Workplace exposure - Measurement of dustiness of bulk materials that contain or release respirable NOAA and other respirable particles - Part 1: Requirements and choice of test methods

This European Standard provides the methodology for measuring and characterizing the dustiness of a bulk material that contains or releases nano-objects or submicrometer particles. In addition, it specifies the environmental conditions, the sample handling procedure and the method of calculating and presenting the results. Guidance is given on the choice of method to be used.
The methodology described in this European Standard enables
a)   the quantification of dustiness in terms of health-related index mass fractions,
b)   the quantification of dustiness in terms of an index number and an emission rate, and
c)   the characterization of the aerosol from its particle size distribution and the morphology and chemical composition of its particles.
NOTE 1   Currently, no number-based classification scheme in terms of particle number has been established for particle dustiness release. Eventually, when a large enough number of measurement data has been obtained, the intention is to revise this European Standard and to introduce a number-based classification scheme.
This European Standard is applicable to all bulk materials, including powders, granules or pellets, containing or releasing nano-objects or submicrometer particles.
NOTE 2   The vortex shaker method specified in part 5 of this European Standard has not yet been evaluated for pellets and granules.
NOTE 3   The rotating drum and continuous drop methods have not yet been evaluated for nanofibres and nanoplates.
This European Standard does not provide methods for assessing the release of particles during handling or mechanical reduction of machining (e.g. crushing, cutting, sanding, sawing) of solid nanomaterials (e.g. nanocomposites).

Exposition am Arbeitsplatz - Messung des Staubungsverhaltens von Schüttgütern, die Nanoobjekte oder Submikrometerpartikel enthalten oder freisetzen - Teil 1: Anforderungen und Auswahl des Prüfverfahrens

Diese Europäische Norm bietet eine Methodik für die Messung und Charakterisierung des Staubungs-verhaltens von Schüttgut, das Nanoobjekte oder Partikel im Submikrometerbereich enthält oder freisetzt. Darüber hinaus legt die Norm die Umgebungsbedingungen, das Verfahren zur Handhabung der Proben und das Verfahren zur Berechnung und Darstellung der Ergebnisse fest. Des Weiteren enthält sie eine Anleitung für die Auswahl des anzuwendenden Verfahrens.
Die in dieser Europäischen Norm festgelegte Methodik ermöglicht
a)   die Quantifizierung des Staubungsverhaltens im Hinblick auf gesundheitsrelevante Indexmassenanteile,
b)   die Quantifizierung des Staubungsverhaltens im Hinblick auf eine Indexzahl und eine Emissionsrate und
c)   die Charakterisierung des Aerosols auf der Grundlage seiner Partikelgrößenverteilung und der Morphologie und chemischen Zusammensetzung seiner Partikel.
ANMERKUNG 1   Bisher wurde noch kein zahlenbasiertes Klassifizierungsschema im Hinblick auf die Partikelzahl für die Freisetzung von Partikelstaub entwickelt. Schließlich, wenn eine ausreichend große Anzahl an Messdaten vorliegt, ist beabsichtigt, diese Europäische Norm zu revidieren und ein zahlenbasiertes Klassifizierungsschema einzuführen.
Diese Europäische Norm gilt für alle Schüttgüter einschließlich Pulver, Granulaten oder Pellets, die Nanoobjekte oder Partikel im Submikrometerbereich enthalten oder freisetzen.
ANMERKUNG 2   Das in Teil 5 dieser Europäischen Norm festgelegte Vortex-Schüttlerverfahren wurde noch nicht für Pellets und Granulate beurteilt.
ANMERKUNG 3   Die Verfahren mit rotierender Trommel und kontinuierlichem Fall wurden noch nicht für Nanofasern und Nanoplättchen beurteilt.
Diese Europäische Norm liefert keine Verfahren für die Beurteilung der Freisetzung von Partikeln während der Handhabung oder mechanischen Reduzierung fester Nanomaterialien (z. B. Nanoverbundstoffe) durch maschinelle Bearbeitung (z. B. zerkleinern, schneiden, schleifen, sägen).

