Determination of certain substances in electrotechnical products - Part 9: Hexabromocyclododecane in polymers by chromatography-mass spectrometry (GC-MS)

This part of IEC 62321 specifies two techniques for the determination of
hexabromocyclododecane (HBCDD) in polymers of electrotechnical products.
The gas chromatography-mass spectrometry (GC-MS) test method is described in the
normative part of this document. The GC-MS method is suitable for the determination of
hexabromocyclododecane (HBCDD).
A method using high-pressure liquid chromatography-mass spectrometry (HPLC-MS) is given
in informative Annex A.
These test methods have been evaluated for use with EPS (expanded polystyrene foam),
XPS (extruded polystyrene foam) and ABS (acrylonitrile butadiene styrene) within the
concentration ranges as specified in Table 1. The use of this method for other types of materials
or concentration ranges outside those specified below has not been evaluated.
This document has the status of a horizontal standard in accordance with IEC Guide 108.

Verfahren zur Bestimmung von bestimmten Substanzen in Produkten der Elektrotechnik – Teil 9: Hexabromcyclododecan in Polymeren durch Chromatographie-Massenspektrometrie (GC-MS)

Détermination de certaines substances dans les produits électrotechniques - Partie 9: Hexabromocyclododécane dans les polymères par chromatographie en phase gazeuse-spectrométrie de masse (GC-MS)

L'IEC 62321-9:2021 spécifie deux techniques pour la détermination de l’hexabromocyclododécane (HBCDD) dans les polymères des produits électrotechniques. La méthode d’essai par chromatographie en phase gazeuse-spectrométrie de masse (GC-MS) est décrite dans la partie normative du présent document. La méthode GC-MS convient à la détermination de l’hexabromocyclododécane (HBCDD). L’Annexe A informative spécifie une méthode utilisant la chromatographie en phase liquide sous haute pression-spectrométrie de masse (HPLC-MS). Ces méthodes d’essai ont été évaluées pour une utilisation avec une mousse EPS (polystyrène expansé), XPS (polystyrène extrudé) et de l’ABS (acrylonitrile-butadiène-styrène) dans les plages de concentrations spécifiées. L’utilisation de ces méthodes pour d’autres types de matériaux ou des plages de concentrations en dehors de celles spécifiées ci-dessous n’a pas été évaluée. Le présent document a le statut d'une norme horizontale conformément au Guide IEC 108.

Določevanje posameznih snovi v elektrotehničnih izdelkih - 9. del: Heksabromociklododekan v polimerih s plinskim kromatografom z masnim spektrometrom (GC-MS)

General Information

Status
Published
Publication Date
14-Nov-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
22-Oct-2021
Due Date
27-Dec-2021
Completion Date
15-Nov-2021

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SLOVENSKI STANDARD
SIST EN IEC 62321-9:2021
01-december-2021
Določevanje posameznih snovi v elektrotehničnih izdelkih - 9. del:
Heksabromociklododekan v polimerih s plinskim kromatografom z masnim
spektrometrom (GC-MS)
Determination of certain substances in electrotechnical products - Part 9:
Hexabromocyclododecane in polymers by chromatography-mass spectrometry (GC-MS)
Ta slovenski standard je istoveten z: EN IEC 62321-9:2021
ICS:
29.020 Elektrotehnika na splošno Electrical engineering in
general
31.020 Elektronske komponente na Electronic components in
splošno general
71.040.50 Fizikalnokemijske analitske Physicochemical methods of
metode analysis
SIST EN IEC 62321-9:2021 en

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

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SIST EN IEC 62321-9:2021
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SIST EN IEC 62321-9:2021
EUROPEAN STANDARD EN IEC 62321-9
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2021
ICS 13.020.01; 43.040.10
English Version
Determination of certain substances in electrotechnical products
- Part 9: Hexabromocyclododecane in polymers by
chromatography-mass spectrometry (GC-MS)
(IEC 62321-9:2021)

