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<p>[QUOTE=&quot;desertgem, post: 2124107, member: 15199&quot;]The energetics for the reactions usually involve silver nitrate ( formed using nitric acid) . Silver oxides formation usually involve hydroxides not usually even a minor component in the air moisture or ground water. Similar products that could contain silver, I can&#039;t visualize being a factor in toning due to the chemistry, unless a DuPont warehouse exploded in a thunderstorm. Silver compounds usually aren&#039;t very soluble in water with a normal pH. Silver-organic compounds are more soluble in water,and thus body fluids/tissue, such as bandages, antiseptic for strep throat before antibiotics. I think that sulfides or other sulfur compounds would account for almost all silver toning.[/QUOTE]</p><p><br /></p>

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