Hello, Members of the LIst! The new book on CS by Warren Jefferson, Colloidal Silver Today, noted the appearance of microbial resistance to silver, though it is not clear whether it is to silver in its colloidal form.
Jefferson mentions that bacterial colonies have been found growing in silver mines. A Swedish research team found this strain was able was able to store (metallic?) silver in an outer wall of its cell structure. Jefferson also mentions three cases in a burn ward of a Massachusetts hospital of a Salmomella strain that was resistant to Ag+. The Silver List has devoted attention to colloids other than silver. These include gold, copper,zinc and some others. I would like to make note of an article in the October 2003 edition of Scientific American on a new break-through in the processing of titanium. Professor Chen of Cambridge University in England has discovered a way to reduce titanium oxide to pure metallic titanium by electrolysis. Until now, the reduction had to be Kroll's chemical method, which is difficult and expensive. The price of pure metallic titanium is expected to drop drastically soon. Commercial production of titanium began in the 1920s. Perhaps colloidal titanium was in the pre-1938 pharmacopeia. Can anybody tell me whether it was? Thanks in advance for any help in answering this question! Best regards, Matthew