Détermination de certaines substances dans les produits Verfahren zur Bestimmung von bestimmten Substanzen in

électrotechniques - Partie 9: Hexabromocyclododécane Produkten der Elektrotechnik - Teil 9:

dans les polymères par chromatographie en phase Hexabromcyclododecan in Polymeren durch

gazeuse-spectrométrie de masse (GC-MS) Chromatographie-Massenspektrometrie (GC-MS)

(IEC 62321-9:2021) (IEC 62321-9:2021)

This European Standard was approved by CENELEC on 2021-10-04. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62321-9:2021 E
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SIST EN IEC 62321-9:2021
EN IEC 62321-9:2021 (E)
European foreword

The text of document 111/620/FDIS, future edition 1 of IEC 62321-9, prepared by IEC/TC 111

“Environmental standardization for electrical and electronic products and systems” was submitted to

the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62321-9:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2022–07–04

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024–10–04

document have to be withdrawn

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

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

Any feedback and questions on this document should be directed to the users’ national committee. A

complete listing of these bodies can be found on the CENELEC website.
Endorsement notice

The text of the International Standard IEC 62321-9:2021 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 62321-2 NOTE Harmonized as EN 62321-2
IEC 62321-3-1 NOTE Harmonized as EN 62321-3-1
ISO 3696 NOTE Harmonized as EN ISO 3696
ISO 5667-1 NOTE Harmonized as EN ISO 5667-1
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SIST EN IEC 62321-9:2021
EN IEC 62321-9:2021 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the

relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62321-1 2013 Determination of certain substances in EN 62321-1 2013
electrotechnical products - Part 1:
Introduction and overview
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SIST EN IEC 62321-9:2021
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SIST EN IEC 62321-9:2021
IEC 62321-9
Edition 1.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL PUBLICATION
PUBLICATION HORIZONTALE
Determination of certain substances in electrotechnical products –
Part 9: Hexabromocyclododecane in polymers by gas chromatography-mass
spectrometry (GC‑MS)
Détermination de certaines substances dans les produits électrotechniques –
Partie 9: Hexabromocyclododécane dans les polymères par chromatographie
en phase gazeuse-spectrométrie de masse (GC‑MS)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.020.01; 43.040.10 ISBN 978-2-8322-9960-9

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 62321-9:2021
– 2 – IEC 62321-9:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

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

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

3 Terms, definitions and abbreviated terms ........................................................................ 7

3.1 Terms and definitions .............................................................................................. 7

3.2 Abbreviated terms ................................................................................................... 8

4 Principle .......................................................................................................................... 8

5 Reagents and materials ................................................................................................... 8

6 Apparatus ........................................................................................................................ 9

7 Sampling ......................................................................................................................... 9

8 Procedure ...................................................................................................................... 10

8.1 General instructions for the analysis ..................................................................... 10

8.2 Sample preparation ............................................................................................... 10

8.2.1 Stock solution ................................................................................................ 10

8.2.2 Pre-extraction of the Soxhlet extractors ......................................................... 10

8.2.3 Soxhlet extraction .......................................................................................... 10

8.2.4 Alternative extraction procedure for soluble polymers .................................... 11

8.2.5 Addition of the internal standard (IS) ............................................................. 11

8.3 Instrumental parameters ....................................................................................... 11

8.4 Calibrants ............................................................................................................. 12

8.5 Calibration ............................................................................................................ 12

8.5.1 General ......................................................................................................... 12

8.5.2 Standard solutions ......................................................................................... 12

9 Calculation of HBCDD concentration ............................................................................. 13

9.1 General ................................................................................................................. 13

9.2 Calculation ............................................................................................................ 13

10 Precision ....................................................................................................................... 15

11 Quality assurance and quality control ............................................................................ 16

11.1 Performance ......................................................................................................... 16

