NF EN ISO 11210
Jewellery - Determination of platinum in platinum jewellery alloys - Gravimetric method after precipitation of diammonium hexachloroplatinate
ISO 11210:2014 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 can 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.
ISO 11210:2014 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 can 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.
<p>ISO 11210:2014 specifies a gravimetric method for the determination of platinum in platinum jewellery alloys, preferably within the range of fineness stated in ISO 9202.</p> <p>These alloys can 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.</p>
<p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This document specifies a gravimetric method for the determination of platinum on a material considered homogeneous. The platinum content of the sample lies preferably between 50 and 999 parts per thousand (‰) by mass. Fineness above 999 ‰ can be determined using a spectroscopy method by difference (e.g. <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">15093</span></span></span>).</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This method is also intended to be used as one of the recommended methods for the determination of fineness in jewellery alloys covered by <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">9202</span></span></span>.</span></p>
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1 Domaine d'application
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2 Références normatives
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3 Principe
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4 Réactifs
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5 Appareillage
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6 Échantillonnage
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7 Mode opératoire
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8 Modes de calcul et expression des résultats
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9 Rapport d'essai
- Annexe A Dispositif de réduction conformément à Rose
- Bibliographie
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