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.
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