11.2 Internal control samples and blanks ...................................................................... 17

11.3 Method detection limit (MDL) and reporting limit ................................................... 17

12 Test report ..................................................................................................................... 18

Annex A (informative) Determination of HBCDD in polymers by high-pressure liquid

chromatography-mass spectrometry (HPLC-MS) ........................................................... 19

A.1 Principle ............................................................................................................... 19

A.2 Reagents and materials ........................................................................................ 19

A.3 Apparatus ............................................................................................................. 19

A.4 Sampling............................................................................................................... 20

A.5 Procedure ............................................................................................................. 20

A.5.1 General instructions for the analysis .............................................................. 20

A.5.2 Sample preparation ....................................................................................... 20

A.5.3 Instrumental parameters ................................................................................ 21

A.5.4 Calibrants ...................................................................................................... 22

A.5.5 Calibration ..................................................................................................... 22

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SIST EN IEC 62321-9:2021
IEC 62321-9:2021 © IEC 2021 – 3 –

A.6 Calculation of HBCDD concentration ..................................................................... 23

A.6.1 General ......................................................................................................... 23

A.6.2 Calculation .................................................................................................... 23

A.7 Precision ............................................................................................................... 24

A.8 Quality assurance and quality control .................................................................... 25

A.8.1 Performance .................................................................................................. 25

A.8.2 Method detection limit (MDL) and reporting limit ............................................ 25

A.9 Test report ............................................................................................................ 26

Annex B (informative) Examples of chromatograms at suggested conditions ........................ 27

Annex C (informative) Results of international interlaboratory study (IIS 9) ......................... 29

Bibliography .......................................................................................................................... 31

Figure B.1 – Total ion chromatogram of HBCDD by GC‑MS analysis..................................... 27

Figure B.2 – Mass spectrum of HBCDD by GC‑MS analysis .................................................. 27

Figure B.3 – Total ion chromatogram of HBCDD isomers (α-, β-, γ-HBCDD) by HPLC-

MS analysis .......................................................................................................................... 28

Table 1 – Tested concentration ranges for HBCDD by GC‑MS in various materials ................. 7

Table 2 – Reference masses for the quantification of HBCDD ............................................... 12

Table 3 – Commercially available HBCDD reference materials considered suitable for

GC-MS analysis .................................................................................................................... 12

Table 4 – Calibration solutions of HBCDD ............................................................................. 13

Table 5 – IIS 9 repeatability and reproducibility ..................................................................... 16

Table A.1 – HPLC-MS liquid phase ....................................................................................... 21

Table A.2 – Commercially available HBCDD reference materials considered suitable

for HPLC-MS analysis ........................................................................................................... 22

Table A.3 – Calibration solutions of HBCDD ......................................................................... 23

Table A.4 – IIS 9 repeatability and reproducibility ................................................................. 25

Table C.1 – Mean results and recovery rates for HBCDD using GC‑MS ................................ 29

Table C.2 – Statistical data for GC‑MS ................................................................................. 29

Table C.3 – Mean results and recovery rates for HBCDD using HPLC-MS ............................ 29

Table C.4 – Statistical data for HPLC-MS ............................................................................. 30

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SIST EN IEC 62321-9:2021
– 4 – IEC 62321-9:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DETERMINATION OF CERTAIN SUBSTANCES
IN ELECTROTECHNICAL PRODUCTS –
Part 9: Hexabromocyclododecane in polymers
by gas chromatography-mass spectrometry (GC‑MS)
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

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

IEC 62321-9 has been prepared by IEC technical committee 111: Environmental

standardization for electrical and electronic products and systems. It is an International

Standard.
The text of this International Standard is based on the following documents:
FDIS Report on voting
111/620/FDIS 111/631/RVD

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this International Standard is English.
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SIST EN IEC 62321-9:2021
IEC 62321-9:2021 © IEC 2021 – 5 –

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications.

