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Is It True - Swiss 20 Francs 1935 LB Contain Mercury
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<p>[QUOTE="afantiques, post: 2060587, member: 71234"]The temperature of melted gold should be more than high enough to drive off any trace of mercury in vapour form. Mercury boils at 356C, gold melts at nearly three times that, just over 1000C. At three times its boiling point the vapour pressure of mercury would be very high indeed.</p><p><br /></p><p>When fire gilding bronze, quite a modest temperature is enough to drive off the mercury from the gold/mercury amalgam (I have used a simple gas blowtorch) leaving the gold on the bronze.</p><p><br /></p><p>This sounds like a myth, busted.</p><p><br /></p><p>Afterthought, any micro traces of mercury in gold could be a residue of the mining process, where mercury is used in gold extraction from ore.</p><p><br /></p><p>This is far more plausible than the suggestion of gold teeth. The latter sounds like anti Swiss propaganda and propaganda of all kinds can rely safely on the ignorance of the masses.[/QUOTE]</p><p><br /></p>
[QUOTE="afantiques, post: 2060587, member: 71234"]The temperature of melted gold should be more than high enough to drive off any trace of mercury in vapour form. Mercury boils at 356C, gold melts at nearly three times that, just over 1000C. At three times its boiling point the vapour pressure of mercury would be very high indeed. When fire gilding bronze, quite a modest temperature is enough to drive off the mercury from the gold/mercury amalgam (I have used a simple gas blowtorch) leaving the gold on the bronze. This sounds like a myth, busted. Afterthought, any micro traces of mercury in gold could be a residue of the mining process, where mercury is used in gold extraction from ore. This is far more plausible than the suggestion of gold teeth. The latter sounds like anti Swiss propaganda and propaganda of all kinds can rely safely on the ignorance of the masses.[/QUOTE]
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