The stability of gold solutions.
The stability of gold solutions was studied over the concentration range of 0.41-258 ppm at acidities ranging from 6M hydrochloric acid to pH 1, the solutions being stored in glass-stoppered borosilicate bottles. The best conditions were found to be 12-258 ppm solutions at pH 0-2, for which the loss of gold was 4% or less over a period of 400 days.
Chow
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Department of Chemistry University of Manitoba Winnipeg 19, Canada.