Exposition sur les lieux de travail - Mesurage du pouvoir de resuspension des matériaux en vrac contenant ou émettant des nano-objets et leurs agrégats et agglomérats (NOAA) ou autres particules en fraction alvéolaire - Partie 1: Exigences et choix des méthodes d'essai

Le présent document décrit la méthodologie pour le mesurage et la caractérisation du pouvoir de resuspension d’un matériau en vrac contenant ou émettant des NOAA et autres particules en fraction alvéolaire. Il spécifie également les conditions ambiantes, le mode opératoire de conditionnement des échantillons ainsi que la méthode de calcul et d’expression des résultats. Des recommandations sont données concernant le choix de la méthode à utiliser.
La méthodologie décrite dans le présent document permet :
a)   la quantification du pouvoir de resuspension en termes de fractions massiques de poussières liées à la santé ;
b)   la quantification du pouvoir de resuspension en termes d’indice du pouvoir de resuspension en nombre et de taux d’émission en nombre ;
c)   la caractérisation de l’aérosol à partir de sa distribution granulométrique, ainsi que de sa morphologie et de la composition chimique de ses particules.
NOTE 1   Aucun schéma de classification du pouvoir de resuspension en termes d’indice en nombre et de taux d’émission en nombre n’a encore été établi. Dès lors que des données de mesure seront disponibles en assez grand nombre, il est prévu de réviser le présent document et d’introduire un schéma de classification basé sur le nombre.
Le présent document est applicable à tous les matériaux en vrac, y compris des granules, des poudres ou des pastilles contenant ou émettant des NOAA et autres particules en fraction alvéolaire.
NOTE 2   La méthode de l’agitateur vortex spécifiée dans la Partie 5 de la présente série de normes n’a pas encore été évaluée pour les pastilles et les granules.
NOTE 3   La méthode du tambour rotatif et la méthode de la chute continue n’ont pas été évaluées pour les nanofibres et les nanofeuillets.
Le présent document ne spécifie pas de méthode pour l’évaluation de la libération de particules lors de la manipulation ou de la réduction mécanique par transformation (par exemple broyage, coupe, sablage, sciage) de nanocomposites.

Izpostavljenost na delovnem mestu - Meritve prašnosti razsutih materialov, ki vsebujejo ali sproščajo respirabilne nanopredmete ter njihove agregate in aglomerate (NOAA) in druge respirabilne delce - 1. del: Zahteve in izbira preskusnih metod

Ta evropski standard določa metodologijo za merjenje in opredelitev prašnosti razsutega materiala, ki vsebuje ali sprošča nanopredmete ali submikrometrske delce. Poleg tega navaja okoljske pogoje, postopek za ravnanje z vzorci ter metodo izračuna in predstavitve rezultatov. Smernice so podane v zvezi z izbiro uporabljene metode.
Metodologija, ki je opisana v tem evropskem standardu, omogoča:
a)   kvantifikacijo prašnosti v smislu z zdravjem povezanih indeksnih masnih delcev,
b)   kvantifikacijo prašnosti v smislu indeksnega števila in stopnje emisij ter
c)   karakterizacijo aerosola na podlagi porazdelitve velikosti delcev ter morfologije in kemijske sestave njegovih delcev.
OPOMBA 1:   Za sproščanje prašnosti delcev v smislu števila delcev trenutno še ni vzpostavljena nobena klasifikacijska shema na podlagi števil. Ko bo sčasoma pridobljenih dovolj merilnih podatkov, je predvidena revizija tega evropskega standarda in uvedba klasifikacijske sheme na podlagi števil.
Ta evropski standard se uporablja za vse razsute materiale, vključno s praški, granulami in peleti, ki vsebujejo ali sproščajo nanopredmete ali submikrometrske delce.
OPOMBA 2:   Metoda s krožnim mešalnikom, ki je navedena v 5. delu tega evropskega standarda, še ni ocenjena za pelete in granule.
OPOMBA 3:   Metodi z vrtečim bobnom in trajnim padanjem še nista ocenjeni za nanovlakna in nanoplošče.
Ta evropski standard ne določa metod za ocenjevanje sproščanja delcev med ravnanjem s trdnimi nanomateriali (npr. nanokompoziti) ali njihovim mehanskim zmanjševanjem med strojno obdelavo (npr. drobljenje, rezanje, brušenje, žaganje).

