IEC 62321-4:2013

IEC 62321-4 ®
Edition 1.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL STANDARD
NORME HORIZONTALE
Determination of certain substances in electrotechnical products –
Part 4: Mercury in polymers, metals and electronics by CV-AAS, CV-AFS,
ICP-OES and ICP-MS
Détermination de certaines substances dans les produits électrotechniques –
Partie 4: Mercure dans les polymères, métaux et produits électroniques par
CV-AAS, CV-AFS, ICP-OES et ICP-MS

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IEC 62321-4 ®
Edition 1.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL STANDARD
NORME HORIZONTALE
Determination of certain substances in electrotechnical products –

Part 4: Mercury in polymers, metals and electronics by CV-AAS, CV-AFS,

ICP-OES and ICP-MS
Détermination de certaines substances dans les produits électrotechniques –

Partie 4: Mercure dans les polymères, métaux et produits électroniques par

CV-AAS, CV-AFS, ICP-OES et ICP-MS

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.020; 43.040.10 ISBN 978-2-83220-841-0

– 2 – 62321-4 © IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 8
3.1 Terms and definitions . 8
3.2 Abbreviations . 9
4 Reagent and materials. 9
4.1 General . 9
4.2 Reagents . 9
4.3 Materials . 11
5 Apparatus . 11
5.1 General . 11
5.2 Apparatus . 11
6 Sampling and test portion . 12
7 Procedure. 12
7.1 Wet digestion (digestion of electronics) . 12
7.2 Microwave digestion . 13
7.3 Thermal decomposition-gold amalgamation system . 13
7.4 Preparation of reagent blank solution . 14
8 Calibration . 14
8.1 General . 14
8.2 Development of the calibration curve . 14
8.3 Measurement of the sample . 15
9 Calculation . 15
10 Precision . 16
11 Quality assurance and control . 16
11.1 General . 16
11.2 Limits of detection (LOD) and limits of quantification (LOQ) . 17
Annex A (informative) Practical application of determination of mercury in polymers,
metals and electronics by CV-AAS, AFS, ICP-OES and ICP-MS . 19
Annex B (informative) Results of international interlaboratory study Nos. 2 (IIS2) and

4A (IIS 4A) . 24
Bibliography . 25

Figure A.1 – Heating digester equipped with reaction vessel, reflux cooler and
absorption vessel . 19
Figure A.2 – Configuration of equipment with AAS (example) . 20
Figure A.3 – Mercury collecting tube (example) . 21
Figure A.4 – Configuration (example) of the thermal decomposition/atomic absorption
spectrometer for CCFL. 22

Table 1 – Repeatability and reproducibility . 16
Table 2 – Acceptance criteria of items for the quality control . 17

62321-4 © IEC:2013 – 3 –
Table 3 – Method detection limit = t × s . 18
n–1
Table A.1 – Program for microwave digestion (example) of samples (power output for
five vessels). 20
Table B.1 – Statistical data for TD(G)-AAS . 24
Table B.2 – Statistical data for CV-AAS . 24
Table B.3 – Statistical data for CV-AFS . 24
Table B.4 – Statistical data for ICP-OES . 24

– 4 – 62321-4 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DETERMINATION OF CERTAIN SUBSTANCES
IN ELECTROTECHNICAL PRODUCTS –

Part 4: Mercury in polymers, metals and electronics
by CV-AAS, CV-AFS, ICP-OES and ICP-MS

FOREWORD
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