SIST EN ISO 11210:1998

Determination of platinum in platinum jewellery alloys - Gravimetric method after precipitation of diammonium hexachloroplatinate (ISO 11210:1995)

Specifies a gravimetric method for the determination of platinum in platinum jewellery alloys, preferably within the range of fineness stated in ISO 9202. These alloys may contain palladium, iridium, rhodium, copper, cobalt, gold, ruthenium, gallium, chromium, indium and less than 5 % tungsten. Some modifications are indicated where palladium, iridium, rhodium, gold or ruthenium are present.

Bestimmung von Platin in Platin-Schmucklegierungen - Gravimetrische Bestimmung nach Fällung als Diammoniumhexachloroplatinat (ISO 11210:1995)

Diese Normmethode beschreibt ein gravimetrisches Verfahren für die Bestimmung von Palladium in Palladium-Schmucklegierugen, die vorzugsweise im Bereich der inISO 9202 festgelegten Feingehalte liegen und die Silber, Indium, Gallium, Kupfer, Kobalt, Nickel, Zinn und Ruthenium enthalten können. Mitgefällte Elemente sind mit einer geeigneten Methode zu bestimmen und durch eine Korrekturzu berücksichtingen.

Dosage du platine dans les alliages de platine pour la bijouterie-joaillerie - Méthode gravimétrique apres précipitation de l'hexachloroplatinate de diammonium (ISO 11210:1995)

La présente Norme internationale prescrit une méthode gravimétrique de dosage du platine dans les alliages de platine utilisés en bijouterie-joaillerie, de titres compris, de préférence, dans les limites indiquées dans l'ISO 9202. Ces alliages peuvent contenir du palladium, de l'iridium, de l'or, du rhodium, du cuivre, du cobalt, du ruthénium, du gallium, du chrome, de l'indium et moins de 5 % de tungstène. Des modifications sont indiquées en cas de présence de palladium, d'or, de ruthénium, d'iridium ou de rhodium.

Določevanje platine v zlitinah za nakit iz platine - Gravimetrična metoda po obarjanju diamonijevega heksakloroplatinata (ISO 11210:1995)

General Information

• Status: Withdrawn
• Publication Date: 31-Mar-1998
• Withdrawal Date: 19-Oct-2016
• ICS: 39.060 - Jewellery
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 20-Oct-2016
• Due Date: 12-Nov-2016
• Completion Date: 20-Oct-2016
• Ref Project: EN ISO 11210:1995 - Determination of platinum in platinum jewellery alloys - Gravimetric method after precipitation of diammonium hexachloroplatinate (ISO 11210:1995)

Relations

• Replaced By: SIST EN ISO 11210:2016 - Jewellery - Determination of platinum in platinum jewellery alloys - Gravimetric method after precipitation of diammonium hexachloroplatinate (ISO 11210:2014)
• Effective Date: 19-Oct-2016
• Revised: SIST EN ISO 11210:2016 - Jewellery - Determination of platinum in platinum jewellery alloys - Gravimetric method after precipitation of diammonium hexachloroplatinate (ISO 11210:2014)
• Effective Date: 01-Jun-2016

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bestimmung von Platin in Platin-Schmucklegierungen - Gravimetrische Bestimmung nach Fällung als Diammoniumhexachloroplatinat (ISO 11210:1995)Dosage du platine dans les alliages de platine pour la bijouterie-joaillerie - Méthode gravimétrique apres précipitation de l'hexachloroplatinate de diammonium (ISO 11210:1995)Determination of platinum in platinum jewellery alloys - Gravimetric method after precipitation of diammonium hexachloroplatinate (ISO 11210:1995)39.060NakitJewelleryICS:Ta slovenski standard je istoveten z:EN ISO 11210:1995SIST EN ISO 11210:1998en01-april-1998SIST EN ISO 11210:1998SLOVENSKI
STANDARD