General Information

Status
Published
Public Enquiry End Date
04-Mar-2018
Publication Date
25-Jun-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
13-Jun-2019
Due Date
18-Aug-2019
Completion Date
26-Jun-2019

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SLOVENSKI STANDARD
SIST EN 17199-1:2019
01-september-2019
Izpostavljenost na delovnem mestu - Meritve prašnosti razsutih materialov, ki
vsebujejo ali sproščajo respirabilne nanopredmete ter njihove agregate in
aglomerate (NOAA) in druge respirabilne delce - 1. del: Zahteve in izbira
preskusnih metod
Workplace exposure - Measurement of dustiness of bulk materials that contain or

release respirable NOAA and other respirable particles - Part 1: Requirements and

choice of test methods

Exposition am Arbeitsplatz - Messung des Staubungsverhaltens von Schüttgütern, die

Nanoobjekte oder Submikrometerpartikel enthalten oder freisetzen - Teil 1:
Anforderungen und Auswahl des Prüfverfahrens

Exposition sur les lieux de travail - Mesurage du pouvoir de resuspension des matériaux

en vrac contenant ou émettant des nano-objets et leurs agrégats et agglomérats (NOAA)

ou autres particules en fraction alvéolaire - Partie 1: Exigences et choix des méthodes

d'essai
Ta slovenski standard je istoveten z: EN 17199-1:2019
ICS:
13.040.30 Kakovost zraka na delovnem Workplace atmospheres
mestu
SIST EN 17199-1:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 17199-1:2019
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SIST EN 17199-1:2019
EN 17199-1
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2019
EUROPÄISCHE NORM
ICS 13.040.30
English Version
Workplace exposure - Measurement of dustiness of bulk
materials that contain or release respirable NOAA and
other respirable particles - Part 1: Requirements and
choice of test methods

Exposition sur les lieux de travail - Mesurage du Exposition am Arbeitsplatz - Messung des

pouvoir de resuspension des matériaux en vrac Staubungsverhaltens von Schüttgütern, die

contenant ou émettant des nano-objets et leurs Nanoobjekte oder Submikrometerpartikel enthalten

agrégats et agglomérats (NOAA) ou autres particules oder freisetzen - Teil 1: Anforderungen und Auswahl

en fraction alvéolaire - Partie 1: Exigences et choix des des Prüfverfahrens
méthodes d'essai
This European Standard was approved by CEN on 8 February 2019.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17199-1:2019 E

worldwide for CEN national Members.
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SIST EN 17199-1:2019
EN 17199-1:2019 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 7

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 8

4 Symbols and abbreviations ......................................................................................................................... 9

5 Principle .......................................................................................................................................................... 10

5.1 General ............................................................................................................................................................. 10

5.2 Metric and measurand ............................................................................................................................... 12

5.3 Choice of time-resolving and size-resolving instruments and samplers ................................. 14

5.3.1 General ............................................................................................................................................................. 14

5.3.2 Determination of health related dustiness mass fractions ........................................................... 16

5.3.3 Determination of number-based dustiness indices and number-based emission

rates .................................................................................................................................................................. 16

5.3.4 Determination of the number of modes and the modal aerodynamic equivalent

diameter(s) of the time-averaged number-based particle size distribution ......................... 17

5.3.5 Determination of the number of modes and the modal aerodynamic equivalent

diameters of the time-averaged particle mass-based particle size distribution .................. 17

5.3.6 Morphological and chemical characterization of the collected airborne particles ............. 18

6 General requirements ................................................................................................................................ 19

6.1 Conditioning of the test material ............................................................................................................ 19

6.1.1 General ............................................................................................................................................................. 19

6.1.2 Conditioning specifications ...................................................................................................................... 19

6.1.3 As-received condition ................................................................................................................................. 19

6.2 Conditioning of the test equipment ....................................................................................................... 19

6.3 Sampling from bulk material ................................................................................................................... 20

6.4 Moisture content .......................................................................................................................................... 20

6.5 Bulk density ................................................................................................................................................... 20

6.6 Test procedure .............................................................................................................................................. 20

6.7 Replicate tests ............................................................................................................................................... 20

7 Test methods ................................................................................................................................................. 21

7.1 Available test methods ............................................................................................................................... 21

7.1.1 General ............................................................................................................................................................. 21

7.1.2 Rotating drum and small rotating drum method ............................................................................. 21

7.1.3 Vortex shaker ................................................................................................................................................ 21

7.1.4 Continuous drop method ........................................................................................................................... 21

7.2 General considerations .............................................................................................................................. 22

7.3 Selection of the most appropriate test method ................................................................................. 22

8 Evaluation of dustiness data .................................................................................................................... 23

9 Test report ...................................................................................................................................................... 23

Annex A (normative) Determination of moisture content ........................................................................... 25

A.1 Infrared dryer method ............................................................................................................................... 25