A list of all parts in the IEC 62321 series, published under the general title Determination of

certain substances in electrotechnical products, can be found on the IEC website

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN IEC 62321-9:2021
– 6 – IEC 62321-9:2021 © IEC 2021
INTRODUCTION

The widespread use of electrotechnical products has drawn increased attention to their impact

on the environment. In many countries this has resulted in the adoption of regulations affecting

wastes, substances and energy use of electrotechnical products.

The use of certain substances (e.g. lead (Pb), cadmium (Cd) and polybrominated diphenyl

ethers (PBDEs) in electrotechnical products is a source of concern in current and proposed

regional legislation.

The purpose of this document is therefore to provide test methods that will allow the

electrotechnical industry to determine the levels of certain substances of concern in

electrotechnical products on a consistent global basis.
WARNING – Persons using this document should be familiar with normal laboratory

practice. This document does not purport to address all of the safety problems, if any,

associated with its use. It is the responsibility of the user to establish appropriate safety

and health practices and to ensure compliance with any national regulatory conditions.

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SIST EN IEC 62321-9:2021
IEC 62321-9:2021 © IEC 2021 – 7 –
DETERMINATION OF CERTAIN SUBSTANCES
IN ELECTROTECHNICAL PRODUCTS –
Part 9: Hexabromocyclododecane in polymers
by gas chromatography-mass spectrometry (GC‑MS)
1 Scope
This part of IEC 62321 specifies two techniques for the determination of
hexabromocyclododecane (HBCDD) in polymers of electrotechnical products.
The gas chromatography-mass spectrometry (GC-MS) test method is described in the

normative part of this document. The GC-MS method is suitable for the determination of

hexabromocyclododecane (HBCDD).

A method using high-pressure liquid chromatography-mass spectrometry (HPLC-MS) is given

in informative Annex A.

These test methods have been evaluated for use with EPS (expanded polystyrene foam),

XPS (extruded polystyrene foam) and ABS (acrylonitrile butadiene styrene) within the

concentration ranges as specified in Table 1. The use of this method for other types of materials

or concentration ranges outside those specified below has not been evaluated.
Table 1 – Tested concentration ranges for HBCDD by GC‑MS in various materials
Substance or element HBCDD
Medium or material tested
Unit of
Parameter
measurement ABS
EPS/XPS
mg/kg
Concentration range tested 6 080 to 11 940 1 000 to 10 000

This document has the status of a horizontal standard in accordance with IEC Guide 108.

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.

IEC 62321-1:2013, Determination of certain substances in electrotechnical products – Part 1:

Introduction and overview
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 62321-1 apply.

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

addresses:
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SIST EN IEC 62321-9:2021
– 8 – IEC 62321-9:2021 © IEC 2021
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.2 Abbreviated terms
ABS acrylonitrile butadiene styrene
API-ES atmospheric pressure-electrospray
BFR brominated flame retardant
BSA N,O-Bis(trimethylsilyl)acetamide
BSTFA N,O-Bis(trimethylsilyl)trifluoroacetamide
CCC continuing calibration check
C-IC combustion-ion chromatography
EI electron ionization
EPS expanded polystyrene foam
HBCDD hexabromocyclododecane
HPLC-MS high-pressure liquid chromatography-mass spectrometry
ID internal diameter
IS internal standard
GC‑MS gas chromatography-mass spectrometry
LOD limit of detection
LOQ limit of quantification
MDL method detection limit
PTFE polytetrafluoroethylene
QC quality control
RSD relative standard deviation
SIM single (or "selected") ion monitoring
THF tetrahydrofuran
TIF tentatively identified compound
XPS extruded polystyrene foam
XRF X-ray fluorescence
UV ultraviolet
4 Principle

HBCDD is determined using ultrasonic or Soxhlet extraction followed by gas chromatography

separation and mass spectrometry determination. This technique is suitable to determinate total

HBCDD instead of separated HBCDD isomers.

