I assume Peter's talking about an instrument that measures absorption/transmission through the liquid, Ken! Atomic absorption spectrophotometry is another animal alltogether.
Peter, did you run a control sample of plain distilled water with which to compare? A quick visual scan of your data suggests a basically smooth, gradual rise in transmissivity with increasing wavelength. The data points are so sparse there's no chance to discern any fine structure. I think there was some more informative work done using a scanning UV/visible/IR spectrophotometer, but I don't remember by whom. With a continuously variable wavelength light source, one could expect to see an actual resonant peak (or trough) where the particle size distribution would interact with the wavelength of the light. A sufficiently small particle size would interact in the ultraviolet, I believe. I don't know what, if anything, you could see of the ionic component of your preparation. I hope others remember more about this than I do and can dredge up some references and/or archived messages on the topic. Be well, Mike D. > Since a [AA} spectrophotometer essentially vaporizes a sample into a > plasma, why would particle size be any part of that? > > ode > > > > At 04:03 PM 7/28/2008 +1000, you wrote: > > >Dear csers, > > > >I recently had the opportunity to play with a spectrophotometer.Using > >the instruction book procedures gave the following readings: > > > >I took readings at wavelengths for > >blue(470nm),green(555nm),yellow(585nm),orange(610nm) and red(650nm).The > > results indicated a figure for Absorption(A) and Transmission(T) %. > > > >Blue;A=0.143 T=71.8 > > > >,Green;A=0.136 T=73.2 > > > > Yellow;A=0.118 T=75.9 > > > > Orange;A=0.115 T=76.8 > > > > Red;A=0.093 T=80.7 > > > >My question for those familiar with this apparatus is; > > > >What particle size could be ascertained from these results? > > > >My cs production method uses 27v and halts at 8mA using spiral shaped > >electrodes spaced 25mm apart.Results are a clear solution (no colour) > >but a slight tyndall effect observable via high power(1w) leds > > > >Thank you for taking time to reply. > > > >pete > > > > > > > > > > > > > >********************************************************************** > >This message is intended for the addressee named and may contain > >privileged information or confidential information or both. If you are > >not the intended recipient please delete it and notify the sender. > >********************************************************************** > > > >No virus found in this incoming message. > >Checked by AVG - http://www.avg.com > >Version: 8.0.138 / Virus Database: 270.5.6/1576 - Release Date: > >7/27/2008 4:16 PM > > > -- > 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] > > Address Off-Topic messages to: [email protected] > > The Silver List and Off Topic List archives are currently down... > > List maintainer: Mike Devour <[email protected]> > > [Mike Devour, Citizen, Patriot, Libertarian] [[email protected] ] [Speaking only for myself... ]
