ISO 11495:2019
(Main)Jewellery and precious metals — Determination of palladium in palladium alloys — ICP-OES method using an internal standard element
Jewellery and precious metals — Determination of palladium in palladium alloys — ICP-OES method using an internal standard element
This document describes an analytical procedure for the determination of palladium in palladium alloys with a nominal content up to 990 ? (parts per thousand), including alloys according to ISO 9202.
Joaillerie, bijouterie et métaux précieux — Dosage du palladium dans les alliages de palladium — Méthode par ICP-OES utilisant un étalon interne
Le présent document décrit un mode opératoire analytique pour le dosage du palladium dans les alliages de palladium, d'une teneur nominale allant jusqu'à 990 ? (millièmes), notamment pour les alliages conformes à l'ISO 9202.
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INTERNATIONAL ISO
STANDARD 11495
Third edition
2019-07
Jewellery and precious metals —
Determination of palladium in
palladium alloys — ICP-OES method
using an internal standard element
Joaillerie et métaux précieux — Dosage du palladium dans les alliages
de palladium — Méthode par ICP-OES utilisant un étalon interne
Reference number
©
ISO 2019
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3	 Terms	and	definitions . 1
4 Principle . 1
5 Reagents . 1
6 Equipment . 2
7 Sampling . 2
8 Procedure. 2
8.1 Internal standard solution . 2
8.2 Calibration solutions . 2
8.3 Sample solutions . 2
8.4 Measurements . 2
9 Calculation and expression of results . 3
9.1 Calculation . 3
9.2 Repeatability . 4
10 Test report . 4
Bibliography . 6
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 174, Jewellery and precious metals.
This third edition cancels and replaces the second edition (ISO 11495:2014), which has been technically
revised. The main changes compared to the previous edition are as follows:
a) the definition of bracketing in Clause 3 has been removed;
b) the recommended lines in Clause 4 have been removed;
c) reagents in Clause 5 have been changed and removed, and the requirements about yttrium in 5.4
have been removed;
d) the preparation of the internal standard solution in 8.1 has been changed;
e) the list of standards to be prepared and precisions about qualification of them by linearity as well
as way to choose the low and high standards in 8.2 have been changed;
f) the way of preparation by aliquots for both standard and sample solutions in 8.2 and 8.3 has been
removed;
g) the preparation of both standard and sample solutions in 8.2 and 8.3 has been changed;
h) the definition of bracketing and recommended lines in 8.4 has been added;
i) the formulae in 9.1 have been adapted after having removed the way of preparation by aliquots;
j) the emission line as an information to be mentioned in the test report in Clause 10 has been
removed;
k) the document has been editorially revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved
INTERNATIONAL STANDARD ISO 11495:2019(E)
Jewellery and precious metals — Determination of
palladium in palladium alloys — ICP-OES method using an
internal standard element
1 Scope
This document describes an analytical procedure for the determination of palladium in palladium alloys
with a nominal content up to 990 ‰ (parts per thousand), including alloys according to ISO 9202.
2 Normative references
There are no normative references in this document.
3	 Terms	and	definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Principle
At least two accurately weighed samples are dissolved in aqua regia and made up to an exactly weighed
mass. These sample solutions are mixed with the internal s
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ISO/TC 174/SC
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Date:  2019‐07
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ISO/TC 174/SC /WG 1
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Secretariat:  DIN
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Jewellery and precious metals — Determination of palladium in palladium alloys
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— ICP-OES method using an internal standard element
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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.
The	procedures	used	to	develop	this	document	and	those	intended	for	its	further	maintenance	are
described	in	the	ISO/IEC	Directives,	Part	1.	In	particular,	the	different	approval	criteria	needed	for	the
different	types	of	ISO	documents	should	be	noted.	This	document	was	drafted	in	accordance	with	the
editorial	rules	of	the	ISO/IEC	Directives,	Part	2	(see	www.iso.org/directives).
Deleted: www.iso.org/directives
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.	Details	of
any	patent	rights	identified	during	the	development	of	the	document	will	be	in	the	Introduction	and/or
on	the	ISO	list	of	patent	declarations	received	(see	www.iso.org/patents).	 Deleted: www.iso.org/patents
Any	trade	name	used	in	this	document	is	information	given	for	the	convenience	of	users	and	does	not
constitute	an	endorsement.
For	an	explanation	of	the	voluntary	nature	of	standards,	the	meaning	of	ISO	specific	terms	and
expressions	related	to	conformity	assessment,	as	well	as	information	about	ISO's	adherence	to	the
World	Trade	Organization	(WTO)	principles	in	the	Technical	Barriers	 to	 Trade	 (TBT)
see	www.iso.org/iso/foreword.html.	 Deleted: www.iso.org/iso/foreword.html
This	document	was	prepared	by	Technical	Committee	ISO/TC	174,	Jewellery and precious metals.