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SIST EN 17199-1:2019
EN 17199-1:2019 (E)

A.1.1 Principle ........................................................................................................................................................... 25

A.1.2 Procedure ........................................................................................................................................................ 25

A.2 Alternative method ...................................................................................................................................... 26

Annex B (normative) Determination of bulk density of the test material in accordance to

EN 15051-1 ...................................................................................................................................................... 27

B.1 Equipment ....................................................................................................................................................... 27

B.2 Special requirements .................................................................................................................................. 27

B.3 Procedure ........................................................................................................................................................ 27

Annex C (informative) Report for electron microscopy ................................................................................ 28

C.1 Methodology information .......................................................................................................................... 28

C.1.1 Description of collection substrate ........................................................................................................ 28

C.1.2 Sampler for electron microscopy analysis .......................................................................................... 28

C.1.3 Preparation for EM analysis ..................................................................................................................... 28

C.1.4 General information about the microscope ........................................................................................ 28

C.2 Results of observations and recording of images and spectra ..................................................... 29

Bibliography ................................................................................................................................................................. 30

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SIST EN 17199-1:2019
EN 17199-1:2019 (E)
European foreword

This document (EN 17199-1:2019) 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.

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 September 2019 and conflicting national standards

shall be withdrawn at the latest by September 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
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SIST EN 17199-1:2019
EN 17199-1:2019 (E)
Introduction

The control of the emitted and released airborne NOAA and other respirable particles during the

handling and transportation of bulk materials is an important consideration for workers’ exposure and

the design and operation of many industrial or research processes. It is therefore important to obtain

information about the propensity of bulk materials to release NOAA and other particles and thus assist

in assessing the risk for exposure to a hazardous material, especially if they penetrate to the alveolar

region (respirable fraction).

Dustiness data have been recommended for nanomaterials exposure assessment by the Organisation

for Economic Co-operation and Development [1]; these are also already in use as an input parameter in

some control banding tools for nanomaterials or to predict the likelihood of exposure by modelling.

Finally, dustiness data can provide the manufacturers of nanomaterials with information that can help

to improve their products (e.g. by selecting less dusty nanomaterials) or the users to improve their

processes or their technical prevention approaches.
Dustiness depends on a number of factors including:

— the physical state of the bulk material (e.g. powder, granules, pellets and moisture content),

— the physicochemical properties of the particles contained in the bulk material (e.g. particle size and

shape, relevant density, type of coating, hydrophobicity and hydrophilicity properties, aggregation

of particles),
— the environment (e.g. moisture, temperature),
— the condition of the bulk material,

— the type of aerosol generation (activation energy or energy input, time characteristics of the energy

input),

— the interaction between particles during agitation (e.g. friction shearing, van der Wall forces), and

— the sampling and measurement configuration.

The aim of dustiness testing is to simulate typical powder processing and handling in order to enable a

comparison of the relative dust release potential of different bulk materials. Data derived from

dustiness testing can be used as input for qualitative or quantitative exposure assessment. Dustiness

involves the application of a given type and amount of activation energy or energy input, to a stipulated

amount of test material during a stipulated time, whereby particles are dispersed into the air and are

described quantitatively. No single dustiness method is likely to represent and reproduce the various

types of processing and handling used in the workplace. Therefore, there are a number of methods for

the design of dustiness devices and different values will be obtained by different test methods.

However, the test and the variables including the sampling and measurement configuration demand to

be closely specified to ensure reproducibility.

Conventional dustiness methods for micrometre-size particles estimate the airborne dust generated in

terms of dustiness mass fraction (e.g. respirable, thoracic, inhalable), given in mg/kg. The current

EN 15051 standard series for conventional dustiness provides two methods: the rotating drum method

and the continuous drop method. Although these methods are accepted standards for micrometre-size

particles, the biological behaviour of NOAA, because of their small particle size and surface area, has

raised the question whether the dustiness can be adequately characterized by their mass fraction only.

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SIST EN 17199-1:2019
EN 17199-1:2019 (E)

Therefore, particle number concentration and particle size distribution are other important

measurands for measuring and characterizing the dustiness of bulk material containing NOAA . The

test provided in this document is also applicable to powders not falling under the EC recommended

nanomaterial definition, which nevertheless might release airborne NOAA during handling.

