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- W87365689 abstract "The carbon and oxygen contents in several types of hard electroplated gold and one type of soft gold plate have been determined by helium-3 activation analysis. The results for carbon are in the same range as those obtained from combustion analyses on similar samples. The carbon-to-oxygen ratio was found to vary from 2.5 to about 4 for hard gold plates. The maximum bulk level of carbon and oxygen in a soft gold electroplate was found to be about 10-2 atom- %. The technique requires no chemical separations and can easily detect impurities at the p.p.m. level. L'analyse par activation à l'hélium-3 a permis de doser le carbone et l'oxygène dans plusieurs types d'ors durs électroplaqués et dans un type de dépôt d'or mou. Les résultats obtenus pour le carbone sont dans le même ordre de grandeur que ceux obtenus par combustion d'échantillons similaires. Le rapport carbone/oxygène varie de 2.5 à 4 pour les dépôts d'or dur. Cette technique ne nécessite pas de séparations chimiques. Des impuretés, en quantité de l'ordre du p.p.m., peuvent facilement être décelées. Die Kohlenstoff- und Sauerstoffgehalte in verschiedenen Sorten galvanisch hergestellter Hartgoldplattierung und in einer Sorte Weichgoldplattierung wurden durch Helium-3-Aktivierungsanalyse bestimmt. Die Kohlenstoffwerte liegen im selben Bereich wie die durch Verbrennungsanalysen mit ähnlichen Proben erhaltenen Ergebnisse. Das Verhältnis von Kohlenstoff zu Sauerstoff variierte bei Hartgold-überzügen zwischen 2.5 und 4. Der maximale Gesamtgehalt von Kohlenstoff und Sauerstoff in einer Weichgoldplattierung betrug etwa l0-2 Atom- %. Das Verfahren erfordert keine chemischen Abtrennungen und erlaubt den Nachweis von Verunreinigungen im p.p.m.-Bereich." @default.
- W87365689 created "2016-06-24" @default.
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- W87365689 date "1971-10-01" @default.
- W87365689 modified "2023-10-17" @default.
- W87365689 title "The simultaneous determination of carbon and oxygen in electroplated gold by helium-3 activation" @default.
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- W87365689 doi "https://doi.org/10.1016/s0003-2670(01)80921-1" @default.
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