The mechanism for the darkening of tissue by silver is as follows:

Silver chloride is photo-reduced by UV light to metallic silver and is
then reoxidised to black silver sulphide and bound to the tissue. If a
high concentration of selenium is present the silver sulphide will be
converted to silver selenide, which may result in higher deposition
than with silver sulphide. (1)

 ATSDR (1990) reports that the deposition of silver in tissues is the
result of the precipitation of insoluble silver salts, such as silver
chloride and silver phosphate.  These insoluble silver salts are then
transformed into soluble silver sulfide albuminates, to bind or to
form complexes with amino or carboxyl groups in RNA, DNA, and
proteins, or to be reduced by ascorbic acid or catechol-amines.  The
skin discoloration of humans with argyria may be caused by a
photo-reduc-tion of silver chloride to metallic silver.  The metallic
silver is then oxidized by tissue, sub-sequently forming black silver
sulfide. (2)

Colloidal silver is in fact oxidised and therefore an oxidising agent
which partly explains its biological action.

I am coming to the opinion that as silver must be ionic in form to be
biologically active, the only value in CS over soluble silver salts is
that one does not need to ingest the anion part (negative part of a
silver salt, eg NO3-) which may be toxic. As it is likely that the
silver ion will form a bond with the first available anion (Cl- ?),
and does so in the stomach or blood, it is just as well that the
Chloride anion is readily exchanged for  Sulphide etc. and so the
silver is able to perform its actions in bonding to and disrupting
cell walls, and so on.
Metallic silver, which is not readily dissolved by HCl, but will
release some ions over time, is unlikely to be absorbed by the stomach
but may be absorbed in the small intestine. It is mildly antiseptic
and will find its way to the liver just as any reduced silver not
bound in the tissue will.
It is the ionic silver which will find itself attached to body tissue
and it may be wise to take small doses through out the day rather than
large single doses to limit this occurrence.

Thoughts any one?

Ivan.
----- Original Message -----
From: Marshall Dudley <mdud...@execonn.com>
To: <silver-list@eskimo.com>
Sent: Thursday, 2 December 1999 05:18
Subject: Re: CS>alittle gray


> Normally graying is caused by silver compounds.  The process is
exactly the same
> as photo developing.  When light strikes a silver compound it
disassociates,
> producing a small particle of silver metal.  This particle will be
produced
> where light can reach the compound, ie. the skin.  Then if
additional silver
> compounds are present, and the ph of the blood is correct and there
is a
> developer present, additional silver will dissociate at the sites
where a silver
> atom is present, causing the atom to grow into a clump.
>
> Many compounds are developers, such as caffine and tannin, both of
which are in
> tea. http://www.rit.edu/~andpph/text-coffee.html
>
> Since colloidal silver is already reduced, this should never happen
with pure
> colloidal silver.  If indeed this is what is happening then it
sounds like you
> are getting some silver compounds in your colloid.  Are you using
pure distilled
> water without adding any salt or anything?  If you have a TDS meter,
check the
> distilled water for purity, they may be putting in filtered
municipal water.  If
> you don't have a TDS meter, boil down 8 oz of supposedly distilled
water in a
> clean pyrex container, and see if you get any residue left.
>
> Marshall
>
> donna2...@aol.com wrote:
>
> > James,
> >   Could this gray be a build of of silver in my blood maybe?  I am
really
> > reaching for straws here.  If it is from the CS then everytime I
go into the
> > sun it will get darker......is this what you are saying?
> >
> > Donna Earnest
> >
> > --
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>
>