This document together with EN 17199-2 to EN 17199-5 establish test methods that measure the

dustiness of bulk materials containing NOAA in terms of health related dustiness mass fraction,

number-based dustiness index and number-based emission rate. In addition, it establishes test methods

that characterize the aerosol from its particle size distribution and the morphology and chemical

composition of its particles. It also gives guidance on the choice of a test method from four methods: the

rotating drum, the continuous drop, the small rotating drum and the vortex shaker. These methods

require different amount of test material and allow the application of a wide range of energy inputs to

those materials. The rotating drum methods differ from the continuous drop and the vortex shaker

methods. In the rotating drum, the bulk material is repeatedly dropped while in the continuous drop, it

is dropped only once but continuously. In the vortex shaker, the bulk material is subjected to a much

higher energy input. The principle of the rotating drum method is similar to that of the small rotating

drum method.

This document was originally developed based on the results of pre-normative research [3]. This

project investigated the dustiness of ten bulk materials (including nine bulk nanomaterials) with the

intention to test as wide a range of bulk materials as possible in terms of magnitude of dustiness,

chemical composition and primary particle size distribution as indicated by a high range in specific

surface area.

Although dustiness can be considered as a factor determining the exposure, the results of the selected

test method cannot be directly used as an estimate of workplace exposure in the intended application.

1) CEN ISO/TS 12025 [2] provides general methodology for the quantification of nano-object release from

powders as a result of treatment, ranging from handling to high energy dispersion, by measuring aerosols

liberated after a defined aerosolization procedure. However, it does not establish test methods.

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SIST EN 17199-1:2019
EN 17199-1:2019 (E)
1 Scope

This document provides the methodology for measuring and characterizing the dustiness of a bulk

material that contains or releases respirable NOAA and other respirable particles. In addition, it

specifies the environmental conditions, the sample handling procedure and the method of calculating

and presenting the results. Guidance is given on the choice of method to be used.

The methodology described in this document enables:

a) the quantification of dustiness in terms of health related dustiness mass fractions,

b) the quantification of dustiness in terms of a number-based dustiness index and a number-based

emission rate, and

c) the characterization of the aerosol from its particle size distribution and the morphology and

chemical composition of its particles.

NOTE 1 Currently, no number-based classification scheme in terms of particle number has been established for

particle dustiness release. Eventually, when a large enough number of measurement data has been obtained, the

intention is to revise this document and to introduce a number-based classification scheme.

This document is applicable to all bulk materials, including powders, granules or pellets, containing or

releasing respirable NOAA ad other respirable particles.

NOTE 2 The vortex shaker method specified in part 5 of this standard series has not yet been evaluated for

pellets and granules.

NOTE 3 The rotating drum and continuous drop methods have not yet been evaluated for nanofibres and

nanoplates.

This document does not provide methods for assessing the release of particles during handling or

mechanical reduction by machining (e.g. crushing, cutting, sanding, sawing) of nanocomposites.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

CEN ISO/TS 80004-2, Nanotechnologies - Vocabulary - Part 2: Nano-objects (ISO/TS 80004-2)

EN 1540, Workplace exposure - Terminology

EN 13205-2, Workplace exposure - Assessment of sampler performance for measurement of airborne

particle concentrations - Part 2: Laboratory performance test based on determination of sampling

efficiency

EN 15051-1, Workplace exposure - Measurement of the dustiness of bulk materials - Part 1: Requirements

and choice of test methods

EN 15051-2, Workplace exposure - Measurement of the dustiness of bulk materials - Part 2: Rotating drum

method

EN 15051-3, Workplace exposure - Measurement of the dustiness of bulk materials - Part 3: Continuous

drop method

EN 16897, Workplace exposure - Characterization of ultrafine aerosols/nanoaerosols - Determination of

number concentration using condensation particle counters
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SIST EN 17199-1:2019
EN 17199-1:2019 (E)

EN 17199-2, Workplace exposure - Measurement of dustiness of bulk materials that contain or release

respirable NOAA and other respirable particles - Part 2: Rotating drum method

EN 17199-3, Workplace exposure - Measurement of dustiness of bulk materials that contain or release

respirable NOAA and other respirable particles - Part 3: Continuous drop method

EN 17199-4, Workplace exposure - Measurement of dustiness of bulk materials that contain or release

respirable NOAA and other respirable particles - Part 4: Small rotating drum method

EN 17199-5, Workplace exposure - Measurement of dustiness of bulk materials that contain or release

respirable NOAA and other respirable particles - Part 5: Vortex shaker method

ISO 15900, Determination of particle size distribution - Differential electrical mobility analysis for aerosol

particles

ISO 27891, Aerosol particle number concentration - Calibration of condensation particle counters

