les principes de fonctionnement, les problèmes d'échantillonnage dans l'environnement du lieu de travail, l'étalonnage, l'entretien du matériel, l'incertitude de mesure, et le rapport des résultats de mesurage sont couverts.
Des problèmes potentiels et des limitations sont décrits, qui nécessitent d'être abordés quand des valeurs limites sont fixées et que des mesurages de conformité sont effectués.

Zrak na delovnem mestu - Karakterizacija ultrafinih aerosolov/nanoaerosolov - Določevanje porazdelitve velikosti in številčne koncentracije z uporabo analiznih sistemov za diferenčno mobilnost (ISO 28439:2011)

Ta dokument opredeljuje določevanje porazdelitve velikosti in številčne koncentracije ultrafinih aerosolov in nanoaerosolov z uporabo mobilnostnih merilnikov velikosti delcev (imenovanih tudi sistemi za diferenčno mobilnost). Podaja vodilo za vzorčenje za poklicne higienike in raziskovalce za učinkovito karakterizacijo in nadzor izpostavljenosti ultrafinim aerosolom in nanoaerosolom na delovnem mestu.

General Information

• Status: Published
• Publication Date: 31-Mar-2011
• Withdrawal Date: 30-Oct-2011
• ICS: 13.040.30 - Workplace atmospheres
• Technical Committee: CEN/TC 137 - Assessment of workplace exposure
• Drafting Committee: CEN/TC 137/WG 3 - Particulate matter
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Apr-2011
• Due Date: 09-Apr-2011
• Completion Date: 01-Apr-2011
• Ref Project: SIST EN ISO 28439:2011 - Workplace atmospheres - Characterization of ultrafine aerosols/nanoaerosols - Determination of the size distribution and number concentration using differential electrical mobility analysing systems (ISO 28439:2011)

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2011
=UDNQDGHORYQHPPHVWX.DUDNWHUL]DFLMDXOWUDILQLKDHURVRORYQDQRDHURVRORY
'RORþHYDQMHSRUD]GHOLWYHYHOLNRVWLLQãWHYLOþQHNRQFHQWUDFLMH]XSRUDERDQDOL]QLK
VLVWHPRY]DGLIHUHQþQRPRELOQRVW,62
Workplace atmospheres - Characterization of ultrafine aerosols/nanoaerosols -
Determination of the size distribution and number concentration using differential
electrical mobility analysing systems (ISO 28439:2011)
Arbeitsplatzatmosphäre - Charakterisierung ultrafeiner Aerosole/Nanoaerosole -
Bestimmung der Größenverteilung und Anzahlkonzentration mit differentiellen
elektrischen Mobilitätsanalysesystemen (ISO 28439:2011)
Air des lieux de travail - Caractérisation des aérosols ultrafins/nanoaérosols -
Détermination de la distribution granulométrique et de la concentration en nombre à
l'aide de systèmes d'analyse différentielle de mobilité électrique (ISO 28439:2011)
Ta slovenski standard je istoveten z: EN ISO 28439:2011
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.

EUROPEAN STANDARD
EN ISO 28439
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
ICS 13.040.30
English Version
Workplace atmospheres - Characterization of ultrafine
aerosols/nanoaerosols - Determination of the size distribution
and number concentration using differential electrical mobility
analysing systems (ISO 28439:2011)
Air des lieux de travail - Caractérisation des aérosols Arbeitsplatzatmosphäre - Charakterisierung ultrafeiner
ultrafins/nanoaérosols - Détermination de la distribution
Aerosole/Nanoaerosole - Bestimmung der
granulométrique et de la concentration en nombre à l'aide Größenverteilung und Anzahlkonzentration mit
de systèmes d'analyse différentielle de mobilité électrique differentiellen elektrischen Mobilitätsanalysesystemen (ISO
(ISO 28439:2011) 28439:2011)
This European Standard was approved by CEN on 10 March 2011.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 28439:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 28439:2011) 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, in
collaboration with Technical Committee ISO/TC 146 "Air quality".
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 October 2011, and conflicting national standards shall be withdrawn at
the latest by October 2011.
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.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
INTERNATIONAL ISO
STANDARD 28439
First edition
2011-04-01
Workplace atmospheres —
Characterization of ultrafine aerosols/
nanoaerosols — Determination of the size
distribution and number concentration
using differential electrical mobility
analysing systems
Air des lieux de travail — Caractérisation des aérosols ultrafins/
nanoaérosols — Détermination de la distribution granulométrique et de
la concentration en nombre à l'aide de systèmes d'analyse différentielle
de mobilité électrique
Reference number
ISO 28439:2011(E)
©
ISO 2011
ISO 28439:2011(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved

ISO 28439:2011(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Symbols and abbreviated terms .2
4.1 Symbols.2
4.2 Abbreviated terms.3
5 Principle .3
6 Equipment .4
6.1 General .4
6.2 Sampling line .4
6.3 Pre-separator .5
6.4 Particle charge conditioner .5
6.5 DEMC .5
6.6 Aerosol particle detector .5
7 Measurement strategy .6
8 Measuring procedure.6
8.1 Preparation.6
8.2 Sampling .7
9 Presentation and evaluation of data.7
10 Check of DMAS performance.8
10.1 Check on particle classification.8
10.2 Check on particle number-counting efficiency .8
11 Problems and errors .8
11.1 CPC (CNC) counting efficiency.8
11.2 Particles with multiple charges.9
11.3 Sampling losses .9
11.4 Uncertainties.10
11.5 Overloading.11
11.6 Sampling of fibres .11
11.7 Humidity .11
11.8 Maintenance.11
Annex A (informative) Methods for determining exposure .12
Annex B (informative) List of manufacturers (non-comprehensive).13
Bibliography.14

ISO 28439:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 28439 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 137, Assessment of workplace exposure to chemical and biological agents, in collaboration with
Technical Committee ISO/TC 146, Air quality, Subcommittee SC 2, Workplace atmospheres, in accordance
with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
iv © ISO 2011 – All right
...