NOTE The thermal stability of HBCDD is poor. The results can be influenced by the temperature testing conditions.

5 Reagents and materials

All reagent chemicals shall be tested for contamination and blank values prior to application.

a) toluene (guaranteed reagent, purity of greater than a volume fraction of 99 %);

b) tetrahydrofuran (THF) (guaranteed reagent, purity of greater than a volume fraction of 99 %);

c) acetonitrile (guaranteed reagent, purity of greater than a volume fraction of 99 %);

d) methanol (guaranteed reagent, purity of greater than a volume fraction of 99 %);

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SIST EN IEC 62321-9:2021
IEC 62321-9:2021 © IEC 2021 – 9 –
e) mixed solvent solution (tetrahydrofuran and acetonitrile or methanol),

– add 500 ml tetrahydrofuran and 1 000 ml acetonitrile or methanol to a 2 000 ml beaker

and mix;

f) calibrants hexabromocyclododecane (guaranteed reagent, purity of greater than a volume

fraction of 99 %): see 8.4;
g) helium (purity of greater than a volume fraction of 99,999 %);

h) internal standard used to correct for injection errors (e.g. CB 209 (2,2’,3,3’,4,4’,5,5’,6,6’-

decachlorobiphenyl)).
6 Apparatus
The following items shall be used for the analysis:
a) analytical balance capable of measuring accurately to 0,000 1 g;
b) 10 ml, 20 ml, 500 ml, 1 000 ml volumetric flasks;
c) Soxhlet device, Soxhlet extractor of 200 ml or suitable volume;
d) extraction thimble;
e) heating jackets;
f) funnel (non plastic);
g) aluminium foil;
h) ultrasonic bath;
i) Pasteur pipette;
j) glass wool;

k) 1,5 ml sample vials with 100 µl glass insert and a screw cap with polytetrafluoroethylene

(PTFE) gasket or, depending on the analytical system, a comparable sample receptacle;

l) a gas chromatograph with a capillary column coupled to a mass spectrometric detector

(electron ionization, EI). The mass spectrometric detector shall be able to perform selective

ion monitoring. The use of an autosampler is strongly recommended to ensure repeatability.

A column length of approximately 30 m is suitable for sufficient separation efficiency for

HBCDD;
m) rotary evaporator with water bath;
n) milling equipment;
o) 0,45 µm PTFE filter membrane.
p) No. 5A filter paper.
7 Sampling

As described in IEC 62321-2, unless indicated otherwise, the following procedure a) is

recommended.
a) Cut samples approximately to a size of 2 mm × 2 mm, and mix them well.

NOTE 1 When using the alternative ultrasonic dissolution procedure for polymers that are difficult to dissolve,

cryogenic grinding with liquid nitrogen cooling is necessary. The samples are ground to pass through a 500 µm

sieve.
NOTE 2 Contact with polymer material are avoided during sampling.
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SIST EN IEC 62321-9:2021
– 10 – IEC 62321-9:2021 © IEC 2021
8 Procedure
8.1 General instructions for the analysis
The following general instructions shall be followed:

In order to reduce blank values, ensure the cleanliness of all glass equipment (excluding

volumetric flasks) and deactivate the glass wool by subjecting it to 450 °C for at least 30 min.

To avoid decomposition and/or debromination of HBCDD by UV light during extraction and

analysis, glass equipment made from brown or amber glass shall be used.

NOTE If no brown or amber glass is available, aluminium foil can be used for protection from light.

If the amount of Br in the sample (determined by XRF, C-IC or other means) is considerably

above the 0,1 % range, it will be necessary to carry out the analysis using an adjusted sample

size or by repeating the analysis using an extract that has been appropriately diluted prior to

internal standard addition.
8.2 Sample preparation
8.2.1 Stock solution

a) Standard mixture solution: Prepare a standard mixture solution containing α, β, γ-HBCDD

in an organic solvent at a concentration of 10 µg/ml made from e
...

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