Oops! I am afraid I misled you folk as to the measurement of silver by Atomic Absorption Spectrophotometry. Bob was right in the first instance in that particles less than about 5 microns do not need acid digestion in order to vaporise in the machines flame, and so AAS will measure TOTAL content of CS.
Here is the heads up I received from Frank Key: AA does not require that the silver > particles be digested > with acid if the particles are below about 3-5 microns. No > particles of that > size would stay suspended. The flame will vaporize the > particles and provide > accurate AA results. This is explained in the paper on > silver-colloids.com > titled "Determining Properties of Colloidal Silver". > > A spectrophotometer requires that the particles be digested. > If no digestion, > then only the ions will measured. AA measures total silver > (particles + ions) > without digestion. Regards Ivan. -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