This	third	edition	cancels	and	replaces	the	second	edition	(ISO	11495:2014),	which	has	been	technically	 Formatted:	Font:
revised.	The	main	changes	compared	to	the	previous	edition	are	as	follows:
Formatted:	Font:
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a)	 the	definition	of	bracketing	in	Clause	3	has	been	removed;
b)	 the	recommended	lines	in	Clause	4	have	been	removed;
c)	 reagents	in	Clause	5	have	been	changed	and	removed,	and	the	requirements	about	yttrium	in	5.4
have	been	removed;
d)	 the	preparation	of	the	internal	standard	solution	in	8.1	has	been	changed;
e)	 the	list	of	standards	to	be	prepared	and	precisions	about	qualification	of	them	by	linearity	as	well
as	way	to	choose	the	low	and	high	standards	in	8.2	have	been	changed;
f)	 the	way	of	preparation	by	aliquots	for	both	standard	and	sample	solutions	in	8.2	and	8.3	has	been
removed;
g)	 the	preparation	of	both	standard	and	sample	solutions	in	8.2	and	8.3	has	been	changed;
h)	 the	definition	of	bracketing	and	recommended	lines	in	8.4	has	been	added;
i)	 the	formulae	in	9.1	have	been	adapted	after	having	removed	the	way	of	preparation	by	aliquots;
ii	 ©	ISO	2019	–	All	rights	reserved
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j)	 the	emission	line	as	an	information	to	be	mentioned	in	the	test	report	in	Clause	10	has	been
removed;
k)	 the	document	has	been	editorially	revised.
Any	feedback	or	questions	on	this	document	should	be	directed	to	the	user’s	national	standards	body.	A
complete	listing	of	these	bodies	can	be	found	at	www.iso.org/members.html.	 Deleted: www.iso.org/members.ht
ml
©	ISO	2019	–	All	rights	reserved iii
Deleted: /PRF
INTERNATIONAL STANDARD ISO 11495:2019(E)
Jewellery and precious metals — Determination of palladium
in palladium alloys — ICP-OES method using an internal
standard element
1 Scope
This	document	describes	an	analytical	procedure	for	the	determination	of	palladium	in	palladium	alloys
with	a	nominal	content	up	to	990	‰	(parts	per	thousand),	including	alloys	according	to	ISO	9202.	 Formatted:	Font:
Formatted:	Font:
2 Normative references
There	are	no	normative	references	in	this	document.
3 Terms and definitions
No	terms	and	definitions	are	listed	in	this	document.
ISO	and	IEC	maintain	terminological	databases	for	use	in	standardization	at	the	following	addresses:
—	 ISO	Online	browsing	platform:	available	at	https://www.iso.org/obp
Deleted: https://www.iso.org/ob
p
—	 IEC	Electropedia:	available	at	http://www.electropedia.org/
Deleted: http://www.electropedi
a.org/
4 Principle
At	least	two	accurately	weighed	samples	are	dissolved	in	aqua	regia	and	made	up	to	an	exactly	weighed
mass.	These	sample	solutions	are	mixed	with	the	internal	standard	and	made	up	to	the	standard
measuring	volume.
Using	ICP‐OES,	the	palladium	content	of	the	sample	solution	is	measured	by	comparison	of	the	ratio
intensities	of	the	spectral	emission	of	palladium	and	appropriate	internal	standard	(e.g.	yttrium)	line(s)
with	the	ratios	for	solutions	containing	known	masses	of	palladium	and	internal	standard	(e.g.	yttrium)
using	the	bracketing	method.
5 Reagents
During	the	analysis,	unless	otherwise	stated,	use	only	reagents	of	recognised	analytical	grade	and	only
distilled	water	or	water	of	equivalent	purity.
5.1 Hydrochloric acid	(HCl),	approximately	30	%	to	37	%	HCl	(mass	fraction).
5.2 Nitric acid	(HNO),	approximately	65	%	to	70	%	HNO	(mass	fraction).
3 3
5.3 Palladium	(Pd)	of	999,9	‰	minimum	purity;	if	a	lower	palladium	content	(e.g.	999,5	‰)	is	used,
appropriate	corrections	shall	be	applied.
5.4 Yttrium compound,	like	yttrium	chloride	(YCl·6HO	or	YO),	of	analytical	grade.
3 2 2 6
©	ISO	2019	–	All	rights	reserved
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6 Equipment
6.1 Customary laboratory apparatus.
6.2 ICP-OES,	capable	of	simultaneously	measuring	the	palladium	and	the	internal	standard	emission
lines	with	a	minimum	optical	resolution	of	0,02	nm.
