Mike Monett wrote:

> CS>FerroFluids
> From: Matthew McCann
> Date: Sun, 14 Nov 2004 05:46:47
>
>   Hello Matthew,
>
>   > Hello, Mike,
>
>   > Your definition  of oligodynamism is not what others  mean  by the
>   > word. It's etymology (activity by the few) is close to what Nageli
>   > meant. It means increased potency upon dilution. The oligodynamism
>   > of colloidal  silver was discovered years before it was  tested on
>   > humans.
>
>   I use  the definition found in the British  Columbia  "Ambient Water
>   Quality Criteria for Silver", by P. D. Warrington, PhD.
>
>     "Application of Criteria for Aquatic Life"
>
>     "Silver is  a  disinfectant   for  non-spore  forming  bacteria at
>     concentrations about 1000 times lower than the levels at  which it
>     is toxic  to mammalian life.  This  extreme mammalian-to-bacterial
>     toxicity differential  is   the   definition   of  an oligodynamic
>     material."
>
>     [...]
>
>     "The biological effects of silver are apparently due to reversible
>     bonds with  enzymes and other active molecules on  the  surface of
>     cells.    Due    to     its     sulphydryl    binding  propensity,
>     biologically-available    silver   disrupts   membranes,  disables
>     proteins and inhibits enzymes."
>
>     "The ionic form of silver is necessary for biological activity and
>     the lipid  phase  of  the  membrane  appears  to  be  important in
>     adsorbing silver ions to living cells. The active sites on enzymes
>     which are  affected  by silver  are  apparently  the electron-rich
>     functional groups such as-SH groups."
>
>    http://wlapwww.gov.bc.ca/wat/wq/BCguidelines/silver/bcsilver-04.htm
>
>   > Dozens of investigators have reported that silver particulates are
>   > in colloidal silver. See text by Searle, and the vast bibliography
>   > in Hill and Pillsbury. Experimental verification by powder-pattern
>   > x-ray crystallography might be the most compelling evidence to me,
>   > though.
>
>   Your statements might be more interesting and useful if you provided
>   some links. Sure, there is plenty of silver in silver oxides. But if
>   the solutions were prepared using electrolysis, the particles cannot
>   be silver metal. Many people wish and hope they are, but they cannot
>   show any  equations to prove it. They certainly did not  know  of my
>   work prior  to  publication,  and  experimental  results  are always
>   subject to error and misinterpretation.

Equations prove nothing, experimental evidence and measurements prove
things.  Experiments and measurements prove that there are silver particles
in EIS, if one produces equations that disagree with the experimental
eveidence, then the equations must be wrong, not the evidence. That is how
science is done. I have proven it several times with spectroscopy, and
there are others who have proven it as well.  Silver oxide under no
condition causes water it is dissolved in, or suspended in, to be yellow,
only metallic silver particles will give a yellow or golden color to the
water.

You want equations, then fine, I can give you some:

Ag - -e -> Ag+

This equation shows that the anode will produce silver ions.  At the other
elecrtrode you get Ag + -e -> OH-.  That OH- ion is necessary to balance
the Ag+ ion and keep the solution neutral.

Once the ionic portion exceeds a certain ppm depending on imputities in the
water and the temperature and the ionic gradient, browning motion is
sufficient for two Ag+OH- ion pairs to come together, they fuse.  The
equation for that is:

2Ag+ + 2OH- = 2Ag + H2O + H2

The 2Ag is the particulate portion.  Now due to the lower amount of charge
on this particle and it's greater size, the probablility of an ion of
silver colliding with it is greater than two silver ions colliding, so
these particles tend to grow althrough the amount of ions is much higher.
The result is a combination of silver ions (actually silver hydroxide), and
silver particles.

There is no oxygen even available to form silver oxide, and it certainly
cannot form at the anode where electrochemistry shows that the electrolysis
will pull oxygen from silver oxide, not produce it.  However, since it is
known that silver hydroxide is somewhat unstable and will spontaneously
reduce to silver oxide, perhaps some of the ionic portion is silver oxide.
That at least makes sense, whereas the non dissolving particulate silver
portion being soluble silver oxide makes no sense at all.

Marshall



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