Hello, Terry, Are you saying that argyria is caused by the large particles? Dissolved silver salts such as silver nitrate and silver citrate can and do result in argyria, even though there are no elemental silver particulates in the solution. The Ag+ ions are as small as particles of silver ever get, but they cause argyria if enough are consumed though the dissolved salt may be colorless.
Raw, infected water can be sanitized by electrolyzing silver in it, but this occurs at ppb levels, not ppm levels. So the risk of argyria is nil. Best regards, Matthew