6.3 Analytical balance,	with	a	reading	accuracy	of	0,01	mg.
7 Sampling
The	sampling	procedure	should	be	performed	in	accordance	with	ISO	11596.	 Formatted:	Font:
Formatted:	Font:
8 Procedure
WARNING	—Suitable	health	and	safety	procedures	should	be	followed.
8.1 Internal standard solution
Dissolve	approximately	20	mg	YCl·6HO	(5.4)	in	200	ml	water	and	make	up	to	1	000	ml	with	water.	 Formatted:	Font:
3 2
Alternatively,
 ...
NORME ISO
INTERNATIONALE 11495
Troisième édition
2019-07
Joaillerie, bijouterie et métaux
précieux — Dosage du palladium dans
les alliages de palladium — Méthode
par ICP-OES utilisant un étalon interne
Jewellery and precious metals — Determination of palladium in
palladium alloys — ICP-OES method using an internal standard
element
Numéro de référence
©
ISO 2019
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2019
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
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CH-1214 Vernier, Genève
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Publié en Suisse
ii © ISO 2019 – Tous droits réservés
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3	 Termes	et	définitions . 1
4 Principe . 1
5 Réactifs . 1
6 Matériel . 2
7 Échantillonnage . 2
8 Mode opératoire. 2
8.1 Solution d’étalon interne . 2
8.2 Solutions d’étalonnage . 2
8.3 Solutions échantillons . 2
8.4 Mesurages . 2
9 Calcul et expression des résultats . 3
9.1 Calcul . 3
9.2 Répétabilité . 4
10 Rapport d’essai . 5
Bibliographie . 6
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l'ISO participent également aux travaux.
L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www
.iso .org/directives).
L'attention est attirée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l'élaboration du document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de
brevets reçues par l'ISO (voir www .iso .org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion
de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles
techniques au commerce (OTC), voir www .iso .org/avant -propos.
Le présent document a été élaboré par le comité technique ISO/TC 174, Joaillerie, bijouterie et métaux
précieux.
Cette troisième édition annule et remplace la deuxième édition (ISO 11495:2014), qui a fait l’objet d’une
révision technique. Les principales modifications par rapport à l’édition précédente sont les suivantes:
a) la définition d’encadrement à l’Article 3 a été supprimée;
b) les raies recommandées à l’Article 4 ont été supprimées;
c) les réactifs à l’Article 5 ont été modifiés ou supprimés, et les exigences concernant l’yttrium en 5.4
ont été supprimées;
d) la préparation de la solution d’étalon interne en 8.1 a été modifiée;
e) la liste des étalons à préparer et les précisions sur leur qualification par linéarité ainsi que sur la
manière de choisir les étalons bas et haut en 8.2 ont été modifiées;
f) la méthode de préparation des aliquotes à la fois pour les solutions étalons et les solutions
échantillons en 8.2 et 8.3 a été supprimée;
g) la préparation des solutions étalons et des solutions échantillons en 8.2 et 8.3 a été modifiée;
h) la définition d’encadrement et les raies recommandées en 8.4 ont été ajoutées;
i) les formules en 9.1 ont été adaptées après avoir supprimé la méthode de préparation des aliquotes;
j) la raie d’émission a été supprimée des informations à mentionner dans le rapport d’essai à
l’Article 10;
iv © ISO 2019 – Tous droits réservés
k) une révision éditoriale du document a été effectuée.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes
se trouve à l’adresse www .iso .org/fr/members .html.
NORME INTERNATIONALE ISO 11495:2019(F)
Joaillerie, bijouterie et métaux précieux — Dosage du
palladium dans les alliages de palladium — Méthode par
ICP-OES utilisant un étalon interne
1 Domaine d’application
Le présent document décrit un mode opératoire analytique pour le dosage du palladium dans les
alliages de palladium, d’une teneur nominale allant jusqu’à 990 ‰ (millièmes), notamment pour les
alliages conformes à l’ISO 9202.
2 Références normatives
Le présent document ne contient aucune référence normative.
3	 Termes	et	définitions
Aucun terme n’est défini dans le présent document.
L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en
normalisation, consultables aux adresses suivantes:
— ISO Online browsing platform: disponible à l’adresse https: //www .iso .org/obp
— IEC Electropedia: disponible à l’adresse http: //www .electropedia .org/
4 Principe
Au moins deux échantillons pesés avec exactitude sont dissous dans de l’eau régale complétée ensuite
jusqu’à une masse pesée avec exactitude. Ces solutions échantillons sont mélangées avec l’étalon interne
et complétées au volume défini pour les solutions à mesurer.
À l’aide d’un spectromètre d’émission optiqu
 ...












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