3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 1540, EN 15051-1,

CEN ISO/TS 80004-2 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
background particle
particle infiltrated from the laboratory
3.2
bulk material

any solid material, which can be tipped, mixed, scooped, or similar, either mechanically or by hand

including powders, granules or pellets containing or releasing nano-objects or submicrometer particles

in either unbound, bound uncoated and coated forms
3.3
nanomaterial

material with any external dimensions in the nanoscale or having internal structure or surface structure

in the nanoscale
[SOURCE: CEN ISO/TS 80004-1:2015 [4]]
3.4
number-based dustiness index

ratio of the number of particles released over the duration of the test to the test mass for the respective

dustiness test method
3.5
number-based emission rate

ratio of the number of particles released per second over the duration of the test to the test mass for the

respective dustiness test method
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SIST EN 17199-1:2019
EN 17199-1:2019 (E)
3.6
particle size distribution
distribution of particles as a function of particle size

Note 1 to entry: Particle size distribution can be expressed as cumulative distribution or a distribution density

(distribution of the fraction of material in a particle size class, divided by the width of that class).

Note 2 to entry: Adapted from EN ISO 14644-1:2015 [5].
3.7
particle size

linear dimension of a particle determined by a specified measurement method and under specified

measurement conditions
[SOURCE: ISO 26824:2013[6]]
4 Symbols and abbreviations
AES Atomic Emission Spectroscopy
®2)
Aerodynamic Particle Sizer
APS
BET Brunauer–Emmett–Teller
CPC Condensation Particle Counter
d A lower particle size at which the counting or sampling efficiency is 50 %
DEMC Differential Electrical Mobility Classifier
DMAS Differential Mobility Analysing System
Electrical Low Pressure Impactor
ELPI
EM Electron Microscopy
ICP Inductively coupled plasma
MS Mass Spectrometry
NOAA Nano-objects, and their aggregates and agglomerates > 100 nm
RH Relative Humidity
SEM Scanning Electron Microscopy
TEM Transmission Electron Microscopy
XRF X-ray fluorescence

2) APS is the trade name or trademark of a product supplied by TSI Instruments Ltd. This information is given

for the convenience of users of this European Standard and does not constitute an endorsement by CEN of the

product named. Equivalent products may be used if they can be shown to lead to the same results.

3) ELPI is the trade name or trademark of a product supplied by Dekati. This information is given for the

convenience of users of this European Standard and does not constitute an endorsement by CEN of the product

named. Equivalent products may be used if they can be shown to lead to the same results.

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5 Principle
5.1 General

Figures 1 and 2 show flow charts to provide the user of this document a route through the necessary

stages that shall be taken into account to obtain values of the dustiness parameters of a given bulk

material.
Figure 1 — Flow chart decision for the supplier of the bulk material
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Figure 2 — Flow chart decision for the testing laboratory
Four test methods are described:
— the rotating drum method (see EN 17199-2);
— the continuous drop method (see EN 17199-3);
— the small rotating drum method (see EN 17199-4);
— the vortex shaker method (see EN 17199-5).
All four test methods consist of the following elements:

a) air conditioning system in case the laboratory itself cannot be controlled to the required

temperature and relative humidity;
b) dust generation section;
c) sampling train;

d) measurement section: aerosol real-time instruments for time-resolved particle concentrations and

time-resolved particle size distribution as well as dust sampling devices for respirable mass

fraction and or off-line analysis of particles.
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For the determination of the inhalable, (thoracic) and respirable dustiness index mass fractions for the

rotating drum methods and the continuous drop method, see EN 15051-1, EN 15051-2 and EN 15051-3.

Bulk material, with known moisture content and bulk density, is weighed and then placed in the dust

generation section, where it is treated under standard conditions for a set period of time. The bulk

density shall be measured as given in 6.5. The airborne dust released is drawn from the dust generation

unit, through the dust transfer section and sampling train into the sampling section. Here, real-time

aerosol instruments measure time-resolved particle concentrations and time-resolved particle size

distribution of the aerosol generated within the aerosolization systems. In addition, sampling devices

collect particles for gravimetric and/or off-line chemical/morphological analysis. Chemical composition

analysis can provide useful information when testing a bulk material consisting of a mixture of chemical

substances.
The dustiness data can be used to understand
...

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