sol wrote: > I am a bit confused by terminology in this thread. Aren't silver nitrate > or silver citrate and silver chloride properly called silver compounds > rather than silver ions?
They are silver compounds when dry. When dissolved in water the cation and anion disassociate and form a silver cation and a anion of nitrate, citrate and so forth. Ionic silver is thus any compound of silver that is dissolved in water and disassociated. The ionic silver made by a typical EIS setup is the compound of silver hydroxide dissolved in water. > Somehow (no chemist, me) I had the idea that a > silver ion was one silver atom with an electon missing and could not be > anything else but a silver ion, That is correct, The silver cation of any compound dissolved in water is a silver ion. > with no other atoms or ions attached to it? That is correct. If the silver atom is attached to another atom then it will be a compound, and in the case of silver will be a solid. When these compounds dissolve in water they disassociate, so that the silver cation is floating around with a postitive charge and the anion is floating around with a negative charge in the liquid so that the liquid is neutral. > Someone please help me out here. I'm trying to follow this thread as > it is very interesting, but obviously my definitions of ions and > compounds must not be right. Any IONIC compound that disassociates in water will form ions, for instance salt will form sodium cations and chloride anions when it dissolves in water. This is extremely easy to prove with a conductance meter, since ions are what causes conductivity in water. If you add silver nitrate or silver citrate to water the conductance will go way up due to the ions they introduce when dissolved. For some additional information on this see: http://www.chemistry.ohio-state.edu/~grandinetti/teaching/Chem121/lectures/Solution%20Chemistry/SolutionChemistry.html http://intro.chem.okstate.edu/1215/Lecture/Chapter7/Lecture92898.html http://www.chemistry.mtu.edu/pages/courses/ch1000-rluck/ch7.pdf Marshall > > TIA, > sol > > Marshall Dudley wrote: > > >The statements are fact as far as I can tell. Ionic silver such as silver > >nitrate or silver citrate in concentrations over 100 ppm can certainly cause > >argyria, preperations at 20 ppm of silver hydroxide and less in the form of > >EIS > >appear to not. But is it because of the lower concentration, or because EIS > >contains particles for the ionic silver to plate out on? I think it is the > >latter choice primarily because I believe that only an ounce or so of 100+ > >ppm > >of silver citrate a day can cause argyria, yet a quart or more of 10 to 20 > >ppm > >EIS will not. The amount of ionic silver in the quart of EIS is actually > >several times as much as the silver in the ounce of 100 ppm silver citrate, > >yet > >does not cause argyria. I would be willing to bet that if you were to mix > >WaterOz with Meso Silver, even if the amount of Meso Silver is only 5% of the > >amount in the WaterOz, it would not cause argyria either. > > > >Marshall > > > > > > > > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.308 / Virus Database: 266.8.1 - Release Date: 3/23/2005 > > -- > The Silver List is a moderated forum for discussing Colloidal Silver. > > Instructions for unsubscribing are posted at: http://silverlist.org > > To post, address your message to: [email protected] > Silver List archive: http://escribe.com/health/thesilverlist/index.html > > Address Off-Topic messages to: [email protected] > OT Archive: http://escribe.com/health/silverofftopiclist/index.html > > List maintainer: Mike Devour <[email protected]>