SIST EN ISO 11210:1998



SIST EN ISO 11210:1998



SIST EN ISO 11210:1998



SIST EN ISO 11210:1998



SIST EN ISO 11210:1998



INTERNATIONAL STANDARD ISO 11210 First edition 1995-05-01 Determination of platinum in platinum jewellery alloys - Gravimetric method after precipitation of diammonium hexachloroplatinate Dosage du Platine dans /es alliages de Platine pour Ia bijouterie - Joaillerie - M6 thode gravim6 trique apr& prkipita tion de I’hexachloropla tina te de diammonium Reference number ISO 11210:1995(E) SIST EN ISO 11210:1998



ISO %12%0:1995(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodiesj. The work of preparing International Standards is normally carried out through ISO technical committees. Esch 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. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 11210 was prepared by Technical Committee lSO/TC 174, JeweIlery. Annex A of this International Standard is for information only. 0 ISO 1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, rncluding phorocopylng and mIcrofiIm, wlthouY permIssIon in wnting from the publisher. Internationa l Organization Case PostaO e 56 l CH-121 fo r Standa rdization Geneve 20 l Switzerland Printed in Switzerland ii SIST EN ISO 11210:1998



INTERNATIONAL STANDARD 0 ISO ISO 11210:1995(E) Determination of platinum in platinum jewellery alloys - Gravimetric method after precipitation of diammonium hexachloroplatinate 1 Scope This International Standard specifies a gravimetric method for the determination of platinum in platinum jewellery alloys, preferably within the range of fineness stated in ISO 9202. These alloys may contain Palladium, iridium, rhodium, topper, Cobalt, gold, ruthenium, gallium, chromium, indium and less than 5 % tungsten. Some modifica- tions are indicated where Palladium, iridium, rhodium, gold or ruthenium are present. 2 Normative reference The following Standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the edition indicated was valid. All Standards are subject to revision, and Parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent edition of the Standard indicated below. Mem- bers of IEC and ISO maintain registers of currently valid International Standards. ISO 9202:1991, Jewellery - Fineness of precious metal alloys. 3 Principle The Sample is dissolved in aqua regia. After convert- ing the Sample Solution to a slightly acid medium, the platinum is precipitated as diammonium hexachloro- platinate. The precipitate is converted to metallic platinum. Coprecipitated alloying elements are tested for in the redissolved platinum sponge and measured by, for example, atomic absorption and inductively coupled Plasma (ICP) emission spectrometry, and a correction applied. 4 Reagents During the analysis, unless otherwise stated, use only reagents of recognized analytical grade and only dis- tilled water or water of equivalent purity. 4.1 Hydrochlorit acid, 36 % (m/m) to 38 % (m/m), #Y p20 = 1,19 g/cm’. 4.2 Dilute hydrochloric acid, p20 = 1,09 g/cm3. 4.3 Nitrit acid, 69 % (m/m), p20 = 1,41 4.4 Ammonium chloride Solution ( saturated Solution. 4.5 Reducing gas, such as hydr hydrogenlnitrogen mixture. 18 % (dm), g/cm3. N H,CI), cold ogen or a 4.6 Inert gas, such as carbon dioxide or nitrogen. 4.7 Aqua regia. Mix 3 volumes of hydrochloric acid (4.1) and 1 volume of nitric acid (4.3). WARNING - Aqua regia is potentially hazardous and safety glasses or goggles must be used. Dis- Solution should be carried out in a weil-ventilated fume cupboard. 5 Apparatus Ordinary laboratory apparatus and SIST EN ISO 11210:1998



ISO 11210:1995(E) 0 ISO 51 . Reduction apparatus, see figure A. 1 in Immediately filter the (NH,),PtCle precipitate over a filter Paper (5.4) which has been moistened with am- monium chloride Solution (4.4). Thoroughly wash the precipitate with ammonium chloride Solution. Wipe the glass beaker and watch glass with a second filter Paper. Check the filtrate for residual platinum by suit- able means, such as an atomic absorption or ICP emission spectrometer (5.2) after decomposition of the residual ammonium chloride, and correct the final result accordingly. annex A. 5.2 Atomic absorption or inductively coupled Plasma (KP) emission spectrometer, capable of determining traces of metals. 5.3 Muffle furnace, capable of attaining at least 1 000 “C. 5.4 Ashless filter Paper, capable of retaining 3 prn particles. NOTE 1 The ammonium chloride decomposes at 340 “C. 6 Sampling The sampling procedure f
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